BALDSLUG

I hope you can help. My 2000 Jeep Cherokee just recently has a new battery and alternator. While driving, my check engine light came on. The next day the car would not start. It is cranking but wont start. After trying to start it multiple times the battery started getting a little low so I tryed to jump start it. Same result, crank but no start. I have read CPS sensor failure is common and this is the direction Im leaning. Any help would be appreciated

Jooman07

Get your hands on a code reader and see what the engine light came on for.

Jooman07

most places like autozone usually have them available to rent. if you dont have a buddy that has one.

Roler

A check engine light (CEL) that is on, is usually a very good starting point in trouble shooting.

But to give you a general idea iwth no starts (in your case a crank-but-no-start)
You need to determine of you have "no spark" or "no fuel" (or even both) leading to your no start. Diagnostics will lead the way...

But first: have the CEL read and report back what kind of code(s) they give you

BALDSLUG

Thnaks JOOMAN I'll do that this afternoon. I know everything depends on the code given as error but in order to have a plan B readily available are their any common causes for these symptoms?

BALDSLUG

Thanks Roler, as far as spark and fuel, I have not checked for spark but I do hear the fuel pump primer come on when I turn the ignition

Roler

That means nothing more than that the fuel pump gets power and is 'working' in response... However, not how well it's working: fuel pressure is checked at the fuel rail, with a gauge.

BALDSLUG

gotcha. I guess Ill start with the code and go from there.

BALDSLUG

0 dtc. The code reader says 0dtc. I/m monitor status shows m, f, cc. C, O and OH are blinking. I did have a blown auxiliary fuse blown and replaced that but still no start, not even with a jump. Any ideas?

BALDSLUG

check engine wasn't on anymore but won't start. Not even with a jump. It was running fine 2days ago......what to test next?

tjwalker

What was the EXACT code number. With OBD, the devil is in the details.

BALDSLUG

there was no code on the odb scanner.

Jooman07

but.....

BALDSLUG

0 dtc as in zero diagnostic trouble codes. I don't want to start replacing parts without narrowing down the culprit but since I can't get it started, I can't get it to the shop. I guess I could pay for a tow but that just bothers me. I know there's only so much help that can be given over the internet but I'd appreciate any help I can get

Jooman07

Then it's more than likely a fuel or spark problem. Clogged fuel filter, low fuel pressure, bad plugs, bad plug wire, cap and/or rotor may need replaced. etc...