Urgent: No fuel pump

[winterbeater]

So do you have the 12 V going in to the injectors?

 

[97XJ2]

Its gotta be an injector issue. I haven't done anything to the Crank Position Sensor, just the Cam Position Sensor. I am done F*ing with this thing outdoors when its 5 degrees with a negative windchill.

 

[89RockHeep]

Its gotta be an injector issue. I haven't done anything to the Crank Position Sensor, just the Cam Position Sensor. I am done F*ing with this thing outdoors when its 5 degrees with a negative windchill.

just go test the cps(crank) real fast.i didnt read all of it, did you have spark?

 

[97XJ2]

I need to borrow my friends multimeter again, so set it to ohms and read across the pos and neg for the sensor? The multimeter sends out the signal for that? Sorry but electronics are really not my thing. Yes there was spark.

 

[Pelican]

Here is a current thread that tells how to test the CPS. I don't personally know if this is the correct way but no one has disagreed so far. http://www.naxja.org/forum/showthread.php?t=985456

The meter doesn't send out a signal. It does have an internal battery that is used for resistance (ohms) measurements but does not send out a "signal".

 

[97XJ2]

I read on the CrankPS, saying that maybe I wouldn't get spark (but I have spark) and my battery or voltage gauge may not work (both do), what are the proper pins on the CPS to test across? There are three. Just checking before I spend money on the sensor, and extensions for my ratchet.

 

[winterbeater]

Bad CPS = No spark. Converse assumption is Good spark = Good CPS. Do you have 12 volts at the injectors? If you pull a spark plug is it dry?

 

[97XJ2]

As I had stated before, I have spark, and the plugs are dry. Would 12V be present at the injectors in the "Run" position or while cranking? And I'm only getting ~50 Ohms across two of the terminals on the cps plug

 

[winterbeater]

Run position should give 12V

 

[97XJ2]

Mmm thought this got posted, but I guess not. The other Jeep that lives at my house CPS' checks good, I need to run back and re borrow the multimeter now, I returned it and forgot to check the injectors

 

[97XJ2]

Absolutely no voltage to the injectors with the key in the run position.

 

[97XJ2]

Pulled the CPS, napa has one. But do I get it?

 

[97XJ2]

Well i got a CPS from the dealership and it runs now, alls well. Thanks for everyone's help!

 

[winterbeater]

Run position should give 12V

Sorry, my error. ASN shuts down in 3 seconds if no CPS signal. Which in turn shuts off 12V to injectors.

Congrats on working through that an fixing your problem. Can any more knowledgable GURUS splain how you get spark without a good Crank Position Sensor?aperwork

 

[winterbeater]

Can any more knowledgable GURUS splain how you get spark without a good Crank Position Sensor?aperwork

 

[97XJ2]

I couldn't tell you but I did get spark! I put 500 miles on this weekend, and it runs great.