Engine 1991 foxbody gt won't move

[Walt64665]

Hi my fox body will not move it has to rev up to 2000rpm before it'll start creeping before it would shut off when i accelerate then changed tps and fixed that problem. I was wondering if it could be the sensor or trans problems or engine problems plz help

 

[Potomus Pete]

You have to explain it better Walt. Where is Carmicheal when you need him.

 

[Walt64665]

My speedometer surges while driving but idles fine everythings stock ford parts except cam and air intake i bought this way its automatic as well i re did timing and such and changed fluids and the tps and now it revs to 2000 then jumps then revs down some then starts moving

 

[Potomus Pete]

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.

 

[General karthief]

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?

 

[Walt64665]

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?

Im not sure i never tried and 64k

 

[Walt64665]

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.

Ok ill try that

 

[KRUISR]

If speedometer surges/bounces (while maintaining same speed) it could be speedo cable or gauge. Personally I have melted my cable a couple times and it would do the same. Could also be the speedo gear in the tranny, missing a couple teeth.

 

[slow84lx]

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.

 

[Walt64665]

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.

Year 1991 gt, trans aod, engine 302

 

[Mustang5L5]

Slipping trans?

we really need more details here otherwise we can only guess

 

[Potomus Pete]

If it only has 64k tranny should be ok, unless 164k . Read on, and try to work with it. Try to explain yourself with more detail. Online help means you have to be precise in your answers. Read up on the cable that goes to the trans. I don;t know what its called maybe 'knockdown' . Some trans problems have been linked to this cable.

 

[slow84lx]

Read up on and check the setting on your TV cable. An AOD can be fried in minutes if this is not adjusted correctly, no matter the mileage. Do not keep revving your car if it is in gear and not moving.

Here is some info:

TV Linkage Adjustment Info

TV Linkage Adjustment & Retrofitting Information.

www.becontrols.com

View: https://www.youtube.com/watch?v=6L3hNzxdiYw