Question about 1998 GMC Jimmy

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Is it possible to install the fuel pump upside down on a 98 gmc jimmy and would this cause a check engine light to come on

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The fuel pump is designed to attach one way only. The wiring should be facing upward if you need to know, It is mounted on the sending float unit also in the tank

Posted on Feb 02, 2010

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Posted on Jan 02, 2017

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2 Answers

Changed IAC valve 94 gmc jimmy v6 4.3L. whenever the engine gets to normal running temp it shuts down an won't start until engine is cool. Could this be a bad MAP sensor? Or fuel injector solenoid?


Could be a bad coil, or ignition module right by the coil. Both will cause this. If you loose fuel pressure, it would be the pump. But pumps will usually start chugging before the engine dies. Most times it is the coil.

Jun 17, 2015 | 1994 GMC Jimmy

2 Answers

I have a 98 jimmy 4.3liter v-6. I have changed


Suspect the crankshaft/camshaft sensor may be bad which controls timing of both spark and injector firing. The check engine light should be on--rent a scanner, read any codes and pursue to repairs. Hope you installed the new distributor exactly as the old one.

Nov 15, 2009 | 1998 GMC Jimmy

3 Answers

Could the mass air flow sensor cause 98 Jimmy to not start? It only turns over and begins to start but boggs out.


Yes it could cause it not to start or could start and run very rough. Are you sure you are getting proper fuel pressure? Could be many things that would cause it not to start and run though. Is your service engine soon light on the dashboard lit up? it is where your gauges are.

Jul 29, 2009 | 1998 GMC Jimmy

2 Answers

JUST DONT WANT TO RUN


Check the fuel pump.

Jan 09, 2009 | 1991 GMC S-15 Jimmy

1 Answer

FEELS LIKE GETTING NO GAS


cHECK THE FUEL PRESSURE AT THE RAIL. iF LOW i WOULD CHECK THE INLINE FILTER AND THEN A POSSIBLE PUMP

Jan 09, 2009 | 1991 GMC S-15 Jimmy

1 Answer

Electric fuel pump


under the hood on the top of the engine u will find the metal fuel supply rail, on that rail there is a metal valve it looks just like a tire valve, u check the fuel there with a test guage that screws on there at that port, the test guage is cheap and avail at any good parts store.

Dec 14, 2008 | 1998 GMC Jimmy

2 Answers

Hard starting after sitting awhile


My 98 Jimmy runs on synthetic oil and starts well after sitting in cold weather. If the weather is the problem, try checking that. If it is warm... sorry no ideas.

Dec 02, 2008 | 1998 GMC Jimmy

2 Answers

1998 GMC Jimmy, bogged down, stalled and won't sart back up


does it have spark? you did verify fuel pump working properly? could it have a clogged converter? is the engine lite on?

Nov 16, 2008 | 1998 GMC Jimmy

2 Answers

Engine problem


yes it is possible but check fuel .press. and possibly fuel filter if it hasnt been changed. but most likly going to be fuel pump problem.

Jun 03, 2008 | 1997 GMC Jimmy

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