Car is dying when slowing down
Thread Starter
Racer
Joined: Jan 2003
Posts: 279
Likes: 0
From: Indiana
Car is dying when slowing down
My car dies when I'm slowing down after spirited acceleration. It only happens when I engage clutch or put in neutral and let the car slow. If I down shift and keeps the rpms up it seems fine. Does anyone have any ideas?
:confused:
:confused:
Burning Brakes
Joined: Feb 1999
Posts: 1,165
Likes: 1
From: San Jose CA
Re: Car is dying when slowing down (Fish Elvis)
Are you using an aftermarket airfilter which was over oiled?
Most likely, the heated MAF wire has to be cleaned.
Hope this helps
Roger :cheers:
Drifting
Joined: Feb 2000
Posts: 1,882
Likes: 0
From: San Diego CA
Re: Car is dying when slowing down (pdd000)
You also might want to check your entire intake system (from filter to throttle body) to ensure it's seated/sealed properly. Hard deceleration might cause the parts to shift enough to open a bad seat/seal, causing a vacuum pressure loss. I had this happen at the front end of the stock accordian air bridge.
Pete
Pete
Burning Brakes
Joined: Feb 2002
Posts: 1,137
Likes: 2
From: Texas
Re: Car is dying when slowing down (Fish Elvis)
My car did that once and it turned out that I had a vacuum leak. I found one of the intake tube connections had come loose and once reconnected and tightened, it was good to go.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
Burning Brakes
Joined: Sep 1999
Posts: 1,247
Likes: 0
Re: Car is dying when slowing down (Fish Elvis)
This also can be a symptom of a dirty throttle body. Remove it from the manifold, squirt some carb cleaner on a rag and clean the throttle blades on both sides and also the barrels. This is a maintenance item that is often overlooked. HTH
Mike :flag
Mike :flag
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Re: Car is dying when slowing down (Mikie C)
Do you have any storred codes. Mine did the same thing and I had a air leak in the coupler between the MAF and throttle body. I had two DIC codes. MAF low air flow and MAF high air flow , at the same time! :crazy:
Drifting
Joined: Nov 2000
Posts: 1,790
Likes: 0
From: Carrolton TX
Re: Car is dying when slowing down (Fish Elvis)
I had the same problem as well but was able to address it. I found two things that could cause this issue. If your intake is loose and you are taking unmetered air in after the MAF due to a leak it can cause the car to stall at idle. In my case I was tripping a few codes that indicated the O2 sensors were bad. I replaced these and the car no longer stumbles or dies at idle. It would be especially bad after spirited run up. Good luck
