No fuel why?

[motoman358]

Ok put in a new built motor in my GVR4 and got everything hooked up now and it turns over great and getting great spark. But the injetors arnt pulsing, it is getting fuel to the rail but not out the injetors. I have tryed different resistors packs and still no luck. Does anyone have a idea what the problem is or any ideas on what I can also try doing? Please let me know. Thanks

 

[Old Mitsu Tech]

If you are getting spark and no fuel, then it's an injector drive problem. This comes directly from the PCM. See if you have 12 volts to the injectors with the key on engine off. KOEO. If you do, hook your test light to the positive post and probe the "other" injector wire and see if it flashes while cranking. Steady or no light means injector drive circuit is not funcioning properly. I think these have the same caps as the Eclipses and such and are prone to leak and kill the board. Injector drive is one of the things that goes when they leak.

Good Luck

 

[steve]

The circuit board is identical between the USDM GVR4 ECU and a 91+ DSM ECU and have the same set of problems. The difference between the two is the software.

Steve

 

[motoman358]

to old mitsu tech i had the caps replaced and everything has been working fine. I pulled my car in a month ago to swap out engines and installed dsmlink and now i have the fuel problem. the only thing i did with the ecu during the swap was the dsmlink.