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GMC Jimmy Fuel System

88 messages,  Last post on Jul 02, 2009 at 5:22 AM

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#80 of 88 fuel systems by shootert Mar 21, 2009 (2:37 am)
tiffs26 catylic converters problems normaly cause your vehicle to run slugish with no power. Before costing a lot of money to replace take exhaust pipe loose from manifold and drive around block. It will be loud but if it does not run much better it's not the converter. Bolt it back up and look for a different problem.
#81 of 88 re studding while at a steady speed by bud357 May 20, 2009 (11:28 am)
right behind the master cylinder on the drivers side two little black boxes with wire going into it on the fire wall.
#82 of 88 I have a 1993 gmc jimmy by bud357 May 20, 2009 (11:29 am)
when you step on the gas going down the road it acts like it wants to bog out. like it is getting to much fuel. then when i let off th gas it picks back up speed. what can cause that. Replies to this message: shootert (May 20, 2009 12:38 pm)
#83 of 88 Re: I have a 1993 gmc jimmy [bud357] by shootert May 20, 2009 (12:38 pm)
Replying to: bud357 (May 20, 2009 11:29 am) Sounds like your fuel filter is starting to stop up.That's what mine was when it acted like that.
#84 of 88 $100 ignition question by jpmacky Jun 05, 2009 (3:38 pm)
My 99 Jimmy has power going to the igniton coil through the 2 wire plug but does not have power coming out of it. When you first crank it over you can get one spark out of the ignition coil wire then nothing.Because of that im not geting any spark to my distributor and nothing out of my distributor Replies to this message: tech1help (Jun 06, 2009 9:26 am) jpmacky (Jun 08, 2009 7:42 am) tech1help (Jun 09, 2009 11:24 pm)
#85 of 88 Re: $100 ignition question [jpmacky] by tech1help Jun 06, 2009 (9:26 am)
Replying to: jpmacky (Jun 05, 2009 3:38 pm) check your crank position sensor.if it is no good it will not allow ignition coil to give spark.it has three wires and is located at the front bottom right of engine.it has a 10mm hex nut with a bracket mounting it to the engine.you remove it then check it for ohms.it cost around $40 at your local autozone.so that leaves you $60. Replies to this message: jpmacky (Jun 08, 2009 7:42 am) tech1help (Jun 09, 2009 11:24 pm)
#86 of 88 Re: $100 ignition question [tech1help] by jpmacky Jun 08, 2009 (7:42 am)
Replying to: tech1help (Jun 06, 2009 9:26 am) I messed with the sensors over the weekend and was able to get it to fire, but only once. Now when you turn it over it will fire one initial spark and then nothing. Replies to this message: tech1help (Jun 09, 2009 11:24 pm)
#87 of 88 Re: $100 ignition question [jpmacky] by tech1help Jun 09, 2009 (11:24 pm)
Replying to: jpmacky (Jun 08, 2009 7:42 am) Did you check for continuity on the crank position sensor?if it as continuity it is ok. if only one side has power going in and nothing coming out; aside from the reference voltage. you can attempt to jump the wire using a paper clip or piggy back wire. just for testing purposes. it is shaytree. but i can not do to much being i am not in front of the vehicle. I have worked on many vortec engines. and the are very sensitive. also may have to look at you ignition module.it is located under distrubutor cap and rotor.it can be gray or black.you will see the wires coming out back and underneath distributor assembly
#88 of 88 how do i by pass the crank position sensor on 95 jimmy by evco Jul 02, 2009 (5:22 am)
how do i by pass the crank position sensor permitly on 95 jimmy v6 vortec? I had to replace the motor and the new motor does not have a spot for the crank sensor and I am not getting spark to coil or plugs. I tested all the parts and they are getting current so after reading the messages posted it seams this must to be my problem (I think). If anyone can help please do so. The car is for my wifes that had a stroke and it is the only one she can now drive. Thank You!

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