no fire- not the cps

[salvation999sps]

ok guys i have a 93 atx and i have no fire, at first, i thought it might be the cps but now i know that my tack is turning when i try to start it , also i tryed another ignition modual with a ground wire so i know its not the ground bolt or the grey box on the intake... so this leaves me with the coil and the eec modual....by buddy unhooked my battery so i have no codes to go by...any ideas.... thanks of any help
oh and it was running fine until it just died at a stop.. plus it is getting fuel to the fuel rail

<small>[ February 03, 2004, 05:38 PM: Message edited by: salvation999sps ]</small>

 

[twr]

salvation999sps:
ok guys i have a 93 atx and i have no fire, at first, i thought it might be the cps but now i know that my tack is turning when i try to start it , also i tryed another ignition modual with a ground wire so i know its not the ground bolt or the grey box on the intake... so this leaves me with the coil and the eec modual....by buddy unhooked my battery so i have no codes to go by...any ideas.... thanks of any help
oh and it was running fine until it just died at a stop.. plus it is getting fuel to the fuel rail

Well, I've seen a bad CPS give a tach signal and still not fire, FWIW. I would rule out that yet. Does the EEC return any codes at all - it should give you a 111, which means no stored codes.

 

[salvation999sps]

i will try running them again tomorrow and find out, can you run the codes with out a code scanner, i know on my truck i can run a jummper wire and the codes will flash out on the check engine light... will this work on the sho

 

[Chris Benvie]

salvation999sps:
i will try running them again tomorrow and find out, can you run the codes with out a code scanner, i know on my truck i can run a jummper wire and the codes will flash out on the check engine light... will this work on the sho

yes you can check out SHOtimes.com on how to read this

 

[hanshua]

just double checking... did you pull a plug, and ground it and check while cranking to see if you are actually getting spark... if not... check that, and if you do have that... check to see if you have fuel pressure....

 

[salvation999sps]

ok guys the sho will not go into self test mode...it wont give me any codes at all...no clicking of relays or anything....when you turn the key on all the gauges and lights work and fuel pump comes on and the engin will crank the tack moves and but no fire at the plugs...and when you try and run the codes it will not start testing i tried a coupel of times the light on the code scaner just stays on....and you cant hear the relays clicking or even acting like the self test is taking place....? any ideas

 

[FBG]

I just had a bad CPS on my '95 ATX, and the 211 code was not thrown until the third time that the car died. The tach continued to work the entire time--it would come up while cranking, but there was no spark, etc.

If you're having problems checking the codes using a code scanner, you might want to just try the wire jumper and engine check light. But, reading your first post, if you've had the battery disconnected long enough to clear your codes, the CPS code won't be in memory. You can check the CPS directly, by backprobing the CPS harness with a Digital Multimeter with the ignition in the run position and turning the crank clockwise with a 19mm socket. (Don't use an analog meter!) The output voltage should switch up or down every 60 or so degrees that the crank is turned. RanjerJ had a great post about testing each component of the DIS system and goes into more detail about the CPS check, it's in the archives.

Good Luck!

Mike

 

[salvation999sps]

thank you i will try checking the cps,,,

 

[munkee]

Try checking the codes using the jumper method. If the ecm won't test and the ce light just stays on then the ecm is probably bad. I had this problem last year. Swapped ecm's and fired right up.