Complete loss of power during acceleration
Thread Starter
TECH Apprentice
Joined: Oct 2016
Posts: 321
Likes: 30
From: Massachusetts
Complete loss of power during acceleration Not sure where else to post this. I figure I'd put it in here. Not sure this is relevant, but I just installed a supercharger and did various work on the car (intake manifold gaskets, etc.) Three times during acceleration, the car just completely cut power. I wasn't getting any throttle response, etc. Switching gears seems to "jump start" the car and I regain power, but lose it fairly soon. After 5 or so seconds, I'm able to get it back. I am baffled. I believe I have a loose connection or an arc and during acceleration things move around. I'm an absolute dunce when it comes to electrical and pcm. I have tried to find any loose or frayed wiring. Nothing so far. Battery terminals are on tight. Could a failing alternator do this? I highly doubt it because wouldn't a battery give it some juice for a while?
Has only happened under medium to heavy load. So far at least.
Has only happened under medium to heavy load. So far at least.
Last edited by 2001ws6ft; Jul 16, 2021 at 07:14 PM.
Thread Starter
TECH Apprentice
Joined: Oct 2016
Posts: 321
Likes: 30
From: Massachusetts
Yes if DBC means drive by cable. I got a tps low voltage code. I had just replaced the a tps sensor too so i'm guessing it's a bad connection/connector somewhere. Not sure what to do. Try a pigtail and hope the issue is in the connector? Would a malfuctioning tps create this issue? I did do a datalog and saw that once that happens to me the absolute tps was reading 0.
Last edited by 2001ws6ft; Jul 16, 2021 at 09:03 PM.
Thread Starter
TECH Apprentice
Joined: Oct 2016
Posts: 321
Likes: 30
From: Massachusetts
Yeah. That's what I'm thinking. The fact that it has only done it to me on medium or heavy acceleration........Either means that somethings moving around OR the damaged wires can't handle the extra draw.......I don't know. I hate electrical stuff.
Thread Starter
TECH Apprentice
Joined: Oct 2016
Posts: 321
Likes: 30
From: Massachusetts
how far fetched would a weak/dying alternator be the cause? Car regains power briefly by shifting to other gear. Remains this way for 5 to 10 seconds. I also have a racetronix hotwire fuel pump hooked on the alternator.
TECH Senior Member
Joined: Jun 2016
Posts: 22,293
Likes: 3,617
From: Central Cal.
The battery would stabilize the voltage. You might load test the alternator to see if it is good anyway, but if it's cutting in and out it would just charge the battery sporadically.
Trending Topics
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
