starting issues in new cherokee
Hey guys, good news, I got a new '98.
Inline 6, Issue is, it won't start. I changed plugs, cap and rotor, wires, Cleaned the grounds in the engine compartment, New battery, new terminal heads, New coil, Still no spark... What do I check next, where and how. Any help is appreciated. |
Check all fuses and relays. Also check out you CPS make sure that isn't bad or the wires to it aren't bad or melted from touching the exhaust manifold.
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I checked and double checked the fuses, I even cleaned them.
I rotated the relays, using them in multiple positions, all work. What's a CPS? And, if you would, were is it and what does it look like? Thanks. |
Scratch that, I just googled cps,
I checked the crank position sensor, unplugged the wire, tested for continuity on all three prongs and had none. Was that right? Next thing to check? |
Test this way....http://www.jeepforum.com/forum/f11/c...-maybe-889010/
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Thanks man, VERY helpful.
My gas guage has been acting funny, surprising it could be that... I'll check it and post u. |
Very common to have issues with dash fuel gauge and voltage gauge when you have a bad crank sensor. Crank sensor failure is a VERY common problem on the Jeep 4.0 engine.
Odds are quite high this is your problem. However, I have found testing to not always be conclusive. If you replace, do yourself a huge favor and buy a Mopar crank sensor directly from Jeep. Aftermarket crank sensors are very "hit and miss" with a whole lot of miss. |
Originally Posted by tjwalker
(Post 2622033)
Odds are quite high this is your problem. However, I have found testing to not always be conclusive. If you replace, do yourself a huge favor and buy a Mopar crank sensor directly from Jeep.
Aftermarket crank sensors are very "hit and miss" with a whole lot of miss. |
I've been reading that a lot, that the knockoffs are prone to not working. I'll swing by the dealership for a mopar replacement this weekend and post how I goes.
This is like Christmas! New Jeep and all; right down to the part about being broke when it's all done and paying your credit cards off for the next 6 months! |
K guys, I changed the cps. It started rght up.
Me and my girl got in it for our "maiden voyage..." We drove about a mile and a half down our road. It died again... My question: does the housing that the cps screws onto/into need to be scrubbed clean? Also, my gas gauge now works. Are there any grounds in this area for these sensors? I cleaned a bunch of them already. Thanks! |
K guys, new update:
I changed the cps I bought at autozone for a mopar direct. Origionally, they didn't have 1 and needed to order it. She still wouldn't restart. {I figured the o'riley special was just defective}. I started doing more research everywhere, and came up with absolutely NO reason why she shouldn't have spark... so, I went old-school. I kept turning it over, and pullin/pushing/wiggling wiring harnesses and connectors. Turns out the connector and wire to the coil were loose and wiggley, and when I repositioned it, wha-la! she started right up. I electrical taped the wires/plug in place to make sure it doesn't work loose again. Thanks for the help! Y'all are good guys/gals! |
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