No start issue for seasoned DSMers

[DroopYeyeS]

I'm trying to get my '91 up & running. I have a no start situation that I have been looking into as of late. Compression could be better(pretty sure I need a head gasket), but it should still start. My issue is this, I have no spark or fuel pump, yet the tach is working . This is directed to some of you with a little more experience with the electronic end of these cars. Do you think I need a new MPI relay or the CAS sensor? I'm no newb to these cars, but this is my first personal DSM, and I don't have a service manual yet. Your help is appreciated.

 

[EagleTalonTim]

I would first check the Coil Pack and Injector Resistor pack. I had a loose connection on one of the wires that caused the exact same symptoms you are having. It may also be your MPI relay. If you can get a hold of a working one, test it out.

 

[drewvr4]

get a mechanic

 

[DroopYeyeS]

I am a mechanic, but without the manual I can't trace the wire diagram can I. I don't think the coil or ignitor chip will cause the fuel pump to not cycle while cranking the motor(could be wrong).

 

[spooln4fun]

Not trying to put you down or anything, but have you checked to make sure the fuel pump fuse isn't blown? Just a short tip before going all out on something that could be a fuse

 

[kenamond]

If you plan on working on DSMs enough to justify $50, I'd recommend getting the shop manual. The link below is where you can get the CD for all DSMs. It's $50 shipped.

http://store.forcedperformance.net/...ode=FP&Product_Code=CD&Category_Code=DSM-Misc

 

[DroopYeyeS]

No put down at all spool, legit point to make, yes I checked the fuses, . Thank you for that link kenamond. I've checked it out before, but was not to sure about it after experiences with other "manual cds". It seems there are a few people on here that use that cd and like it though. Think I'll check it out. I aslo checked the coil and ignitor chip Tim, they checked out ok. thanks for the extra lead though.

 

[TALONTRAX]

I`ve seen blown caps on the ecu board cause the no spark & no fuel pump symptoms. Pull the ecu & check it out, but still invest in a Haynes manual for your car !!

 

[DroopYeyeS]

Yeah, the ECU was the first suspect. Replaced it and now have moved onto either a CAS or MPI relay issue. Thanks for imput