Help no crank no start

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08-03-2018, 02:50 PM

Danny Saxon

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Model: Cherokee (XJ)

Help no crank no start

So I have replaced the cps twice went Amazon cheap then went to O'Reillys spent 90 bucks still no start... the today I found this... would the connector from the oil sending unit mske my jeep not start? My jeep is a 2000 Cherokee limited 4x4 4.0

Last edited by Danny Saxon; 08-03-2018 at 03:17 PM. Reason: Forgot year make and model

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08-03-2018, 03:32 PM

Sota

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I believe that’s just for your oil gauge to read pressure. If it’s not working your gauge won’t work. And I believe you would get a CEL because it thinks there is no pressure. That shouldn’t cause you to have a no start situation.

Will it do anything when you turn the key or is it completely dead?

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08-03-2018, 03:46 PM

Danny Saxon

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Model: Cherokee (XJ)

It just cranks and cranks but never catches and starts

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08-03-2018, 03:48 PM

Danny Saxon

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Also I keep getting idle air control code I think p0505 I also cleaned the iac with mass air flow cleaner.

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08-03-2018, 04:10 PM

PatHenry

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Year: 1995

Model: Cherokee(XJ)

Engine: I6 4.0L

Your CPS is still suspect if it's not a Mopar. Also the wiring for the CPS should be checked since it may look like the wiring for the oil sender - in which case it definitely would cause your problem.

If the CPS seems good, I'd proceed with the standard crank no start diagnostics - check for fuel, spark.

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08-03-2018, 04:15 PM

Danny Saxon

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I did all of that getting fuel and I just ordered plugs and the connector for the oil. The cps connection is good on the other side of the jeep. It makes spark just doesn't start...

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08-04-2018, 05:19 PM

97grand4.0

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Year: 1997

Model: Grand Cherokee (ZJ)

Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims

Ok so OP you say you replaced the CPS twice,..why? was it cranking and not starting? What were the symptoms that made you change the CPS? I assume you mean crank sensor and not cam sensor?? MOPAR ONLY on the cps and ckps. , Stronger magnet. We all been there.
A digital volt meter is a big help here. Almost sounds like you have problems with several sensors which would lead me to check the bias voltage on them and then check the schematic, which will lead you to any breaks in the wiring harness.