need prom/memcal help
Thread Starter
Advanced
Joined: Aug 2006
Posts: 59
Likes: 0
From: Miami florida
need prom/memcal help
Hi folks I have another thead 1990 won't start...I think I have my problem narrowed down to prom/memcal..does anyone have a resource for reprogramming or replacing prom/memcal..also can anyone provide me with numbers on the memcal, just to compare with mine..I have a 1990!! Thanks
Race Director
Joined: Jun 2004
Posts: 13,966
Likes: 710
From: WI
Thread Starter
Advanced
Joined: Aug 2006
Posts: 59
Likes: 0
From: Miami florida
Symptoms are:
Black smoke/rich
detonates.....no errors
I put in
new ecm, injectors ,cap/ rotor,temp cont sensor, o2 sensor, fuel/fuel filter .
noticed tach only revving to 2500 but engine revs much higher...any help is appreciated!!
Black smoke/rich
detonates.....no errors
I put in
new ecm, injectors ,cap/ rotor,temp cont sensor, o2 sensor, fuel/fuel filter .
noticed tach only revving to 2500 but engine revs much higher...any help is appreciated!!
Race Director
Joined: Jun 2004
Posts: 13,966
Likes: 710
From: WI
These guys might be close to you http://tpiparts.net/home and let you try a chip. They were nice people on the phone.
Thread Starter
Advanced
Joined: Aug 2006
Posts: 59
Likes: 0
From: Miami florida
Yes found a leak and fixed it a couple of days ago, car improved but still way rich , checked all grounds...seemed okay...BTW those folks are nearby...Thanks big time!
Last edited by stifeout; Dec 10, 2007 at 01:47 PM.
Race Director
Joined: Jun 2004
Posts: 13,966
Likes: 710
From: WI
Welcome. Good job on finding the leak. Maybe resetting the computer would help after fixing the leak. The TPS and IAC set right? I found using the field service mode helpful as well. If it was real rich and you fixed it, perhaps the o2 or a plug could be fouled. Just some ideas..
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Thread Starter
Advanced
Joined: Aug 2006
Posts: 59
Likes: 0
From: Miami florida
Thanks AArdwolf,When I found the leak I thought I was home free!! Here's what ive done: compression test, all around 180 lbs, new injectors, tested them with pulse tester, all good, new o2 sensor, new coolant temp sensor, new dist cap ,wires, coil, module, new plugs. TPS okay, IAC I'll have to look up, don't remember what it is.......... new map sensor. Reset computer...No error codes
I'm going to put in a new knock sensor,connection looked good and Hopefully I can borrow an ecm and memcal to test!! Thanks for all the help!!!
I'm going to put in a new knock sensor,connection looked good and Hopefully I can borrow an ecm and memcal to test!! Thanks for all the help!!!
Last edited by stifeout; Dec 10, 2007 at 02:20 PM.
Race Director
Joined: Jun 2004
Posts: 13,966
Likes: 710
From: WI
Thanks AArdwolf,When I found the leak I thought I was home free!! Here's what ive done: compression test, all around 180 lbs, new injectors, tested them with pulse tester, all good, new o2 sensor, new coolant temp sensor, new dist cap ,wires, coil, module, new plugs. TPS okay, IAC I'll have to look up, don't remember what it is.......... new map sensor. Reset computer...No error codes
I'm going to put in a new knock sensor,connection looked good and Hopefully I can borrow an ecm and memcal to test!! Thanks for all the help!!!
I'm going to put in a new knock sensor,connection looked good and Hopefully I can borrow an ecm and memcal to test!! Thanks for all the help!!!
