Engine nearly stalls shifting in reverse
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
Engine nearly stalls shifting in reverse
Lately, the idle speed on my '82 vette drops to where the engine almost stalls when I shift into reverse after starting her up in the morning. It would start at 1500-2000 rpm and drops to 450-500 rpm when I shift into reverse and nearly stalls. I'd have to give it some gas to prevent the stall. It's never done this in the past. What's causing this?
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
your timing is screwed up..........look to see if the shaft in the distributor is turning freely, look to see if the vacuum can is still connected and working properly...perhaps the hose going to the vacuum can became stretched or disconnected...start at the vacuum cannister
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
Instructor
Joined: Jan 2007
Posts: 167
Likes: 0
From: Provo Utah
your timing is screwed up..........look to see if the shaft in the distributor is turning freely, look to see if the vacuum can is still connected and working properly...perhaps the hose going to the vacuum can became stretched or disconnected...start at the vacuum cannister
same problem with my 82'. my vaccuum is all screwed up, i have to manually unplug/plug the vaccum line to open and shut the lights
. When vaccuum is unplugged i need to give a lil more gas so it doesnt stall. my timing is also off and it does the same thing...check timing, should fix the problem.
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
your timing is screwed up..........look to see if the shaft in the distributor is turning freely, look to see if the vacuum can is still connected and working properly...perhaps the hose going to the vacuum can became stretched or disconnected...start at the vacuum cannister
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
same problem with my 82'. my vaccuum is all screwed up, i have to manually unplug/plug the vaccum line to open and shut the lights . When vaccuum is unplugged i need to give a lil more gas so it doesnt stall. my timing is also off and it does the same thing...check timing, should fix the problem.
Race Director
Joined: Jul 2004
Posts: 12,706
Likes: 329
From: Scottsdale Arizona
You're right. No vacuum canister on these if stock. This is almost certainly something to do with your TBI system. Does it improve if you let it completely warm up first? It hasn't been that cold around here lately, but certainly cold enough so that it will take a little time to warm to operating temperature.
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Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
You're right. No vacuum canister on these if stock. This is almost certainly something to do with your TBI system. Does it improve if you let it completely warm up first? It hasn't been that cold around here lately, but certainly cold enough so that it will take a little time to warm to operating temperature.
Race Director
Joined: Jul 2004
Posts: 12,706
Likes: 329
From: Scottsdale Arizona
No idea. I'm not very familiar with the 82'; only that they share most of the CCC system with the 81's. I know that on 81's, until the computer receives a signal from the temperature sensor that the engine is at operating temperature, it will run full rich and with no spark advance. I would assume something very similar on the 82's. This could be exacerbated by the cool and wet conditions that we've had lately.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
sorry i didn't read carefully enough and didn't realize it was an 82 ( not sure now i missed it).....your torque converter could also be dying
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
No problem. I was just checkin out your vette pics. Is your interior red? Your vette looks like mine except for the model year. I also have spinners on stock rims.
