Engine 1991 foxbody gt won't move

General karthief said:

I'm going out on a limb here and say trans problem.
How many miles?
Idles normal? Can you rev it up in park ok?

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Potomus Pete said:

You replaced the TPS, and then it went down to normal. Last week my TPS was bad and my idle was at 2000. Thats a hard one to diagnose. First is to check your throttle cable for getting caught up. Make sure its smooth. Then we need to confirm that the TPS is new, and working correct. If it was me I would clean the whole throttle body with cleaner if it has never been. Keep it off the new TPS. that's how I broke mine, and it reved at 2000 til I replaced it.

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slow84lx said:

Start with some very basic information. Tell us what year, engine, and transmission is in your car. Don't guess. Don't make us guess. Big waste of time all around. There is a huge wealth of knowledge on this board and lots of people who are willing to help.

Don't keep changing parts. You'll create worse problems. Diagnose, then fix.

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