# 96 GMC Jimmy 4dr **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** jimmy, start, gmc\ **Created:** [July 27, 2011, 11:27pm UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637 "2011-07-27T23:27:06Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![96gmcjimmy](https://avatars.discourse-cdn.com/v4/letter/9/ee7513/32.png) [@96gmcjimmy](https://community.cartalk.com/u/96gmcjimmy)\ **Post date:** [July 27, 2011, 11:27pm UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637/1 "2011-07-27T23:27:06Z")
I have a 96 GMC Jimmy that will not start… I have replaced the spider fuel injector and now I get the right fuel pressure. I have random non regular spark that is very week. I have replaced the ignition coil, spark plug wires, spark plugs, distributor cap and rotor, cam sensor, the ECM, and the ignition control module. The crank sensor checked out to be good. I do not know where else to check… ---
**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\ **Post date:** [July 28, 2011, 3:15am UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637/2 "2011-07-28T03:15:30Z")
Bad ground or ignition switch? How sure are you about that crank sensor? ---
**Author:** ![96gmcjimmy](https://avatars.discourse-cdn.com/v4/letter/9/ee7513/32.png) [@96gmcjimmy](https://community.cartalk.com/u/96gmcjimmy)\ **Post date:** [July 28, 2011, 8:48pm UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637/3 "2011-07-28T20:48:11Z")
I am 95% positivethat it is not the issue. The haynes manual give you a test to try and i pasted it. I even swapped it out and tried my brothers sensor off of his blazer… The vehicle does turn over but nothing else… So i dont think it wouldbe the ignition switch. I hav also checked the grounds but I will recheck… ---
**Author:** ![system](https://global.discourse-cdn.com/cartalk/original/3X/1/d/1d47c66a543aa6c5a7873bb2320858f978ff52ed.png) [@system](https://community.cartalk.com/u/system)\ **Post date:** [July 28, 2011, 11:43pm UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637/4 "2011-07-28T23:43:16Z")
I can’t seem to find an exploded view, but if memory serves me right there is a wheel attached to the crankshaft that the crank sensor gets its pulses from. Pull the sensor back out and stick a finger in and see if you can move that wheel. If you can move it any at all, I would have to say you’ve found your culprit. ---
**Author:** ![96gmcjimmy](https://avatars.discourse-cdn.com/v4/letter/9/ee7513/32.png) [@96gmcjimmy](https://community.cartalk.com/u/96gmcjimmy)\ **Post date:** [July 30, 2011, 6:13pm UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637/5 "2011-07-30T18:13:59Z")
thnx pete I have pulled out the sensor before but never knew to check that wheel. I am buying a new distributor today. I broke the part that holds the cap down so I now the whole ignition system will be brand new. ---
**Author:** ![96gmcjimmy](https://avatars.discourse-cdn.com/v4/letter/9/ee7513/32.png) [@96gmcjimmy](https://community.cartalk.com/u/96gmcjimmy)\ **Post date:** [August 1, 2011, 7:34pm UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637/6 "2011-08-01T19:34:57Z")
I got home to findout that that wheel you talking about is a trigger wheel and that my vehicle does not have one. It operates directly off of the crankshaft. I went ahead and just replaced the distributor and when I get it timed I will repost and let you know my results. ---
**Author:** ![system](https://global.discourse-cdn.com/cartalk/original/3X/1/d/1d47c66a543aa6c5a7873bb2320858f978ff52ed.png) [@system](https://community.cartalk.com/u/system)\ **Post date:** [August 2, 2011, 9:31pm UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637/7 "2011-08-02T21:31:00Z")
Actually your engine does have what is called a “target wheel”. It’s mounted on the crankshaft between the balancer and the crank gear for the timing chain. It’s not made as part of the crankshaft. ---
**Author:** ![96gmcjimmy](https://avatars.discourse-cdn.com/v4/letter/9/ee7513/32.png) [@96gmcjimmy](https://community.cartalk.com/u/96gmcjimmy)\ **Post date:** [August 10, 2011, 6:09pm UTC](https://community.cartalk.com/t/96-gmc-jimmy-4dr/66637/8 "2011-08-10T18:09:01Z")
well as far as i could tell when i took out the sensor, there was nothing there but the crankshaft.