Stall when coming to a stop
Thread Starter
Teching In
Joined: May 2020
Posts: 3
Likes: 0
Stall when coming to a stop 67 Nova swapped in a 2003 LQ4 / 4L85E.
Finishing the build and took it out for a test drive. Coming to a stop or slowing to make a right hand it stalled out on me. had to tap the gas to keep it running
I noticed when I had to move it around the garage before and tapped the gas it did it once or twice too.
Attached my tune from VCM.
Any ideas what might be causing the stall out???
Finishing the build and took it out for a test drive. Coming to a stop or slowing to make a right hand it stalled out on me. had to tap the gas to keep it running
I noticed when I had to move it around the garage before and tapped the gas it did it once or twice too.
Attached my tune from VCM.
Any ideas what might be causing the stall out???
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
An idle of 575 with even a modest performance cam is very low. Try increasing anything under 650 to 650.
If your VE table is stock too, we may have to tweak that a bit too.
BTW - I deleted your two duplicate posts. NP.
If your VE table is stock too, we may have to tweak that a bit too.
BTW - I deleted your two duplicate posts. NP.
TECH Regular
Joined: Nov 2018
Posts: 467
Likes: 116
It's hard to give good answers without a scan where it stalls a couple times. Need to see things like idle motor counts, the over/under speed of the idle, etc...
But from looking at the tune...I don't think the throttle cracker functions right when its engage and disengage speed are set to the same number. Try setting the disable speed to 3mph and leave the enable at 2mph and see if that doesn't help.
But from looking at the tune...I don't think the throttle cracker functions right when its engage and disengage speed are set to the same number. Try setting the disable speed to 3mph and leave the enable at 2mph and see if that doesn't help.
Trending Topics
TECH Regular
Joined: Nov 2018
Posts: 467
Likes: 116
Try the change to the throttle cracker i mentioned before too. That solved this same issue for mine. I had my tune loaded for me before I started because I was new to Hptuners. The throttle cracker disable was set to 2mph as was the enable speed and it wasn't functioning at all. I looked up a stock tune and the stock tune had the disable set to 3mph and the enable to 2mph. I set the disable to 3mph and it started working. You can hear the engine rev up about 200 rpm the instant the scanner says 2mph as you come to a stop. That was all it took for me.
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
