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Re: Jeep Wrangler High Idle Problem
ok tested.
closed: .938v open: 3.9v defective TPS? On Aug 15, 5:50 pm, Mike Romain <roma...@sympatico.ca> wrote: > You can do a voltage test on it. > > If you have the AC off and the key just in 'run' with the engine off and > back probe the TPS plug with multimeter probes set to volts, it should > be at .02 volts at idle and 4.8 volts at wide open. > > Mike > > 97tjMike wrote: > > The Wrangler was in high idle today so I decided to investigate. I > > disconnected the TPS Sensor and the idle went back down to its normal > > RPMs. I then reconnected it and the RPMs went back up. Tried cleaning > > contacts, not help there. Perhaps the TPS is defective? It's still > > under warranty so I can just bring it back. > > > Mike > > > On Aug 14, 9:58 am, Mike Romain <roma...@sympatico.ca> wrote: > >> The TPS is a resistance based switch just like a volume control. You > >> can even test it with a multimeter set on ohms or live with the meter > >> set on volts. > > >> If it has a bad connection, this connection has a resistance factor that > >> isn't supposed to be there or an arcing issue which causes surges. > > >> When ours got a dirty connection, it would usually stall at the first > >> stop and get stuck on a 1500 to 2000 rpm fast idle. We were told back > >> in the 90's that we needed a new TPS in our Cherokee, We just retired > >> the Cherokee recently with that same 'dead' TPS in it.... > > >> All the computer sensors are very low power items that are very touchy > >> about their connections. > > >> A spray can of electronic contact cleaner will be a very good friend to > >> you as the Jeep gets older. It will sure save you money, because > >> changing out parts only fixes 'half' the connection... > > >> Mike > > >> 97tjMike wrote: > >>> How would the TPS affect idle speed? From my understanding, it is just > >>> a sending unit, meaning it can only give information to the PCM but > >>> cannot receive and therefore manipulate any settings. > >>> On Aug 13, 1:47 pm, Mike Romain <roma...@sympatico.ca> wrote: > >>>> Will Honea wrote: > >>>>> 97tjMike wrote: > >>>>>> Hello Everyone: > >>>>>> I have a 97 TJ and 95% of the time it idles perfectly. However, about > >>>>>> 5% of the time, usually when the vehicle has been run for more than 20 > >>>>>> minutes or so, the idle in neutral or park will shoot up to between > >>>>>> 1200 and 1500 RPM. The only way to get it to stop is to put the > >>>>>> vehicle into gear or to restart the car. If I restart it, it will not > >>>>>> happen for a while, but it eventually comes back. The TPS was recently > >>>>>> replaced, and I just replaced the idle air control valve, thinking > >>>>>> this may have been the problem, but it still has the same effect. I'm > >>>>>> thinking now that it may be the coolant temperature sensor (something > >>>>>> wacky when the engine is hotter making the vehicle run at higher > >>>>>> speeds??). Any suggestions? I'm hoping its not my computer... > >>>>> Clean the TPS connector. Go to an electronics parts store and buy some > >>>>> contact cleaner or WD40 works. Disconnect the TPS, clean, connect and > >>>>> disconnect several times, blow dry, then use some dielectric grease on the > >>>>> the connector seal ring to keep moisture out. > >>>> Yup, replacing parts only cleans 'half' the connection. > >>>> Mike > >>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > >>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile... > >>>> Canadian Off Road Trips Photos: Non members can still view! > >>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > >>>> (More Off Road album links at bottom of the view page) |
Re: Jeep Wrangler High Idle Problem
ok tested.
closed: .938v open: 3.9v defective TPS? On Aug 15, 5:50 pm, Mike Romain <roma...@sympatico.ca> wrote: > You can do a voltage test on it. > > If you have the AC off and the key just in 'run' with the engine off and > back probe the TPS plug with multimeter probes set to volts, it should > be at .02 volts at idle and 4.8 volts at wide open. > > Mike > > 97tjMike wrote: > > The Wrangler was in high idle today so I decided to investigate. I > > disconnected the TPS Sensor and the idle went back down to its normal > > RPMs. I then reconnected it and the RPMs went back up. Tried cleaning > > contacts, not help there. Perhaps the TPS is defective? It's still > > under warranty so I can just bring it back. > > > Mike > > > On Aug 14, 9:58 am, Mike Romain <roma...@sympatico.ca> wrote: > >> The TPS is a resistance based switch just like a volume control. You > >> can even test it with a multimeter set on ohms or live with the meter > >> set on volts. > > >> If it has a bad connection, this connection has a resistance factor that > >> isn't supposed to be there or an arcing issue which causes surges. > > >> When ours got a dirty connection, it would usually stall at the first > >> stop and get stuck on a 1500 to 2000 rpm fast idle. We were told back > >> in the 90's that we needed a new TPS in our Cherokee, We just retired > >> the Cherokee recently with that same 'dead' TPS in it.... > > >> All the computer sensors are very low power items that are very touchy > >> about their connections. > > >> A spray can of electronic contact cleaner will be a very good friend to > >> you as the Jeep gets older. It will sure save you money, because > >> changing out parts only fixes 'half' the connection... > > >> Mike > > >> 97tjMike wrote: > >>> How would the TPS affect idle speed? From my understanding, it is just > >>> a sending unit, meaning it can only give information to the PCM but > >>> cannot receive and therefore manipulate any settings. > >>> On Aug 13, 1:47 pm, Mike Romain <roma...@sympatico.ca> wrote: > >>>> Will Honea wrote: > >>>>> 97tjMike wrote: > >>>>>> Hello Everyone: > >>>>>> I have a 97 TJ and 95% of the time it idles perfectly. However, about > >>>>>> 5% of the time, usually when the vehicle has been run for more than 20 > >>>>>> minutes or so, the idle in neutral or park will shoot up to between > >>>>>> 1200 and 1500 RPM. The only way to get it to stop is to put the > >>>>>> vehicle into gear or to restart the car. If I restart it, it will not > >>>>>> happen for a while, but it eventually comes back. The TPS was recently > >>>>>> replaced, and I just replaced the idle air control valve, thinking > >>>>>> this may have been the problem, but it still has the same effect. I'm > >>>>>> thinking now that it may be the coolant temperature sensor (something > >>>>>> wacky when the engine is hotter making the vehicle run at higher > >>>>>> speeds??). Any suggestions? I'm hoping its not my computer... > >>>>> Clean the TPS connector. Go to an electronics parts store and buy some > >>>>> contact cleaner or WD40 works. Disconnect the TPS, clean, connect and > >>>>> disconnect several times, blow dry, then use some dielectric grease on the > >>>>> the connector seal ring to keep moisture out. > >>>> Yup, replacing parts only cleans 'half' the connection. > >>>> Mike > >>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > >>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile... > >>>> Canadian Off Road Trips Photos: Non members can still view! > >>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > >>>> (More Off Road album links at bottom of the view page) |
Re: Jeep Wrangler High Idle Problem
ok tested.
closed: .938v open: 3.9v defective TPS? On Aug 15, 5:50 pm, Mike Romain <roma...@sympatico.ca> wrote: > You can do a voltage test on it. > > If you have the AC off and the key just in 'run' with the engine off and > back probe the TPS plug with multimeter probes set to volts, it should > be at .02 volts at idle and 4.8 volts at wide open. > > Mike > > 97tjMike wrote: > > The Wrangler was in high idle today so I decided to investigate. I > > disconnected the TPS Sensor and the idle went back down to its normal > > RPMs. I then reconnected it and the RPMs went back up. Tried cleaning > > contacts, not help there. Perhaps the TPS is defective? It's still > > under warranty so I can just bring it back. > > > Mike > > > On Aug 14, 9:58 am, Mike Romain <roma...@sympatico.ca> wrote: > >> The TPS is a resistance based switch just like a volume control. You > >> can even test it with a multimeter set on ohms or live with the meter > >> set on volts. > > >> If it has a bad connection, this connection has a resistance factor that > >> isn't supposed to be there or an arcing issue which causes surges. > > >> When ours got a dirty connection, it would usually stall at the first > >> stop and get stuck on a 1500 to 2000 rpm fast idle. We were told back > >> in the 90's that we needed a new TPS in our Cherokee, We just retired > >> the Cherokee recently with that same 'dead' TPS in it.... > > >> All the computer sensors are very low power items that are very touchy > >> about their connections. > > >> A spray can of electronic contact cleaner will be a very good friend to > >> you as the Jeep gets older. It will sure save you money, because > >> changing out parts only fixes 'half' the connection... > > >> Mike > > >> 97tjMike wrote: > >>> How would the TPS affect idle speed? From my understanding, it is just > >>> a sending unit, meaning it can only give information to the PCM but > >>> cannot receive and therefore manipulate any settings. > >>> On Aug 13, 1:47 pm, Mike Romain <roma...@sympatico.ca> wrote: > >>>> Will Honea wrote: > >>>>> 97tjMike wrote: > >>>>>> Hello Everyone: > >>>>>> I have a 97 TJ and 95% of the time it idles perfectly. However, about > >>>>>> 5% of the time, usually when the vehicle has been run for more than 20 > >>>>>> minutes or so, the idle in neutral or park will shoot up to between > >>>>>> 1200 and 1500 RPM. The only way to get it to stop is to put the > >>>>>> vehicle into gear or to restart the car. If I restart it, it will not > >>>>>> happen for a while, but it eventually comes back. The TPS was recently > >>>>>> replaced, and I just replaced the idle air control valve, thinking > >>>>>> this may have been the problem, but it still has the same effect. I'm > >>>>>> thinking now that it may be the coolant temperature sensor (something > >>>>>> wacky when the engine is hotter making the vehicle run at higher > >>>>>> speeds??). Any suggestions? I'm hoping its not my computer... > >>>>> Clean the TPS connector. Go to an electronics parts store and buy some > >>>>> contact cleaner or WD40 works. Disconnect the TPS, clean, connect and > >>>>> disconnect several times, blow dry, then use some dielectric grease on the > >>>>> the connector seal ring to keep moisture out. > >>>> Yup, replacing parts only cleans 'half' the connection. > >>>> Mike > >>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > >>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile... > >>>> Canadian Off Road Trips Photos: Non members can still view! > >>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > >>>> (More Off Road album links at bottom of the view page) |
Re: Jeep Wrangler High Idle Problem
Sure sounds like it. The idle reading it high.
Mike 97tjMike wrote: > ok tested. > closed: .938v > open: 3.9v > > defective TPS? > > > On Aug 15, 5:50 pm, Mike Romain <roma...@sympatico.ca> wrote: >> You can do a voltage test on it. >> >> If you have the AC off and the key just in 'run' with the engine off and >> back probe the TPS plug with multimeter probes set to volts, it should >> be at .02 volts at idle and 4.8 volts at wide open. >> >> Mike >> >> 97tjMike wrote: >>> The Wrangler was in high idle today so I decided to investigate. I >>> disconnected the TPS Sensor and the idle went back down to its normal >>> RPMs. I then reconnected it and the RPMs went back up. Tried cleaning >>> contacts, not help there. Perhaps the TPS is defective? It's still >>> under warranty so I can just bring it back. >>> Mike >>> On Aug 14, 9:58 am, Mike Romain <roma...@sympatico.ca> wrote: >>>> The TPS is a resistance based switch just like a volume control. You >>>> can even test it with a multimeter set on ohms or live with the meter >>>> set on volts. >>>> If it has a bad connection, this connection has a resistance factor that >>>> isn't supposed to be there or an arcing issue which causes surges. >>>> When ours got a dirty connection, it would usually stall at the first >>>> stop and get stuck on a 1500 to 2000 rpm fast idle. We were told back >>>> in the 90's that we needed a new TPS in our Cherokee, We just retired >>>> the Cherokee recently with that same 'dead' TPS in it.... >>>> All the computer sensors are very low power items that are very touchy >>>> about their connections. >>>> A spray can of electronic contact cleaner will be a very good friend to >>>> you as the Jeep gets older. It will sure save you money, because >>>> changing out parts only fixes 'half' the connection... >>>> Mike >>>> 97tjMike wrote: >>>>> How would the TPS affect idle speed? From my understanding, it is just >>>>> a sending unit, meaning it can only give information to the PCM but >>>>> cannot receive and therefore manipulate any settings. >>>>> On Aug 13, 1:47 pm, Mike Romain <roma...@sympatico.ca> wrote: >>>>>> Will Honea wrote: >>>>>>> 97tjMike wrote: >>>>>>>> Hello Everyone: >>>>>>>> I have a 97 TJ and 95% of the time it idles perfectly. However, about >>>>>>>> 5% of the time, usually when the vehicle has been run for more than 20 >>>>>>>> minutes or so, the idle in neutral or park will shoot up to between >>>>>>>> 1200 and 1500 RPM. The only way to get it to stop is to put the >>>>>>>> vehicle into gear or to restart the car. If I restart it, it will not >>>>>>>> happen for a while, but it eventually comes back. The TPS was recently >>>>>>>> replaced, and I just replaced the idle air control valve, thinking >>>>>>>> this may have been the problem, but it still has the same effect. I'm >>>>>>>> thinking now that it may be the coolant temperature sensor (something >>>>>>>> wacky when the engine is hotter making the vehicle run at higher >>>>>>>> speeds??). Any suggestions? I'm hoping its not my computer... >>>>>>> Clean the TPS connector. Go to an electronics parts store and buy some >>>>>>> contact cleaner or WD40 works. Disconnect the TPS, clean, connect and >>>>>>> disconnect several times, blow dry, then use some dielectric grease on the >>>>>>> the connector seal ring to keep moisture out. >>>>>> Yup, replacing parts only cleans 'half' the connection. >>>>>> Mike >>>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >>>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile... >>>>>> Canadian Off Road Trips Photos: Non members can still view! >>>>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 >>>>>> (More Off Road album links at bottom of the view page) > > |
Re: Jeep Wrangler High Idle Problem
Sure sounds like it. The idle reading it high.
Mike 97tjMike wrote: > ok tested. > closed: .938v > open: 3.9v > > defective TPS? > > > On Aug 15, 5:50 pm, Mike Romain <roma...@sympatico.ca> wrote: >> You can do a voltage test on it. >> >> If you have the AC off and the key just in 'run' with the engine off and >> back probe the TPS plug with multimeter probes set to volts, it should >> be at .02 volts at idle and 4.8 volts at wide open. >> >> Mike >> >> 97tjMike wrote: >>> The Wrangler was in high idle today so I decided to investigate. I >>> disconnected the TPS Sensor and the idle went back down to its normal >>> RPMs. I then reconnected it and the RPMs went back up. Tried cleaning >>> contacts, not help there. Perhaps the TPS is defective? It's still >>> under warranty so I can just bring it back. >>> Mike >>> On Aug 14, 9:58 am, Mike Romain <roma...@sympatico.ca> wrote: >>>> The TPS is a resistance based switch just like a volume control. You >>>> can even test it with a multimeter set on ohms or live with the meter >>>> set on volts. >>>> If it has a bad connection, this connection has a resistance factor that >>>> isn't supposed to be there or an arcing issue which causes surges. >>>> When ours got a dirty connection, it would usually stall at the first >>>> stop and get stuck on a 1500 to 2000 rpm fast idle. We were told back >>>> in the 90's that we needed a new TPS in our Cherokee, We just retired >>>> the Cherokee recently with that same 'dead' TPS in it.... >>>> All the computer sensors are very low power items that are very touchy >>>> about their connections. >>>> A spray can of electronic contact cleaner will be a very good friend to >>>> you as the Jeep gets older. It will sure save you money, because >>>> changing out parts only fixes 'half' the connection... >>>> Mike >>>> 97tjMike wrote: >>>>> How would the TPS affect idle speed? From my understanding, it is just >>>>> a sending unit, meaning it can only give information to the PCM but >>>>> cannot receive and therefore manipulate any settings. >>>>> On Aug 13, 1:47 pm, Mike Romain <roma...@sympatico.ca> wrote: >>>>>> Will Honea wrote: >>>>>>> 97tjMike wrote: >>>>>>>> Hello Everyone: >>>>>>>> I have a 97 TJ and 95% of the time it idles perfectly. However, about >>>>>>>> 5% of the time, usually when the vehicle has been run for more than 20 >>>>>>>> minutes or so, the idle in neutral or park will shoot up to between >>>>>>>> 1200 and 1500 RPM. The only way to get it to stop is to put the >>>>>>>> vehicle into gear or to restart the car. If I restart it, it will not >>>>>>>> happen for a while, but it eventually comes back. The TPS was recently >>>>>>>> replaced, and I just replaced the idle air control valve, thinking >>>>>>>> this may have been the problem, but it still has the same effect. I'm >>>>>>>> thinking now that it may be the coolant temperature sensor (something >>>>>>>> wacky when the engine is hotter making the vehicle run at higher >>>>>>>> speeds??). Any suggestions? I'm hoping its not my computer... >>>>>>> Clean the TPS connector. Go to an electronics parts store and buy some >>>>>>> contact cleaner or WD40 works. Disconnect the TPS, clean, connect and >>>>>>> disconnect several times, blow dry, then use some dielectric grease on the >>>>>>> the connector seal ring to keep moisture out. >>>>>> Yup, replacing parts only cleans 'half' the connection. >>>>>> Mike >>>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >>>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile... >>>>>> Canadian Off Road Trips Photos: Non members can still view! >>>>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 >>>>>> (More Off Road album links at bottom of the view page) > > |
Re: Jeep Wrangler High Idle Problem
Sure sounds like it. The idle reading it high.
Mike 97tjMike wrote: > ok tested. > closed: .938v > open: 3.9v > > defective TPS? > > > On Aug 15, 5:50 pm, Mike Romain <roma...@sympatico.ca> wrote: >> You can do a voltage test on it. >> >> If you have the AC off and the key just in 'run' with the engine off and >> back probe the TPS plug with multimeter probes set to volts, it should >> be at .02 volts at idle and 4.8 volts at wide open. >> >> Mike >> >> 97tjMike wrote: >>> The Wrangler was in high idle today so I decided to investigate. I >>> disconnected the TPS Sensor and the idle went back down to its normal >>> RPMs. I then reconnected it and the RPMs went back up. Tried cleaning >>> contacts, not help there. Perhaps the TPS is defective? It's still >>> under warranty so I can just bring it back. >>> Mike >>> On Aug 14, 9:58 am, Mike Romain <roma...@sympatico.ca> wrote: >>>> The TPS is a resistance based switch just like a volume control. You >>>> can even test it with a multimeter set on ohms or live with the meter >>>> set on volts. >>>> If it has a bad connection, this connection has a resistance factor that >>>> isn't supposed to be there or an arcing issue which causes surges. >>>> When ours got a dirty connection, it would usually stall at the first >>>> stop and get stuck on a 1500 to 2000 rpm fast idle. We were told back >>>> in the 90's that we needed a new TPS in our Cherokee, We just retired >>>> the Cherokee recently with that same 'dead' TPS in it.... >>>> All the computer sensors are very low power items that are very touchy >>>> about their connections. >>>> A spray can of electronic contact cleaner will be a very good friend to >>>> you as the Jeep gets older. It will sure save you money, because >>>> changing out parts only fixes 'half' the connection... >>>> Mike >>>> 97tjMike wrote: >>>>> How would the TPS affect idle speed? From my understanding, it is just >>>>> a sending unit, meaning it can only give information to the PCM but >>>>> cannot receive and therefore manipulate any settings. >>>>> On Aug 13, 1:47 pm, Mike Romain <roma...@sympatico.ca> wrote: >>>>>> Will Honea wrote: >>>>>>> 97tjMike wrote: >>>>>>>> Hello Everyone: >>>>>>>> I have a 97 TJ and 95% of the time it idles perfectly. However, about >>>>>>>> 5% of the time, usually when the vehicle has been run for more than 20 >>>>>>>> minutes or so, the idle in neutral or park will shoot up to between >>>>>>>> 1200 and 1500 RPM. The only way to get it to stop is to put the >>>>>>>> vehicle into gear or to restart the car. If I restart it, it will not >>>>>>>> happen for a while, but it eventually comes back. The TPS was recently >>>>>>>> replaced, and I just replaced the idle air control valve, thinking >>>>>>>> this may have been the problem, but it still has the same effect. I'm >>>>>>>> thinking now that it may be the coolant temperature sensor (something >>>>>>>> wacky when the engine is hotter making the vehicle run at higher >>>>>>>> speeds??). Any suggestions? I'm hoping its not my computer... >>>>>>> Clean the TPS connector. Go to an electronics parts store and buy some >>>>>>> contact cleaner or WD40 works. Disconnect the TPS, clean, connect and >>>>>>> disconnect several times, blow dry, then use some dielectric grease on the >>>>>>> the connector seal ring to keep moisture out. >>>>>> Yup, replacing parts only cleans 'half' the connection. >>>>>> Mike >>>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >>>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile... >>>>>> Canadian Off Road Trips Photos: Non members can still view! >>>>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 >>>>>> (More Off Road album links at bottom of the view page) > > |
Re: Jeep Wrangler High Idle Problem
Sure sounds like it. The idle reading it high.
Mike 97tjMike wrote: > ok tested. > closed: .938v > open: 3.9v > > defective TPS? > > > On Aug 15, 5:50 pm, Mike Romain <roma...@sympatico.ca> wrote: >> You can do a voltage test on it. >> >> If you have the AC off and the key just in 'run' with the engine off and >> back probe the TPS plug with multimeter probes set to volts, it should >> be at .02 volts at idle and 4.8 volts at wide open. >> >> Mike >> >> 97tjMike wrote: >>> The Wrangler was in high idle today so I decided to investigate. I >>> disconnected the TPS Sensor and the idle went back down to its normal >>> RPMs. I then reconnected it and the RPMs went back up. Tried cleaning >>> contacts, not help there. Perhaps the TPS is defective? It's still >>> under warranty so I can just bring it back. >>> Mike >>> On Aug 14, 9:58 am, Mike Romain <roma...@sympatico.ca> wrote: >>>> The TPS is a resistance based switch just like a volume control. You >>>> can even test it with a multimeter set on ohms or live with the meter >>>> set on volts. >>>> If it has a bad connection, this connection has a resistance factor that >>>> isn't supposed to be there or an arcing issue which causes surges. >>>> When ours got a dirty connection, it would usually stall at the first >>>> stop and get stuck on a 1500 to 2000 rpm fast idle. We were told back >>>> in the 90's that we needed a new TPS in our Cherokee, We just retired >>>> the Cherokee recently with that same 'dead' TPS in it.... >>>> All the computer sensors are very low power items that are very touchy >>>> about their connections. >>>> A spray can of electronic contact cleaner will be a very good friend to >>>> you as the Jeep gets older. It will sure save you money, because >>>> changing out parts only fixes 'half' the connection... >>>> Mike >>>> 97tjMike wrote: >>>>> How would the TPS affect idle speed? From my understanding, it is just >>>>> a sending unit, meaning it can only give information to the PCM but >>>>> cannot receive and therefore manipulate any settings. >>>>> On Aug 13, 1:47 pm, Mike Romain <roma...@sympatico.ca> wrote: >>>>>> Will Honea wrote: >>>>>>> 97tjMike wrote: >>>>>>>> Hello Everyone: >>>>>>>> I have a 97 TJ and 95% of the time it idles perfectly. However, about >>>>>>>> 5% of the time, usually when the vehicle has been run for more than 20 >>>>>>>> minutes or so, the idle in neutral or park will shoot up to between >>>>>>>> 1200 and 1500 RPM. The only way to get it to stop is to put the >>>>>>>> vehicle into gear or to restart the car. If I restart it, it will not >>>>>>>> happen for a while, but it eventually comes back. The TPS was recently >>>>>>>> replaced, and I just replaced the idle air control valve, thinking >>>>>>>> this may have been the problem, but it still has the same effect. I'm >>>>>>>> thinking now that it may be the coolant temperature sensor (something >>>>>>>> wacky when the engine is hotter making the vehicle run at higher >>>>>>>> speeds??). Any suggestions? I'm hoping its not my computer... >>>>>>> Clean the TPS connector. Go to an electronics parts store and buy some >>>>>>> contact cleaner or WD40 works. Disconnect the TPS, clean, connect and >>>>>>> disconnect several times, blow dry, then use some dielectric grease on the >>>>>>> the connector seal ring to keep moisture out. >>>>>> Yup, replacing parts only cleans 'half' the connection. >>>>>> Mike >>>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >>>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile... >>>>>> Canadian Off Road Trips Photos: Non members can still view! >>>>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 >>>>>> (More Off Road album links at bottom of the view page) > > |
Re: Jeep Wrangler High Idle Problem
Mike Romain wrote:
> Sure sounds like it. The idle reading it high. > Throttle closed > 200 milliVolts Throttle wide open < 4.8 Volts Anything in that range will adjust. The way you 3.9 is low as well. Measure the outer two pins to make sure your getting close to 5V. Before getting a new one, run the old one back and forth a few dozen times with the engine off, then measure again. Also make sure the connector is clean and free of crudbunnies. > 97tjMike wrote: >> ok tested. >> closed: .938v >> open: 3.9v >> >> defective TPS? |
Re: Jeep Wrangler High Idle Problem
Mike Romain wrote:
> Sure sounds like it. The idle reading it high. > Throttle closed > 200 milliVolts Throttle wide open < 4.8 Volts Anything in that range will adjust. The way you 3.9 is low as well. Measure the outer two pins to make sure your getting close to 5V. Before getting a new one, run the old one back and forth a few dozen times with the engine off, then measure again. Also make sure the connector is clean and free of crudbunnies. > 97tjMike wrote: >> ok tested. >> closed: .938v >> open: 3.9v >> >> defective TPS? |
Re: Jeep Wrangler High Idle Problem
Mike Romain wrote:
> Sure sounds like it. The idle reading it high. > Throttle closed > 200 milliVolts Throttle wide open < 4.8 Volts Anything in that range will adjust. The way you 3.9 is low as well. Measure the outer two pins to make sure your getting close to 5V. Before getting a new one, run the old one back and forth a few dozen times with the engine off, then measure again. Also make sure the connector is clean and free of crudbunnies. > 97tjMike wrote: >> ok tested. >> closed: .938v >> open: 3.9v >> >> defective TPS? |
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