Question about 2003 Jeep Grand Cherokee

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When it's really hot outside my jeep won't start! I checked the coolant and it's fine I don't know what else it could be. It will start after I try a few times and then let it sit. Could it be the gas line or vapor lock?

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Check the fuel pump pressure when the jeep is at operating temperature. You can do the "easy" thing first, and replace the fuel filter, but I bet your fuel pump is going out.

Posted on Jul 04, 2009


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Won't start, battery good, starter good, swapped relays and still won't start

Any issues with the ignition switch itself? They are mostly made of plastic pieces. With the exception of the actual cylinder. Also depending on how long you had the battery issue,it may have damaged the alternator. They tend to go hand in hand,unless caught early enough. The alternator gets overworked due to the weak battery.

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Low coolant in reserve every week

Absolutely have to stop using it, until the issue is resolved,
just common sense

There are no Fluids on any vehicle that are consumed
or need topping off,ever

You have a leak & it has to be found

If you see no coolant leaks & you need to really
spend time looking.

Have to crawl all over & under the vehicle & don't miss a thing,
check both hot & cold & after a trip

You could have a head gasket going & that is not good,
you won't see any leaks with that situation.

Sep 14, 2012 | 2000 Jeep Grand Cherokee

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Car won't start when it's hot outside.

try changing the coolant temp. sensor located on the thermostat must be broken computer does not know how to regulate fuel and air adjustment.

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My 2000 jeep grand cherokee will start and drive fine. The check engine will turn on and it will die. Some times i can get it to start and then there is times that it won't. When it don't start, it...

There are many things to do with the engine management system the when the ECM light comes on it can kill the engine. You can go to an autoparts store and they will read the codes for free. Get the code number and description. let me know, i will help. Randy

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My 2005 Saturn Ion won't start! I've had quite a

Body Control Motion device:

Common on thjis car call your dealer to see if they have a recall.

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Jun 23, 2011 | 2005 Saturn ION

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My 4 cylinder 2000 jeep wrangler is overheating what is wrong with it

Re place the thermostat in engine Check to see if you are loosing coolant, Has the Radiator been cleaned outside with air and water hose for dust /dirt/ bugs.Check to see if coolant fan is working ok,Check to see if brakes are binding (by try to push on flat road),All these things will help find the fault,But if engine runs very hot and you loose coolant then it could be the Head gasket {bubbels in the water and coming out of overflow.
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Since you added coolant, now it is time to check the fans. If the fans do come on, than your thermostat needs to be replaced, Should be done every 4 years anyways.

Jun 03, 2009 | 2003 Jeep Grand Cherokee

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