Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01) Show Would a bad Temperature sensor/switch cause no start? Junior Member Thread Starter
Join Date: Mar 2018 Location: Houston, TX Posts: 45 Year: 1996 Model: Cherokee (XJ) Engine: 4.0 Would a bad temperature sensor/switch cause a no start? The sensor I am referring to is the temperature switch on the front of the engine by the coolant pump on a 4L (1996 XJ). Getting good cranking and no start. -----UPDATE: Resolution was cleaning the air intake
and related after pumping gas pedal to see if would start with brute force ----- Thanks to all those who helped with the diagnostic. Last edited by bpm123; 11-17-2020 at 12:47 PM. Reason: Update on solution CF Veteran
Join Date: Dec 2017 Posts: 2,845 Year: 1989 Model: Comanche (MJ) No. It might make it run rich, but won't prevent a start. The following users liked this post: CF Veteran
Join Date: Dec 2015 Location: PA Posts: 3,038 Likes: 0 Year: 1997 Model: Cherokee Engine: 4.0L I heard of a bad temp switch causing a no start once, and only once, but it was a Ford. Never heard of that happening with an XJ. Could be the crank sensor, if its old, or it isnt Mopar. Do you hear the fuel pump priming? Whats the fuel pressure? Will it try to start using starting fluid? Does it have spark? Injector pulse? There are lots of reasons it wont start. Any codes?
CF Veteran
Join Date: Oct 2015 Posts: 6,969 Likes: 0 Year: 2000 Model: Cherokee (XJ)
I have heard about a bad temp sensor making a Jeep run crap. Junior Member Thread Starter
Join Date: Mar 2018 Location: Houston, TX Posts: 45 Year: 1996 Model: Cherokee (XJ) Engine: 4.0 Thanks for the feedback. Junior Member Thread Starter
Join Date: Mar 2018 Location: Houston, TX Posts: 45 Year: 1996 Model: Cherokee (XJ) Engine: 4.0 Quote: Originally Posted by fb97xj1 I heard of a bad temp switch causing a no start once, and only once, but it was a Ford. Never heard of that happening with an XJ. Could be the crank sensor, if its old, or it isnt Mopar. Do you hear the fuel pump priming? Whats the fuel pressure? Will it try to start using starting fluid? Does it have spark? Injector pulse? There are lots of reasons it wont start. Any codes? Crank sensor a possibility ... seen lots of posts. Crank sensor is a couple years old. Question: Is the RPM gauge is active while the engine is cranking? Seasoned Member
Join Date: Jul 2013 Location: PA Posts: 450 Year: 2000 Model: Cherokee Engine: 4.0 Quote: Originally Posted by fb97xj1 I heard of a bad temp switch causing a no start once, and only once, but it was a Ford. Never heard of that happening with an XJ. Could be the crank sensor, if its old, or it isnt Mopar. Do you hear the fuel pump priming? Whats the fuel pressure? Will it try to start using starting fluid? Does it have spark? Injector pulse? There are lots of reasons it wont start. Any codes? I used to have a 1990 Ranger, that had a no start issue due to bad coolant temp sensor. Not sure if the same issue could affect out Jeeps, but my Ranger was an absolute b***h to start until I replaced the sensor. Senior Member
Join Date: Dec 2016 Location: Long Island, New York Posts: 667 Year: 2001 Model: Cherokee On my 92 i built a switch that would jumper in a resistor in parallel with the t-stat sensor so the computer would think the coolant was about 20-25 degrees hotter than it actually was so the fan would turn on early at around 200 instead of 220ish. If i left
the switch "on" by accident and it was cold in the morning the jeep was very difficult to start a hot coolant temp makes the computer lean Thread Thread Starter Forum Last Post lasershark Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here 3 11-12-2019 07:09 AM CherokeeCam Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here 3 06-30-2018 04:44 PM randall L Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here 7 02-23-2013 04:40 PM 00exjay Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here 2 10-19-2012 03:40 PM JPG63368 Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here 10 08-18-2012 10:38 PM Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) What does it mean when your car runs hot and wont start?If your car won't start after overheating, there's a good chance you have a blown gasket, which is a very serious issue. Keeping your engine at the proper temperature is vital to keeping it running correctly. Overheating is usually caused by a problem with the coolant system.
Why is my Jeep Cherokee not starting?The most common reasons a Jeep Cherokee won't start are a dead battery, an alternator problem, or failed starter.
What causes a Jeep Cherokee to overheat?If your Jeep Cherokee is overheating, it's probably a coolant leak. Most of the time, overheating is caused by a leak somewhere in the coolant system, such as in the water pump, radiator, or one of the hoses. If you notice that your coolant fluid is low, this is almost certainly the cause.
How hot is too hot for Jeep Cherokee?You can see the temperature on the dashboard. If the temperature rises above 200 degrees Fahrenheit, the engine could overheat.
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2022 jeep cherokee engine temperature hot wont start
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