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Check Engine light: loose gas cap LOL!
I can't beleive it, I was getting intermittent Check Engine lights on my '91'
XJ. After reading this newsgroup I tried cranking down my gas cap a little more and now no more Check Engine light. The thing I'm wondering is why does the emissions system care if my gas cap isn't completely tight? Is the fuel tank pressurized or something? -Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Fumes from the gasoline evaperating in the tank.
JoBo "Wblane" <wblane@aol.combotizer> wrote in message news:20040705010035.19192.00001177@mb-m06.aol.com... > I can't beleive it, I was getting intermittent Check Engine lights on my '91' > XJ. After reading this newsgroup I tried cranking down my gas cap a little more > and now no more Check Engine light. The thing I'm wondering is why does the > emissions system care if my gas cap isn't > completely tight? Is the fuel tank pressurized or something? > -Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Fumes from the gasoline evaperating in the tank.
JoBo "Wblane" <wblane@aol.combotizer> wrote in message news:20040705010035.19192.00001177@mb-m06.aol.com... > I can't beleive it, I was getting intermittent Check Engine lights on my '91' > XJ. After reading this newsgroup I tried cranking down my gas cap a little more > and now no more Check Engine light. The thing I'm wondering is why does the > emissions system care if my gas cap isn't > completely tight? Is the fuel tank pressurized or something? > -Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Fumes from the gasoline evaperating in the tank.
JoBo "Wblane" <wblane@aol.combotizer> wrote in message news:20040705010035.19192.00001177@mb-m06.aol.com... > I can't beleive it, I was getting intermittent Check Engine lights on my '91' > XJ. After reading this newsgroup I tried cranking down my gas cap a little more > and now no more Check Engine light. The thing I'm wondering is why does the > emissions system care if my gas cap isn't > completely tight? Is the fuel tank pressurized or something? > -Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Fumes from the gasoline evaperating in the tank.
JoBo "Wblane" <wblane@aol.combotizer> wrote in message news:20040705010035.19192.00001177@mb-m06.aol.com... > I can't beleive it, I was getting intermittent Check Engine lights on my '91' > XJ. After reading this newsgroup I tried cranking down my gas cap a little more > and now no more Check Engine light. The thing I'm wondering is why does the > emissions system care if my gas cap isn't > completely tight? Is the fuel tank pressurized or something? > -Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
On 05 Jul 2004 05:00:35 GMT, wblane@aol.combotizer (Wblane) wrote:
>I can't beleive it, I was getting intermittent Check Engine lights on my '91' >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >and now no more Check Engine light. The thing I'm wondering is why does the >emissions system care if my gas cap isn't >completely tight? Is the fuel tank pressurized or something? Yes. There is a pressure sensor in the fuel line to the charcoal cannister. If the vapor pressure is too low it will trigger the check engine light. All modern cars and trucks have sealed gas caps, and have for many years now. Always check the cap first thing if you get a light and have no code reader handy. It's a relatively common problem. You may need a new cap assembly if this reoccurs. John Davies http://home.comcast.net/~johnedavies/ '96 Lexus LX450 '00 Audi A4 1.8T quattro Spokane WA USA |
Re: Check Engine light: loose gas cap LOL!
On 05 Jul 2004 05:00:35 GMT, wblane@aol.combotizer (Wblane) wrote:
>I can't beleive it, I was getting intermittent Check Engine lights on my '91' >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >and now no more Check Engine light. The thing I'm wondering is why does the >emissions system care if my gas cap isn't >completely tight? Is the fuel tank pressurized or something? Yes. There is a pressure sensor in the fuel line to the charcoal cannister. If the vapor pressure is too low it will trigger the check engine light. All modern cars and trucks have sealed gas caps, and have for many years now. Always check the cap first thing if you get a light and have no code reader handy. It's a relatively common problem. You may need a new cap assembly if this reoccurs. John Davies http://home.comcast.net/~johnedavies/ '96 Lexus LX450 '00 Audi A4 1.8T quattro Spokane WA USA |
Re: Check Engine light: loose gas cap LOL!
On 05 Jul 2004 05:00:35 GMT, wblane@aol.combotizer (Wblane) wrote:
>I can't beleive it, I was getting intermittent Check Engine lights on my '91' >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >and now no more Check Engine light. The thing I'm wondering is why does the >emissions system care if my gas cap isn't >completely tight? Is the fuel tank pressurized or something? Yes. There is a pressure sensor in the fuel line to the charcoal cannister. If the vapor pressure is too low it will trigger the check engine light. All modern cars and trucks have sealed gas caps, and have for many years now. Always check the cap first thing if you get a light and have no code reader handy. It's a relatively common problem. You may need a new cap assembly if this reoccurs. John Davies http://home.comcast.net/~johnedavies/ '96 Lexus LX450 '00 Audi A4 1.8T quattro Spokane WA USA |
Re: Check Engine light: loose gas cap LOL!
On 05 Jul 2004 05:00:35 GMT, wblane@aol.combotizer (Wblane) wrote:
>I can't beleive it, I was getting intermittent Check Engine lights on my '91' >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >and now no more Check Engine light. The thing I'm wondering is why does the >emissions system care if my gas cap isn't >completely tight? Is the fuel tank pressurized or something? Yes. There is a pressure sensor in the fuel line to the charcoal cannister. If the vapor pressure is too low it will trigger the check engine light. All modern cars and trucks have sealed gas caps, and have for many years now. Always check the cap first thing if you get a light and have no code reader handy. It's a relatively common problem. You may need a new cap assembly if this reoccurs. John Davies http://home.comcast.net/~johnedavies/ '96 Lexus LX450 '00 Audi A4 1.8T quattro Spokane WA USA |
Re: Check Engine light: loose gas cap LOL!
Better keep looking for the cause of that Check Engine light. A 1991 XJ
couldn't care less if you took the gas cap off and threw it away. Jeep didn't start monitoring the evap system until 1996, when OBD II was implemented. In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: >I can't beleive it, I was getting intermittent Check Engine lights on my '91' >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >and now no more Check Engine light. The thing I'm wondering is why does the >emissions system care if my gas cap isn't >completely tight? Is the fuel tank pressurized or something? >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Better keep looking for the cause of that Check Engine light. A 1991 XJ
couldn't care less if you took the gas cap off and threw it away. Jeep didn't start monitoring the evap system until 1996, when OBD II was implemented. In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: >I can't beleive it, I was getting intermittent Check Engine lights on my '91' >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >and now no more Check Engine light. The thing I'm wondering is why does the >emissions system care if my gas cap isn't >completely tight? Is the fuel tank pressurized or something? >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Better keep looking for the cause of that Check Engine light. A 1991 XJ
couldn't care less if you took the gas cap off and threw it away. Jeep didn't start monitoring the evap system until 1996, when OBD II was implemented. In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: >I can't beleive it, I was getting intermittent Check Engine lights on my '91' >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >and now no more Check Engine light. The thing I'm wondering is why does the >emissions system care if my gas cap isn't >completely tight? Is the fuel tank pressurized or something? >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Better keep looking for the cause of that Check Engine light. A 1991 XJ
couldn't care less if you took the gas cap off and threw it away. Jeep didn't start monitoring the evap system until 1996, when OBD II was implemented. In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: >I can't beleive it, I was getting intermittent Check Engine lights on my '91' >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >and now no more Check Engine light. The thing I'm wondering is why does the >emissions system care if my gas cap isn't >completely tight? Is the fuel tank pressurized or something? >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
In message <7lsie09auilsaat4u1sfqktjj3rcq6er29@4ax.com>, "John Davies" wrote:
>On 05 Jul 2004 05:00:35 GMT, wblane@aol.combotizer (Wblane) wrote: > >>I can't beleive it, I was getting intermittent Check Engine lights on my '91' >>XJ. After reading this newsgroup I tried cranking down my gas cap a little more >>and now no more Check Engine light. The thing I'm wondering is why does the >>emissions system care if my gas cap isn't >>completely tight? Is the fuel tank pressurized or something? > >Yes. There is a pressure sensor in the fuel line to the charcoal >cannister. LOL I suppose you've seen this sensor, eh? >If the vapor pressure is too low it will trigger the check >engine light. All modern cars and trucks have sealed gas caps, and >have for many years now. > >Always check the cap first thing if you get a light and have no code >reader handy. It's a relatively common problem. > >You may need a new cap assembly if this reoccurs. > > > >John Davies >http://home.comcast.net/~johnedavies/ >'96 Lexus LX450 >'00 Audi A4 1.8T quattro >Spokane WA USA |
Re: Check Engine light: loose gas cap LOL!
In message <7lsie09auilsaat4u1sfqktjj3rcq6er29@4ax.com>, "John Davies" wrote:
>On 05 Jul 2004 05:00:35 GMT, wblane@aol.combotizer (Wblane) wrote: > >>I can't beleive it, I was getting intermittent Check Engine lights on my '91' >>XJ. After reading this newsgroup I tried cranking down my gas cap a little more >>and now no more Check Engine light. The thing I'm wondering is why does the >>emissions system care if my gas cap isn't >>completely tight? Is the fuel tank pressurized or something? > >Yes. There is a pressure sensor in the fuel line to the charcoal >cannister. LOL I suppose you've seen this sensor, eh? >If the vapor pressure is too low it will trigger the check >engine light. All modern cars and trucks have sealed gas caps, and >have for many years now. > >Always check the cap first thing if you get a light and have no code >reader handy. It's a relatively common problem. > >You may need a new cap assembly if this reoccurs. > > > >John Davies >http://home.comcast.net/~johnedavies/ >'96 Lexus LX450 >'00 Audi A4 1.8T quattro >Spokane WA USA |
Re: Check Engine light: loose gas cap LOL!
In message <7lsie09auilsaat4u1sfqktjj3rcq6er29@4ax.com>, "John Davies" wrote:
>On 05 Jul 2004 05:00:35 GMT, wblane@aol.combotizer (Wblane) wrote: > >>I can't beleive it, I was getting intermittent Check Engine lights on my '91' >>XJ. After reading this newsgroup I tried cranking down my gas cap a little more >>and now no more Check Engine light. The thing I'm wondering is why does the >>emissions system care if my gas cap isn't >>completely tight? Is the fuel tank pressurized or something? > >Yes. There is a pressure sensor in the fuel line to the charcoal >cannister. LOL I suppose you've seen this sensor, eh? >If the vapor pressure is too low it will trigger the check >engine light. All modern cars and trucks have sealed gas caps, and >have for many years now. > >Always check the cap first thing if you get a light and have no code >reader handy. It's a relatively common problem. > >You may need a new cap assembly if this reoccurs. > > > >John Davies >http://home.comcast.net/~johnedavies/ >'96 Lexus LX450 >'00 Audi A4 1.8T quattro >Spokane WA USA |
Re: Check Engine light: loose gas cap LOL!
In message <7lsie09auilsaat4u1sfqktjj3rcq6er29@4ax.com>, "John Davies" wrote:
>On 05 Jul 2004 05:00:35 GMT, wblane@aol.combotizer (Wblane) wrote: > >>I can't beleive it, I was getting intermittent Check Engine lights on my '91' >>XJ. After reading this newsgroup I tried cranking down my gas cap a little more >>and now no more Check Engine light. The thing I'm wondering is why does the >>emissions system care if my gas cap isn't >>completely tight? Is the fuel tank pressurized or something? > >Yes. There is a pressure sensor in the fuel line to the charcoal >cannister. LOL I suppose you've seen this sensor, eh? >If the vapor pressure is too low it will trigger the check >engine light. All modern cars and trucks have sealed gas caps, and >have for many years now. > >Always check the cap first thing if you get a light and have no code >reader handy. It's a relatively common problem. > >You may need a new cap assembly if this reoccurs. > > > >John Davies >http://home.comcast.net/~johnedavies/ >'96 Lexus LX450 >'00 Audi A4 1.8T quattro >Spokane WA USA |
Re: Check Engine light: loose gas cap LOL!
Sure it does, check out trouble code 31.
Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's bllsht wrote: > > Better keep looking for the cause of that Check Engine light. A 1991 XJ > couldn't care less if you took the gas cap off and threw it away. > > Jeep didn't start monitoring the evap system until 1996, when OBD II was > implemented. > > In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: > > >I can't beleive it, I was getting intermittent Check Engine lights on my '91' > >XJ. After reading this newsgroup I tried cranking down my gas cap a little more > >and now no more Check Engine light. The thing I'm wondering is why does the > >emissions system care if my gas cap isn't > >completely tight? Is the fuel tank pressurized or something? > >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Sure it does, check out trouble code 31.
Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's bllsht wrote: > > Better keep looking for the cause of that Check Engine light. A 1991 XJ > couldn't care less if you took the gas cap off and threw it away. > > Jeep didn't start monitoring the evap system until 1996, when OBD II was > implemented. > > In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: > > >I can't beleive it, I was getting intermittent Check Engine lights on my '91' > >XJ. After reading this newsgroup I tried cranking down my gas cap a little more > >and now no more Check Engine light. The thing I'm wondering is why does the > >emissions system care if my gas cap isn't > >completely tight? Is the fuel tank pressurized or something? > >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Sure it does, check out trouble code 31.
Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's bllsht wrote: > > Better keep looking for the cause of that Check Engine light. A 1991 XJ > couldn't care less if you took the gas cap off and threw it away. > > Jeep didn't start monitoring the evap system until 1996, when OBD II was > implemented. > > In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: > > >I can't beleive it, I was getting intermittent Check Engine lights on my '91' > >XJ. After reading this newsgroup I tried cranking down my gas cap a little more > >and now no more Check Engine light. The thing I'm wondering is why does the > >emissions system care if my gas cap isn't > >completely tight? Is the fuel tank pressurized or something? > >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
Sure it does, check out trouble code 31.
Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's bllsht wrote: > > Better keep looking for the cause of that Check Engine light. A 1991 XJ > couldn't care less if you took the gas cap off and threw it away. > > Jeep didn't start monitoring the evap system until 1996, when OBD II was > implemented. > > In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: > > >I can't beleive it, I was getting intermittent Check Engine lights on my '91' > >XJ. After reading this newsgroup I tried cranking down my gas cap a little more > >and now no more Check Engine light. The thing I'm wondering is why does the > >emissions system care if my gas cap isn't > >completely tight? Is the fuel tank pressurized or something? > >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
I only have a spark brain box, but the SMOG nazis test the '78
Bronco vapor pressure: http://www.----------.com/smog.jpg God Bless America, ßill O|||||||O mailto:-------------------- Mike Romain wrote: > > Sure it does, check out trouble code 31. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's |
Re: Check Engine light: loose gas cap LOL!
I only have a spark brain box, but the SMOG nazis test the '78
Bronco vapor pressure: http://www.----------.com/smog.jpg God Bless America, ßill O|||||||O mailto:-------------------- Mike Romain wrote: > > Sure it does, check out trouble code 31. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's |
Re: Check Engine light: loose gas cap LOL!
I only have a spark brain box, but the SMOG nazis test the '78
Bronco vapor pressure: http://www.----------.com/smog.jpg God Bless America, ßill O|||||||O mailto:-------------------- Mike Romain wrote: > > Sure it does, check out trouble code 31. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's |
Re: Check Engine light: loose gas cap LOL!
I only have a spark brain box, but the SMOG nazis test the '78
Bronco vapor pressure: http://www.----------.com/smog.jpg God Bless America, ßill O|||||||O mailto:-------------------- Mike Romain wrote: > > Sure it does, check out trouble code 31. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's |
Re: Check Engine light: loose gas cap LOL!
The 1991 XJ has no clue if the gas cap is on or off. It has no clue if the evap
system is leaking or not. You can post all the trouble codes you want, the fact is, the evap system is not monitored for leaks. In message <40E9A797.7F8524E0@sympatico.ca>, "Mike Romain" wrote: >Sure it does, check out trouble code 31. > >Mike >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >88 Cherokee 235 BFG AT's > > >bllsht wrote: >> >> Better keep looking for the cause of that Check Engine light. A 1991 XJ >> couldn't care less if you took the gas cap off and threw it away. >> >> Jeep didn't start monitoring the evap system until 1996, when OBD II was >> implemented. >> >> In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: >> >> >I can't beleive it, I was getting intermittent Check Engine lights on my '91' >> >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >> >and now no more Check Engine light. The thing I'm wondering is why does the >> >emissions system care if my gas cap isn't >> >completely tight? Is the fuel tank pressurized or something? >> >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
The 1991 XJ has no clue if the gas cap is on or off. It has no clue if the evap
system is leaking or not. You can post all the trouble codes you want, the fact is, the evap system is not monitored for leaks. In message <40E9A797.7F8524E0@sympatico.ca>, "Mike Romain" wrote: >Sure it does, check out trouble code 31. > >Mike >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >88 Cherokee 235 BFG AT's > > >bllsht wrote: >> >> Better keep looking for the cause of that Check Engine light. A 1991 XJ >> couldn't care less if you took the gas cap off and threw it away. >> >> Jeep didn't start monitoring the evap system until 1996, when OBD II was >> implemented. >> >> In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: >> >> >I can't beleive it, I was getting intermittent Check Engine lights on my '91' >> >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >> >and now no more Check Engine light. The thing I'm wondering is why does the >> >emissions system care if my gas cap isn't >> >completely tight? Is the fuel tank pressurized or something? >> >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
The 1991 XJ has no clue if the gas cap is on or off. It has no clue if the evap
system is leaking or not. You can post all the trouble codes you want, the fact is, the evap system is not monitored for leaks. In message <40E9A797.7F8524E0@sympatico.ca>, "Mike Romain" wrote: >Sure it does, check out trouble code 31. > >Mike >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >88 Cherokee 235 BFG AT's > > >bllsht wrote: >> >> Better keep looking for the cause of that Check Engine light. A 1991 XJ >> couldn't care less if you took the gas cap off and threw it away. >> >> Jeep didn't start monitoring the evap system until 1996, when OBD II was >> implemented. >> >> In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: >> >> >I can't beleive it, I was getting intermittent Check Engine lights on my '91' >> >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >> >and now no more Check Engine light. The thing I'm wondering is why does the >> >emissions system care if my gas cap isn't >> >completely tight? Is the fuel tank pressurized or something? >> >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
The 1991 XJ has no clue if the gas cap is on or off. It has no clue if the evap
system is leaking or not. You can post all the trouble codes you want, the fact is, the evap system is not monitored for leaks. In message <40E9A797.7F8524E0@sympatico.ca>, "Mike Romain" wrote: >Sure it does, check out trouble code 31. > >Mike >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >88 Cherokee 235 BFG AT's > > >bllsht wrote: >> >> Better keep looking for the cause of that Check Engine light. A 1991 XJ >> couldn't care less if you took the gas cap off and threw it away. >> >> Jeep didn't start monitoring the evap system until 1996, when OBD II was >> implemented. >> >> In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: >> >> >I can't beleive it, I was getting intermittent Check Engine lights on my '91' >> >XJ. After reading this newsgroup I tried cranking down my gas cap a little more >> >and now no more Check Engine light. The thing I'm wondering is why does the >> >emissions system care if my gas cap isn't >> >completely tight? Is the fuel tank pressurized or something? >> >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
You should have read that inspection report if you were going to refer to it.
There is a visual inspection of the evaporative controls. There is a functional test of the gas cap, when it's tested for leakage, as well as a visual inspection of the cap for proper fit and installation. The result for the Evaporative Controls Functional test is "N/A". Meaning: There is no functional test of the evap system performed during the smog test you're so proud of. They didn't do a vapor pressure test on your Bronco. In message <40E9AF60.7B40753D@cox.net>, "L.W." wrote: > I only have a spark brain box, but the SMOG nazis test the '78 >Bronco vapor pressure: http://www.----------.com/smog.jpg > God Bless America, ßill O|||||||O >mailto:-------------------- > >Mike Romain wrote: >> >> Sure it does, check out trouble code 31. >> >> Mike >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >> 88 Cherokee 235 BFG AT's |
Re: Check Engine light: loose gas cap LOL!
You should have read that inspection report if you were going to refer to it.
There is a visual inspection of the evaporative controls. There is a functional test of the gas cap, when it's tested for leakage, as well as a visual inspection of the cap for proper fit and installation. The result for the Evaporative Controls Functional test is "N/A". Meaning: There is no functional test of the evap system performed during the smog test you're so proud of. They didn't do a vapor pressure test on your Bronco. In message <40E9AF60.7B40753D@cox.net>, "L.W." wrote: > I only have a spark brain box, but the SMOG nazis test the '78 >Bronco vapor pressure: http://www.----------.com/smog.jpg > God Bless America, ßill O|||||||O >mailto:-------------------- > >Mike Romain wrote: >> >> Sure it does, check out trouble code 31. >> >> Mike >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >> 88 Cherokee 235 BFG AT's |
Re: Check Engine light: loose gas cap LOL!
You should have read that inspection report if you were going to refer to it.
There is a visual inspection of the evaporative controls. There is a functional test of the gas cap, when it's tested for leakage, as well as a visual inspection of the cap for proper fit and installation. The result for the Evaporative Controls Functional test is "N/A". Meaning: There is no functional test of the evap system performed during the smog test you're so proud of. They didn't do a vapor pressure test on your Bronco. In message <40E9AF60.7B40753D@cox.net>, "L.W." wrote: > I only have a spark brain box, but the SMOG nazis test the '78 >Bronco vapor pressure: http://www.----------.com/smog.jpg > God Bless America, ßill O|||||||O >mailto:-------------------- > >Mike Romain wrote: >> >> Sure it does, check out trouble code 31. >> >> Mike >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >> 88 Cherokee 235 BFG AT's |
Re: Check Engine light: loose gas cap LOL!
You should have read that inspection report if you were going to refer to it.
There is a visual inspection of the evaporative controls. There is a functional test of the gas cap, when it's tested for leakage, as well as a visual inspection of the cap for proper fit and installation. The result for the Evaporative Controls Functional test is "N/A". Meaning: There is no functional test of the evap system performed during the smog test you're so proud of. They didn't do a vapor pressure test on your Bronco. In message <40E9AF60.7B40753D@cox.net>, "L.W." wrote: > I only have a spark brain box, but the SMOG nazis test the '78 >Bronco vapor pressure: http://www.----------.com/smog.jpg > God Bless America, ßill O|||||||O >mailto:-------------------- > >Mike Romain wrote: >> >> Sure it does, check out trouble code 31. >> >> Mike >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >> 88 Cherokee 235 BFG AT's |
Re: Check Engine light: loose gas cap LOL!
I watched them pressurize my tank, and didn't look at the report.
You are right it came up on the print out as not applicable. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ bllsht wrote: > > You should have read that inspection report if you were going to refer to it. > > There is a visual inspection of the evaporative controls. There is a functional > test of the gas cap, when it's tested for leakage, as well as a visual > inspection of the cap for proper fit and installation. > > The result for the Evaporative Controls Functional test is "N/A". > > Meaning: There is no functional test of the evap system performed during the > smog test you're so proud of. > > They didn't do a vapor pressure test on your Bronco. |
Re: Check Engine light: loose gas cap LOL!
I watched them pressurize my tank, and didn't look at the report.
You are right it came up on the print out as not applicable. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ bllsht wrote: > > You should have read that inspection report if you were going to refer to it. > > There is a visual inspection of the evaporative controls. There is a functional > test of the gas cap, when it's tested for leakage, as well as a visual > inspection of the cap for proper fit and installation. > > The result for the Evaporative Controls Functional test is "N/A". > > Meaning: There is no functional test of the evap system performed during the > smog test you're so proud of. > > They didn't do a vapor pressure test on your Bronco. |
Re: Check Engine light: loose gas cap LOL!
I watched them pressurize my tank, and didn't look at the report.
You are right it came up on the print out as not applicable. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ bllsht wrote: > > You should have read that inspection report if you were going to refer to it. > > There is a visual inspection of the evaporative controls. There is a functional > test of the gas cap, when it's tested for leakage, as well as a visual > inspection of the cap for proper fit and installation. > > The result for the Evaporative Controls Functional test is "N/A". > > Meaning: There is no functional test of the evap system performed during the > smog test you're so proud of. > > They didn't do a vapor pressure test on your Bronco. |
Re: Check Engine light: loose gas cap LOL!
I watched them pressurize my tank, and didn't look at the report.
You are right it came up on the print out as not applicable. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ bllsht wrote: > > You should have read that inspection report if you were going to refer to it. > > There is a visual inspection of the evaporative controls. There is a functional > test of the gas cap, when it's tested for leakage, as well as a visual > inspection of the cap for proper fit and installation. > > The result for the Evaporative Controls Functional test is "N/A". > > Meaning: There is no functional test of the evap system performed during the > smog test you're so proud of. > > They didn't do a vapor pressure test on your Bronco. |
Re: Check Engine light: loose gas cap LOL!
My manual says different. It says to check the hoses and system for
leaks when code 31 comes up. That would include the gas cap.... I will believe the book instead off 'bllsht' any time... LOL! Mike bllsht wrote: > > The 1991 XJ has no clue if the gas cap is on or off. It has no clue if the evap > system is leaking or not. You can post all the trouble codes you want, the fact > is, the evap system is not monitored for leaks. > > In message <40E9A797.7F8524E0@sympatico.ca>, "Mike Romain" wrote: > > >Sure it does, check out trouble code 31. > > > >Mike > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > >88 Cherokee 235 BFG AT's > > > > > >bllsht wrote: > >> > >> Better keep looking for the cause of that Check Engine light. A 1991 XJ > >> couldn't care less if you took the gas cap off and threw it away. > >> > >> Jeep didn't start monitoring the evap system until 1996, when OBD II was > >> implemented. > >> > >> In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: > >> > >> >I can't beleive it, I was getting intermittent Check Engine lights on my '91' > >> >XJ. After reading this newsgroup I tried cranking down my gas cap a little more > >> >and now no more Check Engine light. The thing I'm wondering is why does the > >> >emissions system care if my gas cap isn't > >> >completely tight? Is the fuel tank pressurized or something? > >> >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
My manual says different. It says to check the hoses and system for
leaks when code 31 comes up. That would include the gas cap.... I will believe the book instead off 'bllsht' any time... LOL! Mike bllsht wrote: > > The 1991 XJ has no clue if the gas cap is on or off. It has no clue if the evap > system is leaking or not. You can post all the trouble codes you want, the fact > is, the evap system is not monitored for leaks. > > In message <40E9A797.7F8524E0@sympatico.ca>, "Mike Romain" wrote: > > >Sure it does, check out trouble code 31. > > > >Mike > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > >88 Cherokee 235 BFG AT's > > > > > >bllsht wrote: > >> > >> Better keep looking for the cause of that Check Engine light. A 1991 XJ > >> couldn't care less if you took the gas cap off and threw it away. > >> > >> Jeep didn't start monitoring the evap system until 1996, when OBD II was > >> implemented. > >> > >> In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: > >> > >> >I can't beleive it, I was getting intermittent Check Engine lights on my '91' > >> >XJ. After reading this newsgroup I tried cranking down my gas cap a little more > >> >and now no more Check Engine light. The thing I'm wondering is why does the > >> >emissions system care if my gas cap isn't > >> >completely tight? Is the fuel tank pressurized or something? > >> >-Bill (remove "botizer" to reply via email) |
Re: Check Engine light: loose gas cap LOL!
My manual says different. It says to check the hoses and system for
leaks when code 31 comes up. That would include the gas cap.... I will believe the book instead off 'bllsht' any time... LOL! Mike bllsht wrote: > > The 1991 XJ has no clue if the gas cap is on or off. It has no clue if the evap > system is leaking or not. You can post all the trouble codes you want, the fact > is, the evap system is not monitored for leaks. > > In message <40E9A797.7F8524E0@sympatico.ca>, "Mike Romain" wrote: > > >Sure it does, check out trouble code 31. > > > >Mike > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > >88 Cherokee 235 BFG AT's > > > > > >bllsht wrote: > >> > >> Better keep looking for the cause of that Check Engine light. A 1991 XJ > >> couldn't care less if you took the gas cap off and threw it away. > >> > >> Jeep didn't start monitoring the evap system until 1996, when OBD II was > >> implemented. > >> > >> In message <20040705010035.19192.00001177@mb-m06.aol.com>, "Wblane" wrote: > >> > >> >I can't beleive it, I was getting intermittent Check Engine lights on my '91' > >> >XJ. After reading this newsgroup I tried cranking down my gas cap a little more > >> >and now no more Check Engine light. The thing I'm wondering is why does the > >> >emissions system care if my gas cap isn't > >> >completely tight? Is the fuel tank pressurized or something? > >> >-Bill (remove "botizer" to reply via email) |
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