Trying to get this fitech system running but keeps reading no rpms on the handheld and no start. The key wire has over 11 volts when cranking which is sufficient and fuel pump primes just fine. Distributor, icm and coil are all new and have sufficient voltage from coil to distributor. Grounds are all good. Car ran fine before dropping in this harness. I'm stumped on this. If anyone has experience with this system and has an idea why this isn't working please let me know

 

Try your old distributor, seems like an ICM problem.

 

Are you using the Fitech to control timing or using a conventional distributor?

 

Fitech system utilizes the oem small cap distributor and controls the timing

 

If you are using the Fitech for timing control you need to remove the control module from the distributor. Its only purpose will be for the magnetic pickup, the Fitech ECM has a built in coil driver. I used a MSD GM HEI module bypass cable (p/n 8861) and a gutted small cap HEI on my '92 with Fitech.

 

I had no issues with the install. Car fired right up. I would honestly double check your connections. Especially around the distributor area.

 

Your running fitech ultimate tpi? My fitech tpi harness plugs directly to the icm on the distributor and has the est connection attached to that for timing

 

This is not in the instructions for Ultimate TPI; you must have retrofitted an older distributor.

The 87-93 small cap divorced coil distributor with the 8 pin module is the spec distributor for the system and plugs in with no modification.

 

This is installed on my 89 formula 350. So yeah I'm working with the small cap distributor.

 

Did you splice into a +12v source that doesn't provide power to the distributor during cranking? I suspect it's an issue with the custom wiring part of the operation.

 

I left the pink and white wire alone that's plugged into the coil and ran the key wire from the harness to its on relay. So it's got good voltage while cranking. I've triple checked everything cacar ran fine before this. My original harness is still in place so i think I'm going to plug all that back in like it was and it should right up. I suspect a bad unit out of the box

 

Ok well the beast just fired right back up and runs fine with the original harness. Not sure whether I should warranty this fitech or attemp to get my money back. Are you guys happy with your fitech system and think it's a good reliable system?

 

Got over 2 years and 13k miles on mine, never had an issue other than a bogus CTS connector that would push out a pin when connected. I spliced the factory one on and that was it.

 

I had a brand new distributor out of the box that wouldn’t let the fitech system work. RPM reading was not there or erratic trying to start up. Swapped in a used GM one and it worked. Ended up sending the new distributor back to DUI to repair or replace. Replacement worked.

 

Well that's good to know. I'm also running a new dui distributor but with a new gm icm. I sent the fitech back waiting on them to tell me something. Was yours running fine with the dui distributor before the fitech swap?