Check Engine light: loose gas cap LOL!
07-05-2004, 10:46 PM
#41
Guest
Posts: n/a
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)
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)
07-06-2004, 02:45 AM
#42
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
In message <40EA128B.F396C217@sympatico.ca>, "Mike Romain" wrote:
>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!
Your manual is wrong, and so are you.
>
>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)
>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!
Your manual is wrong, and so are you.
>
>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)
07-06-2004, 02:45 AM
#43
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
In message <40EA128B.F396C217@sympatico.ca>, "Mike Romain" wrote:
>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!
Your manual is wrong, and so are you.
>
>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)
>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!
Your manual is wrong, and so are you.
>
>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)
07-06-2004, 02:45 AM
#44
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
In message <40EA128B.F396C217@sympatico.ca>, "Mike Romain" wrote:
>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!
Your manual is wrong, and so are you.
>
>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)
>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!
Your manual is wrong, and so are you.
>
>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)
07-06-2004, 02:45 AM
#45
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
In message <40EA128B.F396C217@sympatico.ca>, "Mike Romain" wrote:
>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!
Your manual is wrong, and so are you.
>
>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)
>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!
Your manual is wrong, and so are you.
>
>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)
07-06-2004, 02:48 AM
#46
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
You were probably watching them pressure test the cap.
In message <40E9F66A.60058AFF@***.net>, "L.W." wrote:
> 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.
In message <40E9F66A.60058AFF@***.net>, "L.W." wrote:
> 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.
07-06-2004, 02:48 AM
#47
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
You were probably watching them pressure test the cap.
In message <40E9F66A.60058AFF@***.net>, "L.W." wrote:
> 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.
In message <40E9F66A.60058AFF@***.net>, "L.W." wrote:
> 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.
07-06-2004, 02:48 AM
#48
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
You were probably watching them pressure test the cap.
In message <40E9F66A.60058AFF@***.net>, "L.W." wrote:
> 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.
In message <40E9F66A.60058AFF@***.net>, "L.W." wrote:
> 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.
07-06-2004, 02:48 AM
#49
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
You were probably watching them pressure test the cap.
In message <40E9F66A.60058AFF@***.net>, "L.W." wrote:
> 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.
In message <40E9F66A.60058AFF@***.net>, "L.W." wrote:
> 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.
07-06-2004, 08:53 AM
#50
Guest
Posts: n/a
Re: Check Engine light: loose gas cap LOL!
"Your manual is wrong, and so are you."
Can't argue with that...
bllsht wrote:
> In message <40EA128B.F396C217@sympatico.ca>, "Mike Romain" wrote:
>
>
>>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!
>
>
> Your manual is wrong, and so are you.
>
>
>>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)
>
>
Can't argue with that...
bllsht wrote:
> In message <40EA128B.F396C217@sympatico.ca>, "Mike Romain" wrote:
>
>
>>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!
>
>
> Your manual is wrong, and so are you.
>
>
>>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)
>
>
