cold engine runs terrible
Thread Starter
Intermediate
Joined: Dec 2000
Posts: 27
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From: Belpre,Oh 45714 USA
cold engine runs terrible
I have an 86 that just started running on a few cylinders (feels that way) while
the engine is cold. As the engine approaches operating tempeture, it runs better! After reaching full tempeture.... it is great again. My wife refuses to ride in it till I do something to rectify the problem. Can anyone give me a suggestion to fix. I have had this Vette for several years and never had a serious problem till now.
[Modified by DBR, 6:02 AM 11/7/2001]
the engine is cold. As the engine approaches operating tempeture, it runs better! After reaching full tempeture.... it is great again. My wife refuses to ride in it till I do something to rectify the problem. Can anyone give me a suggestion to fix. I have had this Vette for several years and never had a serious problem till now.
[Modified by DBR, 6:02 AM 11/7/2001]
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Re: cold engine runs terrible (DBR)
My 84 runs very rich untill it reaches 140 degrees or so. I would check for vacuum leaks first and then work through plug wires, plugs, distributor cap, rotor and even consider the maf sensor.
Good luck !!!
Good luck !!!
Racer
Joined: Jun 2000
Posts: 428
Likes: 1
From: Friendswood Texas
Re: cold engine runs terrible (DBR)
I'm currently having exactly the same problem.
I've recently replaced (for other reasons) the MAF, plugs, plug wires, distributor cap, rotor, ignition module, and set the base timing. So it's not any of that stuff.
I'm thinking it's running too rich until it goes closed loop - so maybe a leaking fuel injector. I hadn't thought about the cold start injector - maybe....
Good luck. I'll let you know if I find out anything else.
I've recently replaced (for other reasons) the MAF, plugs, plug wires, distributor cap, rotor, ignition module, and set the base timing. So it's not any of that stuff.
I'm thinking it's running too rich until it goes closed loop - so maybe a leaking fuel injector. I hadn't thought about the cold start injector - maybe....
Good luck. I'll let you know if I find out anything else.
Thread Starter
Intermediate
Joined: Dec 2000
Posts: 27
Likes: 0
From: Belpre,Oh 45714 USA
Re: cold engine runs terrible (Mike263)
I wass told by a reputable mechanic (if you can believe that) that it may be the coolant sensor switch. If that is it, it will be a cheap fix! Thanks for the help
Safety Car
Joined: Mar 2000
Posts: 3,620
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From: Hillsboro OR
Re: cold engine runs terrible (DBR)
I wass told by a reputable mechanic (if you can believe that) that it may be the coolant sensor switch. If that is it, it will be a cheap fix! Thanks for the help
