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Old 08-16-2005, 18:45   #1 (permalink)
'96 T-Bird/'86 Cougar Own
 
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frown '96 T-Bird Rough Idle

Hello,

I'm new to the forms, so sorry if this thread already exists. I just bought a '96 Thunderbird LX (V8) a couple weeks ago. Everything has been absolutely perfect with it. Recently (yesterday), it's been doing odd rough idling when in drive. I'll be driving around town or whatnot and have to stop for a stoplight/sign/whatever, and it'll idle really rough...seems like anywhere below 1,000 RPMs. I put it in neutral and rev it once, to maybe 3,000 RPMs, let it come back to idle, and the rough idling goes away. Every now and then it would come back...but it was very random. Anybody got any ideas?
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Old 08-17-2005, 19:25   #2 (permalink)
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Re: '96 T-Bird Rough Idle

try changing out the fuel filter its under the passanger side of the car. mine did the same thing and that help smooth it out. also it wouldn't be a bad idea to check out the air filter either.
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Old 08-29-2005, 18:22   #3 (permalink)
'96 T-Bird/'86 Cougar Own
 
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Re: '96 T-Bird Rough Idle

My air filter is new and the air box is clean...not sure about the fuel filter...I should check that.

Anwyays...I took the car to a shop to have them plug it into their computer. The guys said that they got the code (I don't remember the exact code) that told them the engine was over-revved. I've only owned the car for a few weeks, and do not ever remember over-revving it (maybe the previous owner did it...who knows). They said that when the over-revved situation is triggered, that it causes the car to run funny (and that a reset fixes it). Is this true? Or are they feeding me garbage? Also, they recomended that I have the injectors cleaned. I figured that if the injectors were dirty enough to cause the car to run funky, that it would be a constant thing...not something random. Am I wrong?

Becides the over-revving and them suggesting to have the injectors cleaned...they said the car checks out fine. What do you think?
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Old 08-30-2005, 15:29   #4 (permalink)
'96 T-Bird/'86 Cougar Own
 
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Re: '96 T-Bird Rough Idle

Alright...so I got the car back from the shop. They cleaned the fuel injectors and replaced the fuel filter (even though I don't think either were necessary...but I let them do it anyways)...and they reset the "over-revved" circuit with the computer (code 1270). I didn't notice a difference when driving the car, but we'll see if the weird idle comes back. I sure hope not.

Onto another question...the car has a shake when going 60+ MPH. I had the wheels balanced, and it significantly decreased, but is still there (mainly felt in the steering wheel). Pep Boys (where I got my wheels balanced) said that my drivers upper control arm has a lot of play. I don't know if it's just my mind playing tricks on me, but I think that the shake is only coming from the drivers side wheel. I wanted the shop to check it out since the car was there...but they quoted me as no charge, so it "slipped" their mind. Would replacing it fix my shake?
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Old 09-02-2005, 11:53   #5 (permalink)
'96 T-Bird/'86 Cougar Own
 
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Re: '96 T-Bird Rough Idle

Eh...in any case, the car runs fine now.
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Old 11-30-2005, 20:17   #6 (permalink)
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Re: '96 T-Bird Rough Idle

put the tire on the back and see if it takes the shake out of the wheel
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Old 12-20-2005, 19:26   #7 (permalink)
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Re: '96 T-Bird Rough Idle

i have a 1993 T-Bird SC and had the same idle problem. i replaced the fuel filter and it went away.
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