2001 Cherokee gremlins, Wont start...

[tedzbug]

I have a 2001 cherokee with the 4.0l I6, I have a gremlin or two i think... It all started with the heater blower resistor, then the blower......

It had a intermittent starting issue where it wouldn't start on the first try, but always on the second.... What is that?

I replaced the crankshaft position sensor.... Still starts the same.....

Then the water pump went out last week, replaced it, still leaks....

parked it before christmas so i could fix it yesterday.... NOW IT WONT START.

sorry for yelling, its driving me crazy... I just wasted $45 on a Cam position sensor that did not fix the problem. Merry Christmas.

So now, i am back at square one, No start. What next?

btw, no codes after the "hold odometer and turn key" procedure....

Please help a guy out....

[tedzbug]

going to run to autozone and rent a code reader.......

[fredjacksonsan]

Post back with the reader codes.

When starting, do you turn the key on and let the fuel pump run for a second or two before trying to start?

Has the temperature dropped recently? If it has, and your spark plugs haven't been changed for more than 30k, that can cause hard starting.

[tedzbug]

Codes as follows:

P0118 - Engine coolant temp circuit high input

P0113 - IAT sensor circuit high input



Ok..... now what? Both sensors bad?

[fredjacksonsan]

I googled both of your codes. Seems that usually it's a bad wire, or the sensors could be bad. I'd check the wiring for each, making sure there's no breaks or gaps, and that any connector plugs are connected properly and not corroded.

I also saw a post indicating the computer could be at fault, but wiring is more likely.

[tedzbug]

I get that it could be a bad connection..... but I don't think either would cause a no start condition.....

starting to think the pcm.....

[tedzbug]

Pressure at the fuel rail : Check

Now to figure out how to test the crank position sensor I just put in......

[tedzbug]

Success!!

The CPS I put in a couple months ago failed. Put the old one back in and up she runs...

Now to find the water leak....

Thanks for helping out

[fredjacksonsan]

Sure thing...plenty of threads on here where an aftermarket CPS failed shortly after being installed.