fourrunin
New member
ok, just about a year ago this month, came home from vegas to the fam and the 4r had a definite issue. To my memory it shuddered upon acceleration and had heavy resistance , mostly worse the cooler outside it got. it seemed to shake at 50-62 mph, like an outa balance tire- sort of, then in a *snap* it would be back to normal.
Took it in to get the tranny flushed, was told the fluid was burnt and hammered to water. May have damaged some vibrational dampers(?)
The fluid change help to soften the issue, but it came and went without consistency.
At some point the CEL came on, no. 5cyl not firing, but I could really feel this. It came and went too. The reason I could separate it was when it wouldn't fire for a period of time, the light would flash, as if re-entering the code (?)
Super jerky, felt almost like running outa gas etc...
3 weeks ago put in another injector and put in new Bosch +2's.(old plugs look good) seafoamed the intake, it was pretty clean anyhow.
No CEL and she starts alot easier and there is a little better response on the pedal.
BUT
the (suspected) tranny problem remains. If accelerating into the mid 50 mph the shudder starts, let off gas, tap it hard, readjust pedal, can find a sweet spot it doesn't do it. This is in the 50-62mph range.
It seems to me, jumping onto an on-ramp, shes got no giddy-up n go like I remember before the long lit 5th cyl failure light.
It reminds me of the old TPS problems on my 86's Ive had.
Are TPS probs common on these?
HOw do I separate a tranny problem from an intake prob with NO CODES???
I see a diagnostic plug attached on the driver side engine bay
I can sit in park and rev it with out hesitation or shaking
Idles nicely, especially with new plugs
I can cruise down the side streets without hesitation or "oddness"
I just get the shuddering at irregular intervals, the it "releases"
what I mean by that is it suddenly goes back to normal feeling.
Normal drivability, normal pedal response. But I know she doesnt have the proper acceleration when needed
How do I begin to diagnose this properly?
What can I expect for a bill to open the tranny to inspect??
Took it in to get the tranny flushed, was told the fluid was burnt and hammered to water. May have damaged some vibrational dampers(?)
The fluid change help to soften the issue, but it came and went without consistency.
At some point the CEL came on, no. 5cyl not firing, but I could really feel this. It came and went too. The reason I could separate it was when it wouldn't fire for a period of time, the light would flash, as if re-entering the code (?)
Super jerky, felt almost like running outa gas etc...
3 weeks ago put in another injector and put in new Bosch +2's.(old plugs look good) seafoamed the intake, it was pretty clean anyhow.
No CEL and she starts alot easier and there is a little better response on the pedal.
BUT
the (suspected) tranny problem remains. If accelerating into the mid 50 mph the shudder starts, let off gas, tap it hard, readjust pedal, can find a sweet spot it doesn't do it. This is in the 50-62mph range.
It seems to me, jumping onto an on-ramp, shes got no giddy-up n go like I remember before the long lit 5th cyl failure light.
It reminds me of the old TPS problems on my 86's Ive had.
Are TPS probs common on these?
HOw do I separate a tranny problem from an intake prob with NO CODES???
I see a diagnostic plug attached on the driver side engine bay
I can sit in park and rev it with out hesitation or shaking
Idles nicely, especially with new plugs
I can cruise down the side streets without hesitation or "oddness"
I just get the shuddering at irregular intervals, the it "releases"
what I mean by that is it suddenly goes back to normal feeling.
Normal drivability, normal pedal response. But I know she doesnt have the proper acceleration when needed
How do I begin to diagnose this properly?
What can I expect for a bill to open the tranny to inspect??
