Question about 1994 GMC Jimmy

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The 94 jimmy is running rougf I did a full tune up I took one of the new spark plugs out a there was a lot of sout on it it was preety black it may be a dead cyender there is very littel spark

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YOU did the tune up? Check that the wires are in the right position, that the connection to the plug and distributor cap are good. Did you replace rotor and distributor cap? Wires could be needed. That wire might be bad

Posted on Feb 03, 2010

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1995grand cherokee4wd when truck is started it dies right out and won't stay running.


Hi Susan,
I would do a full tune up. Change oil. oil filter, air filter, fuel filter, spark plugs, plug wires, distributor cap and rotor. I know it sounds like a lot, but this is considered a full tune up. If problem persists let me know and we can go from there.

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94 jimmy will crank, runs good when cranked but when you turn it off won't crank til you let it sit or the next day. I can hear the fuel pump come on. The rotor button on the distributor is not po


Concentrate on the starting circuit: from the ignition switch to the neutral safety switch to the starter relay to the starter solenoid on the starter. If it won't crank, one of these parts or the wiring associated is not working right. Quite often the electrical contacts in the starter solenoid become pitted, slightly burned maybe, and lose contact. If you have power on the solenoid wire when key is held in crank and starter won't operate, the solenoid is the problem.

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1994 GMC S15/T15 Jimmy 4WD 4.3 liter V-6 VIN "W"

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Hope helps (remember to rate this answer).

Mar 21, 2011 | 1994 GMC Jimmy

1 Answer

My 2000 jimmy stop running. i have fuel presure, spark plug wires have spark. I replace both crank, cam, ignition modual sensor and the ecu. Also took of the mufler tinking it may be plug. Engine turns...


yeah, check the order of the spark plug wires on the distributor cap. Perhaps they might be mixed up not allowing it to run properly and yes, even sometimes stall. check that first if not, then check to see if you are getting fuel at the engine. If not then perhaps its a bad fuel pump...good luck!

Aug 25, 2010 | 2000 GMC Jimmy

1 Answer

My mpg's are way down I am only getting about 105 miles per full tank of gas. I put new spark plugs in and a new 02 and still mpg's are way down what do I do next?


Try a major tune up (spark plugs are only one part of it) fuel/air filter, PCV valve, cap, rotor, spark plug wires and adjust timing..

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check intake manifold for leaks and also inspect all vacuum hoses also may be good idea to replace opti spark ignition module its located on the coil mounting bracket at front of right cylinder head if its been exposed to water , antifreeze, or moisture it can effect ur cars timing

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Just buy a new set of wires and use the shortest to the closest spark plug and so on till you have them all connected make sure you follow the proper firing order

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My husband said to take tire off and go through the firewall to get to that one plug. That's what he done.

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