Tunerpro RT $4F connection problems

[duecepipes22]

I have no doubt that I would rather go with a good one. I refuse to even buy one from napa, autozone or oreillys. So if I understand what you are saying, the '92 and newer ones will still work perfect for mine?

The delphi one on summit goes for $194. Does pmkls1 think the GM performance part one would be better than a delphi?

By the way, you guys on here rock and have helped me out way more than I could have imagined!

I also just noticed that the GMPP distributor says it has a steel gear for roller lifter cams. I don't have roller cam, will that still work?

[EagleMark]

Pretty much all yes! The only difference is the EST, which looks identical, but old one pulled three degrees timing after 3000 RPM, GM used the new one when ever needed and never looked back. IIRC number on new one is 048 and old one 069, if you didn't know you'd never notice, by this point in time it may even have a new number. Don't worry about it.

The cam gear for roller cam is melonized and excellent replacement for flat lifter cam, this was just discussed in another thead. Better choice. for all.

I wonder if the Delphi and GM performance are the same thing? Same part number?

[duecepipes22]

Great to hear all that! Sorry you had to pretty much retype the same stuff for me to understand. Summit has both the delphi and the GMPP, listed as separate parts. The delphi is part number cz20001 and the GMPP is 110-3952. Summit has the delphi for $184 and the GMPP for $283, so the sdparts.com GMPP is a great deal! I wonder if the GMPP is really that much better.

On a side note, I asked a jack wagon at summit yesterday about the delphi distributor and he said "nope" no way it will work, but he said the GMPP will work. Shows how great of help they are!

[duecepipes22]

Well I ordered the GMPP distributor and got it installed... truck won't run! It started at first but chugged a lot so I tried rotating the distributor and now it won't run at all and twice I had a flame shoot out of my throttle body! I think its safe to assume that my timing is way off, but is it safe to unplug my timing wire right now to try to get the timing back down to 0 or could it be so far off that I could blow the thing if the timing is too far advanced?

I don't know if I managed to put the distributor in one tooth off or what???

[duecepipes22]

Nevermind that! I got it running. I think the problem was that it was so flooded from the timing being off. I unplugged the injectors, turned it over for a bit, plugged them in, adjusted the timing a bit and it fired up!

Something I noticed though was that while I had it running with the timing wire unplugged and timing at 0* there would be an occasional flicker in the timing and a quick sputter of the engine... its a brand new dizzy, could it be the coil cutting out? Also, is about 22* at idle about normal?

[EagleMark]

22 is OK at idle, something else id wrong if you see a flicker in timing light and stitter of engine?

[duecepipes22]

Do you think it would be the coil? Theres nothing else along the way with the ignition and it does it with the wire unplugged so its not like it can be anything with the computer or sensors, right?

It sits perfectly still at 0* and every 5-10 seconds it will flicker about 10 degrees.