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1995 pontiac sunfire PLEASE HELP
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jarret83
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Nov 17, 2013, 4:33 PM
Post #1 of 8
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1995 pontiac sunfire PLEASE HELP
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Recently whenever im on the highway and come to a stop light, i apply the brake and as my car comes to a halt, it like chokes and dies. Its only done this for two weeks now and i have no clue what it would be, i put a new MAP sensor on, still does it. it doesnt do it in town, only when im on the highway, there has also been a little loss in performance as well. any help is aprecciated! thank you!!
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Discretesignals
Ultimate Carjunky
/ Moderator
Nov 17, 2013, 9:56 PM
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Re: 1995 pontiac sunfire PLEASE HELP
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3 speed automatic? When it does this, does it feel like your driving a manual transmission and forgetting to push the clutch in when coming to a stop?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Nov 17, 2013, 9:57 PM)
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jarret83
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Nov 18, 2013, 6:07 AM
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Re: 1995 pontiac sunfire PLEASE HELP
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Yes it is a 3 speed auto. It like jerks then dies. So I guess you coul say it feels like a manual not being drove right.
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Discretesignals
Ultimate Carjunky
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Nov 18, 2013, 8:00 AM
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Re: 1995 pontiac sunfire PLEASE HELP
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Not uncommon on the 3T40 to have the torque converter clutch to stay engaged while coming to a stop causing the engine to stall out. Usually that was caused by a faulty TCC solenoid. You have to remove the transmission's side cover to get access to the solenoid.
+-+TCC+ENGAGEMENT+2.png)
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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jarret83
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Nov 18, 2013, 8:23 AM
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Re: 1995 pontiac sunfire PLEASE HELP
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ive talked to a couple people i know and they said that my catalytic converter could be bad/clogged but your answer makes a lot more sense!! thank you!
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Discretesignals
Ultimate Carjunky
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Nov 18, 2013, 11:21 AM
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Re: 1995 pontiac sunfire PLEASE HELP
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If the cat was clogged, the engine wouldn't have any power when accelerating.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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jarret83
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Nov 18, 2013, 10:00 PM
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Re: 1995 pontiac sunfire PLEASE HELP
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if my tcc went out, wouldn't it trip a code and show a cel?? i have no lights apparent in my dash.
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nickwarner
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Nov 19, 2013, 2:23 AM
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Re: 1995 pontiac sunfire PLEASE HELP
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You won't always get a code. If the solenoid windings are intact the ECM will not realize there is an issue. It isn't magic, it can only read voltage on the solenoid. But working electrically a solenoid can still fail mechanically. If the solenoid were drawing too much power or had an open circuit in its windings, then you would see a code because that is something the ECM can see and realize a fault exists.
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