95 Jimmy 4x4 - high idle after wife flattened battery and we boosted it

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AWN - 16 Mar 2008 20:15 GMT

Does anyone know why a 95 (crossover model with full OBD-2 computer) Jimmy
would idle high after the battery was flattened and then boosted? The ECM
isn't throwing codes. It sounds like it would if the EGR were stuck or an
air line was popped off (in either case, this isn't the case). I assumed
after a varied drive, the computer would correct the problem but as of yet
it hasn't.

Anyone?

Thanks,
Andrew.

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Steve W. - 17 Mar 2008 00:25 GMT

> Does anyone know why a 95 (crossover model with full OBD-2 computer) Jimmy
> would idle high after the battery was flattened and then boosted? The ECM
[quoted text clipped - 7 lines]
> Thanks,
> Andrew.

Disconnect the line going to the 4X4 actuator and plug it to make sure
it isn't leaking due to battery acid leaking on it (it happens)

I would also disconnect the battery, let it set for a couple minutes and
then reconnect and start it. It could be that the dead battery and boost
might have confused the ECM.
After that it becomes a hunt.

Signature

Steve W.
Near Cooperstown, New York

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AWN - 17 Mar 2008 03:59 GMT

Steve,

It's a new Optima battery so I doubt it's leaking acid but it sure does
seem like a line is open somewhere. As for confusing the ECU, that seems
like it could be the case. I will look under the battery and reset the
computer again and see where it lands me...

Thanks!
Andrew.

On 16/03/08 7:25 PM, in article frka9f$ch2$1@aioe.org, "Steve W."
<csr684NOT@yahoo.com> wrote:

>> Does anyone know why a 95 (crossover model with full OBD-2 computer) Jimmy
>> would idle high after the battery was flattened and then boosted? The ECM
[quoted text clipped - 15 lines]
> might have confused the ECM.
> After that it becomes a hunt.

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Steve W. - 17 Mar 2008 04:19 GMT

> Steve,
>
[quoted text clipped - 5 lines]
> Thanks!
> Andrew.

What was the old battery? Try the reset. If that isn't it start looking
for a split or cracked fitting or a hose loose someplace. Start it and
with it idling spray some WD 40 over the lines and fittings and listen
for a change it the engine. The WD won't hurt anything if it isn't a leak.

Signature

Steve W.
Near Cooperstown, New York

Life is not like a box of chocolates
it's more like a jar of jalapenos-
what you do today could burn your a.s tomorrow!

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