700R4 TCC Solenoid bad? (limited EFI content)
Roger Heflin
rah at horizon.hit.net
Wed Mar 15 19:26:41 GMT 2000
On Wed, 15 Mar 2000, Patrick G. Moore wrote:
> I wasn't going to say anything, but this sort of symptom happened on my 87 3.8
> when the coil pack was going bad. During cruise, a light load increase would
> cause it to buck. Give it some gas or downshift and it seemed to run ok. It
> got worse and worse over time. Fuel injector cleaner seemed to help a couple of
> times, so I put recond injectors in. That didn't help. Timing light on the
> plug wires showed spark. Finally replaced the coil pack anyway and it was
> fixed. I don't know how to test a coil pack easily except to see if the
> resistance is the same on all coils.
Just about any miss I have found seems to manifest itself most at
light throttle with the TCC locked. The car shutters when the TCC is
locked. Just a slight increase in the throttle and the car shutters
pretty bad.
Roger
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