1993 ford T bird rough idle

1993 FORD THUNDERBIRD

215,000 MILES • 6 CYL • 2WD • AUTOMATIC

SUPERCHARGED BRAD

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i have a great ford t bird but lately it been acting up I'll be siting at idle at around 550 rpm then will drop to about 500 then oil gage starts to jump around and then will die all happens in drive and when i start the car some times but i just rev it up when i start it and that will go away till i come to a stop then it acts up if i put it in N when I am stopped it will go away i have a new fuel filter and alternator and rebilt transmission

Mar 1, 2011 at 4:09 AM

CJ MEDEVAC

CERTIFIED EXPERT
11,004 POSTS

It could be your IAC

They get dirty, and their internals will sorta stick and not move freely.

This thing is the actually what does the Work to control the idle

Not long ago, I replaced the one on my wife's Ford Escape--I TOOK PICS!

Although yours does not look exactly like hers (I just went to Autozone On-Line and saw yours), they are located at the beginning of the intake (maybe not on top like hers), It EXTERNALLY "Jumps Over" the Big Butterfly valve (throttle plate)---OR--Bypasses it, allowing air to slip by (Computer tells IAC how much, constantly, to maintain a steady idle)

It is EZ to remove and clean, I figured with the age and miles hers had.......I would just "Treat" Mr. Escape to a New one.....Preventative Maintenance!

Here's her's.....Remember yours is different looking, maybe on the side and not the top.....I do not know your vehicle much at all.

Just a few bolts hold it on, just a quick clean up job, may VERIFY this may be the problem (costs you nothing, to find out!)....Clean or replace is up to you.

Let me know if it was just that EZ

The Medic

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Mar 1, 2011 at 4:45 AM