Question about 1999 GMC Jimmy

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1999 gmc jimmy will not start after it sits for a couple hours. have to spray starting fluid in injector will start fine after it has warmed up. it has a new fuel pump and filters and it is not missing out while running do not think it has anything to do with plugs or wires.Any suggestions?

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Check the water temp sensor. The temp sensor sends a signal to the computer to go rich on fuel when the vehicle is started with a cold engine. When the engine is warm the sensor tells the computer to go lean on fuel. If your senor has failed in the lean mode, as mine did, the vehicle won't start when the engine is cold. Once you get it started it will continue to start as long as the engine stays warm. Hope that helps.

Posted on Oct 08, 2012

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Where did you get the pump replaced?a dealer or local garage There are 2 pumps for the jimmy one for a plastis tank which is an 18 gal and one for a metal tank which is a 19 gal.if the jimmy has a metal tank get the 19 gal pump . i ran into the same problem with my 98 jimmy

Posted on Apr 17, 2009

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1999 GMC Jimmy won't start. Tried adding little gas into butterfly at air intake. Sounds like trying to fire a little. I took the distributer cap off. Cleaned contacts. Still won't start.


1999 jimmy doesn't have a carb. has fuel injection . From what you have typed here i would suggest you take your vehicle to a qualified repair shop !

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1992 gmc jimmy wont start unless i spray with starting fluid after it starts it will start every time untill the next day then i have to spray again ?


Fuel pump issue.--

Car not starting or turning over indicates towards multiple possibilities. It can be issue with battery or weak battery. But if battery checks out ok, then it can be starter issue or faulty alternator or problem with low fuel pressure or no spark at spark plugs due to dirty spark plugs or faulty ignition coil or injectors getting cracked or dirty and needs to be cleaned.


To confirm the problem, the basic troubleshooting is required.


Click this link below and follow the troubleshooting:------

http://technoanswers.blogspot.in/2012/02/car-starting-issues.html

---------

This will help.
Thanks.

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1 Answer

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1 Answer

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THOSE VEHICLES HAVE A HIGH PRESSURE FUEL PUMP THAT WILL ONLY START IF IT REACHES 60 PSI OR MORE.. BUT ONCE IT IS RUNNING REQUIRES LESS PRESSURE.... MAKE SURE THE FUEL PRESSURE WHEN STARTING EXCEEDS 60 PSI OR IT WILL NOT START...

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1997 jimmy woun't start


I'd like to come into contact with to purchase your vehicle

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