'87 4kq running poorly

Tony Hoffman auditony at gmail.com
Thu Jan 19 05:45:39 PST 2012

Coule be a multitude of things, but sounds like a bad connection somewhere.
I'd start with checking the ECU grounds on the intake manifold. Then, just
wiggle things while the car is running, adn see what, if anything affects
it. Maybe the hall sender wiring, maybe a corroded connection on the coil,
maybe something else.


On Wed, Jan 18, 2012 at 8:53 PM, Andrew Buc <AndrewBuc at staxman.net> wrote:

> I should say first off that I'm almost certainly going to take the car
> into the shop in the next day or two rather than try to fix it myself. But
> given my commute, being without the car will be very inconvenient, and I'd
> like to get an idea of how much downtime and expense I'm likely to be in
> for.
> This all began this morning on the commute. Sometimes the car would lose
> speed for a few seconds, then abruptly speed back up. It got worse on the
> afternoon commute. I drove around a bit after getting home, and the problem
> has leveled off, but at a very inconvenient level. Other symptoms:
> The car starts fine and idles fine very briefly, then the idle becomes
> slow and rough, but it does keep running. It doesn't run very well on light
> throttle--I have to really mash it to get going from a standstill. Under
> way, I often find myself using a lower gear and more revs than I normally
> would. The temporary slowdowns followed by abrupt speedups have continued.
> Any insights? Thank you.

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