OPTI pigtail bad??
Thread Starter
Teching In
Joined: Nov 2007
Posts: 37
Likes: 0
From: Jonesboro, Arkansas
OPTI pigtail bad?? I have a 97 LT1 in a chevelle. I have replaced the opti, coil, crank sensor, PCM, plug and wires. Not sure what else to do. Had the computer tuned and it is showing P0336 (crank sensor), P1331. It was showing crank codes before I replaced the computer. Replaced the sensor still showing code. Need major help.
sounds like the pigtail to me, I had a similar problem, replaced the coil and the crank sensor hoping it would fix it, but then I used that as an excuse to buy a MSD opti and that worked since it just replaces that whole harness.
you can find cheap delphi pigtails on ebay or check on summit
you can find cheap delphi pigtails on ebay or check on summit
Thread Starter
Teching In
Joined: Nov 2007
Posts: 37
Likes: 0
From: Jonesboro, Arkansas
The opti pigtail is the long slender plug that plugs into the top passenger side of the opti. I have heard that this can cause problems like the one I am having. I am not sure what else to change. I have changed just about everything electrical. I have a S&P harness. The opti pigtail was the only thing I used off the old wiring harness.
On The Tree
Joined: Nov 2007
Posts: 130
Likes: 0
LT1 , the P0336 indicates the crankshaft position pulses (CPS) and the Camshaft position pulses (OPTI low resolution signal) are out of synchronization a missing or crappy signal from either would cause the problem, or a bad timing chain, etc. Also a missing opti low res may also throw a P0323 or P1371 and cause some performance issues. You OP listed a P1331 are you sure of that one ? If you are looking for a harness this is a fairly new source.. http://www.lsxtune.com/shop/product_...roducts_id/928 good price, never tried the product so can not give any review...
Trending Topics
Thread Starter
Teching In
Joined: Nov 2007
Posts: 37
Likes: 0
From: Jonesboro, Arkansas
I believe it was a P1371. I know that I did have a bent female end in the opti plug. I straightend it out but beginning to think that may be haunting me. The motor has less than 90,000 on it.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
