It sounds like you just reset to computer. Give it some miles to "relearn".
Doug Fedeli
yummy wrote:
> OK, this problem has just developed in the past week or so...
> 1) turns over hard when cold, like a low battery. catches after a couple
> of cranks like normal and runs fine.
> 2) when coming off of the throttle and taking it out of gear, such as
> when approaching an intersection, it returns to an idle of about 500,
> instead of 900. it runs a little rough at this speed, but does not
> stall. I blip the throttle and it returns to idling at 900 again.
>
> This afternoon, I changed the oil, filter, and spark plugs, and
> disconnected and inspected the battery. When I started it back up, it
> turned over really hard, and took 30 seconds to catch. Wouldn't hold
> the idle, kept stalling out unless I held the throttle. After a minute
> or so, it held the idle, at 900, by itself. Took it for a 35 mile test
> drive, mostly on the highway, ran fine, except for the 500rpm idle
> thing, and 1 small backfire at the beginning, which it has never done
> before.
>
> The battery looks fine, condition indicator is green, all lights in
> the truck are strong, alternator gauge reads dead-on 14 1/2 since I
> bought the truck, no idiot lights are on...any ideas? some oxygen sensor
> somewhere? Starter going bad? Have the battery checked anyway? Wait
> until the ECM reacclimates itself, since I just unhooked the battery
> this afternoon? Help...
>
> William
> '97 sc sb 2.5l w/Airaid, catback exhaust, 8.5mm wires, 6 mos til the
> 4.7l...
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