The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

Please Support Fuel Injector Clinic
Please Support ExtremePSI

Colt won't run

This site may earn a commission from merchant
affiliate links, including eBay, Amazon, and others.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

iamtall77

20+ Year Contributor
185
1
Oct 9, 2002
Las Vegas, Nevada
I bought this 89 Colt GT from a reliable source a little over a month ago. I've spent numerous days just gather little parts I was missing. Now it's all together and it refuses to start. The engine will not turn over while the fuel pump is running, unless I crank it over and then plug in the fuel pump fuse. It still doesn't start. It is wired with a Walboro 255lph.

The MPI relay seems to be clicking every time. I went ahead and hooked up the SAFC (it was setup for one already) in case some wires were messed up. I did find one ground to the ECU that wasn't hooked up. Still won't start.

Put some fuel in the tank just to make sure there was plenty in there. Still won't start. Definitely have fuel and air. Compression looks good and the plugs smell like fuel. Going to have a friend come over and make sure there's spark. The SAFC won't read RPM while cranking over and neither will the tach. Not sure if it's supposed to. The CAS that was in the car had some bad wires, so I swapped in another one and still doesn't give me anything. I also checked to make sure it wasn't out 180.

I'm not sure where else to look. I've hooked up my Palm and MMCD, but it doesn't give me anything I can use. Is there anything other than CEL codes that will give me any idea what's up? I'm at a loss. I'll see if my friend comes up with anything. I really need this running and in road worthy shape by October 28th so I can drive to SEMA.
 
Now I'm getting CEL code 41 for the Injector circuit. I checked the injectors and they click when voltage is applied. I swapped out the injector resistor and still nothing. What else do I need to check?
 
ECU


That RPM thing seems to be a good clue. Sure the wiring to the CAS is good?
 
Not positive about the CAS. Everything seems to be good with it. I will check the wiring from the resistor pack to the injectors to see if I find anything. Not too many other wires I can check according to the crappy Chilton wiring diagram. I also swapped out the ECU to check and see if maybe that was bad. It doesn't seem to be the problem. I'll keep checking.
 
I've basically just narrowed it down to the injectors just not firing. There is resistance between the ECU connections and the injector clips. The MPI relay works, but not sure what else to check for there. The resistor seems to be good. The injectors themselves work and have the proper resistance. The thing just won't run.

I turned the fuel pump on and manually pumped fuel through the injectors with 1.5v and the car ran for about 2 seconds. It seems to run if there's fuel in there. However, the injectors just don't seem to work. What other leads can I follow? What else can I check? What are my alternatives to make it run? I really need some help.
 
Is it a swapped colt? Did it run prior? Check out 4g61t.org as well, it's the colt (CSM) home.
 
Wow! I feel stupid. Turns out I somehow mixed up the connection to the resistor box with the one on the TB. Same plug size, but different color wires. I kept looking at my 91 harnesses I have and they both have multi colored wires from the injectors to the resistor. The 90 style has all red wires. Yes, feel free to pummel me with retard comments.

The car runs, but is in limp mode due to a bad MAF signal. Just another thing I gotta check out. Probably just the wires from the SAFC mixed up or something.
 
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Innovation Products Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Back
Top