Question about 1998 GMC Jimmy

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It takes a few cranks to get my 1998 jimmy to start a friend checked the fuel pressure and it was at 50 psi any idea what could be wrong?

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DIRTY FUEL INJECTORS FLOODING THE ENGINE.CLEAN INJECTOR BY.FILLING UP GAS TANK. PUT A BOTTLE OF FUEL INJECTOR CLEANER IN GAS TANK.DRIVE CAR FEW MILES SO THE INJECTOR CLEANER CAN FLUSH OUT CLEAN THE INJECTORS.

Posted on Sep 27, 2009

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My 2000 jimmy takes about 10 to 20 engine cranks in the morning when its cold out.when it starts its good the rest of the day. but its getting worse the amount of cranking the engine over in the morn


I'd use a fuel pressure gage, check fuel pressure, key on, engine off, first thing in the morning, 60--66 psi, spider fuel system. If you have the spider fuel stem, that system is noted for problems.
There is a service bulletin for cold start-up problems, caused by fuel poppet valves sticking. Once you get it started, it runs fine the rest of the day. The poppet cleaning procedure shows to be a shop procedure.

Nov 18, 2016 | 2000 GMC Jimmy

1 Answer

I have a 1999 GMC jimmy 4 door 4x4 v6 4.3 ltr automatic with a starting problem, it starts with starting fluid and runs great afterwards can drive all over God's creation afterwards, but day a


Sounds like you are loosing fuel pressure overnight. Since it takes 70+ psi to start and run, if you have zero pressure in the morning, it would take a long time of cranking to get the pressure back up.
If it is low or no pressure, the problem could be a faulty check valve in the fuel pump.

Dec 01, 2014 | 1999 GMC Jimmy

1 Answer

I have a 1998 GMC Jimmy. It died while driving today. Had it towed home. It will not start. Have good fuel pressure and spark is yellowish. replaced coil and ignition module. Also swapped out ecm. tried...


I have replaced countless distributprs for this issue. also fuel pressure has to be abovr 50 psi or will not start needs 50 pdi to open poppit valves on injectors. also if the spiders ruptured will be to much fuel and won't start hook up fuel gauge turn key on till reaches max psi turn the key off shouldn't loose more tham 15-20 psi if it does suspect spiders leaking.

Oct 30, 2013 | 1998 GMC Jimmy

1 Answer

I have a 1998 jeep wrangler sport and it is having starting problems. i usually have to crank, release, then crank again to get it to start. it always ends up starting, but it takes a few tries. it occurs...


You can mount a fuel pressure guage to the engine fuel rail at its bicycle valve bleeder, with tof see if it has pressure when you first turn on the key to start. You may be able to hear the fuel pump running by listening at the fuel tank fill cap that you would remove for that moment. By turning on ignition to start, not run, you are energizing the fuel pump to bring up pressure that should happen in several seconds. So, check if it gets to normal fuel starting pressure, maybe 45 to 60 psi. Then turn key all the way to run, to get car engine running and watch the fuel pressure to see if it stays pretty constant at that 45 to 60 psi. Turn engine off, and watch how long it takes for fuel pressure to drop, and it should not happen fast but instead over 15 minutes or more. That might indicate your fuel regulator valve isn;t working right.
Is it possible your starting system is the culprit, say some battery cable loose that may make starting hard or eventually quit until you tighten these cable ends at battery and starter.

Aug 03, 2017 | 1998 Jeep Wrangler

2 Answers

1998 2500 chevy wont start unless i pour fuel in throtle body when engine is cold


Check your fuel pump pressure, it is probably down in the 50 lb range and it requires a bit above that to start. Once it starts it will run on that pressure. This is a chronic problem with these, my 1998 2500 was a GMC but it's the same vehicle. I put 385,000 miles on it with no engine or transmission trouble but I was on fuel pump number six when I sold it.

Jul 10, 2011 | Chevrolet 2500 Cars & Trucks

1 Answer

2000 Jimmy- fuel pump on, cranks good, starts intermittently- sometimes wont start- Ideas??


anti theft engaged, or weak fuel pump. Check fuel pressure, Just becaus it runs, Doesnt mean its not bad, 45 psi minimum to run

Jun 14, 2010 | 2000 GMC Jimmy

2 Answers

Will not start, it cranks It has new battery everything has been checked that we can think of


Check coil module and fuel pressure for bad fuel pump.You can spray starting fluid in the intake and crank the engine.If it starts for a couple seconds your module is OK and you have a fuel problem.

Nov 23, 2009 | 1998 Oldsmobile Bravada

2 Answers

2000 jimmy will crank but wont start fuel pump is pushing fuel through thr filter if i put a little gas in the air intake it fires up till it burns that fuel off. i can hear the fuel pump coming on and the...


you need to know what the fuel pressure at the fuel rail is (you can measure fuel pressure with a cheap gauge from harbour freight tools) it should be between
50-60 psi if not then the pump must be replaced
(gm replacment pumps are lifetime warranty )

Nov 17, 2009 | 2000 GMC Jimmy

1 Answer

I have a 2001 GMC Jimmy and I was driving and the car just stoppe


fuel pressure should be 55 to 61psi. could be a cloged filter or pressure reg

Jul 18, 2009 | 1998 GMC Jimmy

2 Answers

Fuel not getting to cylinders...pump, regualator, other?


30psi seems pretty low, should be around 45 or so. It sounds like your fuel pump is done again. What did you replace the pump with, OEM or a parts store part?

May 09, 2009 | 1998 GMC Jimmy

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