Question about 1999 GMC Jimmy

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I have a 1998 jimmy which turnsover but will not start. Check the spark the coil only sparks when you turn the key back to off position.

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  • d_laury Jul 18, 2009

    I can not find the coil resistor do you have a picture or what is it close to.



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You need to replace the coil resistor on the back of the firewall. it's a 3 inclog ceramic square device with a wire on one end and two on the other, it lowers the voltake when the key is in the run postion to keep from burning up the coil when it shorts out it does what you are talking about it costs $20.00

Posted on Jul 18, 2009


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1 Answer

My 98;jimmy will not start engine turns but will not turn on

check for spark at the plugs then check for fuel. if one of these are missing the car won`t start. common problem on some of these was the ignition module in the distributor and sometimes the pickup coil wires would break. another thing to check is the distributor cap and rotor for damage like a cracked cap or burnt through rotor. fuel pump were also common.

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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.

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Apr 21, 2013 | 1998 Chrysler Sebring

1 Answer

1998 jimmy will turn over but wont start

check that the crank position sensor is ok as it has to work to sense the correct time to allow ignition and spark

Jan 14, 2013 | 1998 GMC Jimmy

1 Answer

1998 jimmy turns over but wont start

sounds like the coil has went bad or crank sensor

Dec 22, 2012 | 1998 GMC Jimmy

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Can see sparks comeinmng from the coil

you need new coil then cuz the one there sounds like its cracked or could be a bad wire depending where the sparks are coming from

Dec 10, 2012 | 1998 GMC Jimmy

1 Answer

Key turns,gas pump works, does not turn

Try this...

You need to check for spark at the number 1 spark plug if no spark then it could be a few things
1.crank shaft position sensor
2. distributor cap or plugs
3. pick up coil inside distributor
4. ignition coil
5.ignition module
6.Blowen fuse check both engine fuses and inside cab fuses
7. oil pressure switch
You can pull the coil wire going into the distributor cap and check for spark there if no spark there then your problem will be from the ignition coil back

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Check alarm for ignition and/or start cut off.

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94 gmc jimmy turns over starts for a second and dies has 60 psi at manifold new fuel pump new filter new relays new censors

Buy a tester to see if the spark plugs are getting fire as soon as it dies put the test light on a spark plug wire and see if you get spark if you don't get spark test positive side of coil is there voltage? On the positive side of coil put test light on the coil and put the other end on a ground and see if you have power to the coil if not you need to locate the coil resistor and see if it's defective. Let me know what you find out. Also check or replace the oil pressure switch on the back of the block, as it will cause the same thing. Please rate if this was helpful.

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