Problems keeping my Vette running
Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 0
Problems keeping my Vette running
Hello all,
I've seen a lot of great advice on this board and I'm hoping that someone maybe able to help me. I've got a 91 Vette that seems to be having some issues. I start the car and everything is fine for 30-45 seconds. As soon as I put the car in gear it stalls right out. It's putting out this wonderful sulfur/rotten eggs smell. My first thought is blocked catalytic converter.
Can anyone help me with any other ideas or let me know if you think it's the cat.?
Any help is appreciated.
Thanks!
Rich
I've seen a lot of great advice on this board and I'm hoping that someone maybe able to help me. I've got a 91 Vette that seems to be having some issues. I start the car and everything is fine for 30-45 seconds. As soon as I put the car in gear it stalls right out. It's putting out this wonderful sulfur/rotten eggs smell. My first thought is blocked catalytic converter.
Can anyone help me with any other ideas or let me know if you think it's the cat.?
Any help is appreciated.
Thanks!
Rich
Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 0
Can't really say if I'm losing power, it's an automatic and as soon as I shift into gear the car stalls.
Will the converter clear itself out if I keep starting the car? Or am I likely to have to replace it?
Will the converter clear itself out if I keep starting the car? Or am I likely to have to replace it?
Melting Slicks
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
Try removing the O2 sensor. It will set a code for sure, but it will also relieve the backpressure and keep your car running long enough to get it to a muffler shop.
Either that or cut the cat off and then go get a new one put on.
Either that or cut the cat off and then go get a new one put on.
Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 0
Thanks all, I'm more convinced than ever it's the cat. Once the car cools down it will run fine for about 2 minutes, but as soon as everything heats up, it just shuts right down.
Thanks again for the comments, looks like I've got a bad cat. to take care of.
Thanks again for the comments, looks like I've got a bad cat. to take care of.
Pro
Joined: May 2006
Posts: 637
Likes: 0
Engine gets warm and shuts off, if more than two injectors crap out, it will shut off itself.
Check the resistance cold and hot and see if there is a bigger difference than +- 0.5 ohms between all of them and they should at least be higher than 14 ohms (I believe it was).
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Thread Starter
6th Gear
Joined: Jun 2009
Posts: 6
Likes: 0
I would check the injectors too if you haven´t already done that.
Engine gets warm and shuts off, if more than two injectors crap out, it will shut off itself.
Check the resistance cold and hot and see if there is a bigger difference than +- 0.5 ohms between all of them and they should at least be higher than 14 ohms (I believe it was).
Engine gets warm and shuts off, if more than two injectors crap out, it will shut off itself.
Check the resistance cold and hot and see if there is a bigger difference than +- 0.5 ohms between all of them and they should at least be higher than 14 ohms (I believe it was).
Racer
Joined: Jan 2007
Posts: 274
Likes: 0
From: Muskogee OK
It won't hurt to ohm the injectors, since it's relatively quick. If you do have bad ones, the O2 sensor might read lean and the ECM could be dumping too much fuel through the others, possibly giving you the smell.
If you have a low pressure fuel/ vacuum gauge, you can remove the check valves going to the exhaust manifold and check your exhaust back pressure, using the rubber conical attachment. It should be about 1 psi at idle and no more than 3 psi (IIRC) at 2000 rpm. A plugged cat will create a higher back pressure.
If you have a low pressure fuel/ vacuum gauge, you can remove the check valves going to the exhaust manifold and check your exhaust back pressure, using the rubber conical attachment. It should be about 1 psi at idle and no more than 3 psi (IIRC) at 2000 rpm. A plugged cat will create a higher back pressure.