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Old 11-10-2013, 03:10 PM
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car won't start

i'm having a problem with my 2005 jeep grand Cherokee. it is having a had time starting up and sometimes it won't even start at all. it will crank but nothing else. do you know what will cause this
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Old 11-10-2013, 03:18 PM
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Re: car won't start

Normally lack of fuel or lack of spark. You need to check for any fault code set first.
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Old 11-10-2013, 03:25 PM
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Re: car won't start

also I have a comp cam in the jeep would that cause it to have any problems
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Old 11-10-2013, 06:54 PM
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Re: car won't start

Quote:
Originally Posted by chriscampbell3325 View Post
also I have a comp cam in the jeep would that cause it to have any problems
What is a comp cam
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Old 11-10-2013, 07:02 PM
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Performance camshaft
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Old 11-10-2013, 07:10 PM
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Re: car won't start

If it was running ok before with this cam, then it should not be the problem.
If it finally starts, does it run normally?
Does the problem occur at every start, or only cold starts/hot starts?
Does the WK show the fault codes doing the key dance? (ignition switch off/run three times and leave in run at the third time. The odometer will show DONE or any fault code(s)).
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Old 11-10-2013, 07:18 PM
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It worked fine for a while and than it started having problems with starting up have to give it some gas at times for it to start and now whatever that caused it to have problems finally just gave out it cranks up but doesn't start and my mechanics been working on it and I won't find out wat the problem is until tomorrow
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Old 11-10-2013, 09:17 PM
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Re: car won't start

Quote:
Originally Posted by Frango100 View Post
What is a comp cam
Frank, it's an aftermarket higher lift/longer duration camshaft that is suppose to increase performance and maybe economy.....if you can keep your foot out of it. I have a FRI Engineering (made by Comp. Cams) cam in mine and it's worth about 50 hp. and a mile or so increase in fuel economy.

Chris, if it's been working fine with the cam, as Frank said, this is probably not your problem. Do you know what all they changed....cam, pushrods, valve springs, timing set, etc.....and what they put in? As Frank said, usually a no start is caused by lack of fuel and/or ignition (either not at all or occurring at the wrong time), but on the newer computer controlled engines it could also be other things, like a cam or crank position sensor, or ?
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Old 11-10-2013, 09:32 PM
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I believed they changed everything when the cam was installed and the timing and they tuned it with my Diablo as well and installed bulletproof gaskets as well I wont find out wat the problem is until tomorrow or when ever they finish working on it buts weird how everything was working fine until after about a month that's when the problems happened
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Old 11-10-2013, 11:44 PM
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Re: car won't start

The cam sensor is on the timing cover, and if it's not plugged in properly and/or the damaged it during the R and R, that could be the problem. You should be getting some sort of DTC though, if it's a cam/crank sensor. Have you checked using your DS tuner, the key dance, or some other code reader?
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Old 11-11-2013, 03:07 AM
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Re: car won't start

Well I am a big advocator of trying the simplest and cheapest things first, so here is my list of things I would go through. But first, we must understand for an engine to start it needs air, spark, and gas.
First check the air filter, sometimes it can partially get sucked into the tube and out of place which can cause issues starting
Second Take it to your local autoparts store and do an electrical test. They can check alternator, battery, and starter for free.
Third Check the plugs and plug wires with a meter. When they start to go bad they will have trouble producing spark on a cold start. Change if necessary
Fourth check fuel pressure.
If none of the above fixes it, you have a sensor problem.

PS: I doubt it has anything to do with your cam.
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