04 Grand Cherokee 4.0L

[KLMudge]

I have replaced the crankshaft position sensor, camshaft position sensor, coil strip, asd relay n fuse, checked fuel all is good there. But still won’t start and have no spark, I’m stumped and don’t know what else to do.

 

[TerryMason]

Does it give you any codes?

 

[KLMudge]

Nothing


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[ndnatty]

Did you check the neutral safety switch?


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[KLMudge]

No I haven’t how do I does so?


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[KLMudge]

But it shouldn’t be the neutral safety switch because it cranks over in park and neutral I just don’t have spark....


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[KLMudge]

My scanner didn’t pick up any codes but, I used the method of turning my key on 3x and got p1388, p0320, p1490, p1489.


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[JPNinPA]

First check your battery. Get it load tested. Then clean terminals and grounds. They cause weird issues and codes.
Was the CKP OEM that makes a difference?
P1388 ASD relay. Worth swapping with the horn to see if that is it.
p320 cKP sensor maybe bad out of the box. Be sure new has a spacer. Otherwise it could crack on first start if inserted too far.
P1489 and P1490 are cooling fan speed errors.


Never look down on anyone unless you are helping them up - Jesse Jackson

 

[KLMudge]

Had the battery checked already.
An the CKP was an oem replacement.
I put a brand new asd relay in.
Already double checked the CKP.
And don’t know about the cooling fan errors.


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[JPNinPA]

Does this have a security system?


Regards,
JPNinPA

Never look down on anybody unless you're helping them up. -Jesse Jackson

 

[KLMudge]

A factory one yes, I just ordered a new pcm for it today


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[JPNinPA]

If I recall there is a way to reset the sentry system if that is the issue. First you are using stock keys. Correct?
I'll have to dig a bit to find the process steps.


Regards,
JPNinPA

Never look down on anybody unless you're helping them up. -Jesse Jackson

 

[KLMudge]

Alrighty so my new pcm came in today and I got it all put in but still no spark I’m at a lost cause now.


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[mark sr]

Double check all your electrical connections. I was stumped yrs ago with my 76 F100 4x4. I had a short section of the wire harness that checked good when you put the probes on it but was dead when you took the probe off. I had replaced most of the ignition components before I discovered those wires were bad [I had checked it multiple times]

 

[KLMudge]

Already I’m currently doin this and noticed that there is what looks like a relay bolted to the side of my block and, idk what it is


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[KLMudge]

This is what I’m talking about


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[KLMudge]

Nvm I found out that is the ignition capacitor could that be my problem?


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[KLMudge]

Update changed the pickup and the ignition capacitor still nothing


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