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Shades - 25 Feb 2005 06:12 GMT

A Friend brought me his early '90s olds regency with the 3800. It seemed
to have a decent miss at idle which was tracked to the #1 injector. When I
unplugged the injector(engine running) it didn't change the idle. Also, when
going down the road, the car would shutter fairly severe under light to
light/med acceleration. When you give it med and up throttle, it would take
off smooth as silk, and fairly powerfully too.

I replaced the injectors...Idles great. Took it for a test drive and was
awesome under all throttle. Gave the car back and it started doing the
shutter again after a long drive. A mechanic Friend of mine thought it might
be a trans shutter and did a filter and flush. It didn't help!

Possibly-

Plug wire?

Injector plug/harness?

Trans pressure?

Coil?

Coil plate?

??? ??? ????

Any and all ideas would be GREATLY appriciated!

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Mad Dog - 25 Feb 2005 10:02 GMT

Injector harness, Mass airflow sensor or Crank position sensor

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Mad-Dog
'79 Chevy K-10
Slightly modified
http://mad-dog16.tripod.com/
--

> A Friend brought me his early '90s olds regency with the 3800. It
> seemed to have a decent miss at idle which was tracked to the #1 injector.
[quoted text clipped - 23 lines]
>
> Any and all ideas would be GREATLY appriciated!

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seeray28 - 24 Feb 2005 23:55 GMT

I know that this seems like a silly one, check the harmonic balancer to see
if it has spun on the rubber ring inside it. A car I worked on gave the same
symptoms, turned out that the balancer spun and was firing the crank sensor
at the wrong time
worth looking at at least

> Injector harness, Mass airflow sensor or Crank position sensor
>
[quoted text clipped - 25 lines]
> >
> > Any and all ideas would be GREATLY appriciated!

Reply to this Message