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Car will idle...but won't go... by BlueCat
Started on: 01-05-2004 12:49 PM
Replies: 8
Last post by: James Bond 007 on 01-05-2004 06:50 PM
BlueCat
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Report this Post01-05-2004 12:49 PM Click Here to See the Profile for BlueCatSend a Private Message to BlueCatDirect Link to This Post
I was driving down the highway for about an hour last night...went to accelerate...car stuttered/stumbled. I pulled off and the car was idling rough. Tried to drive around the parking lot and the car would stumble if I pushed the accelerator too much...couldn't get above 5 MPH. I disconnected the oxygen sensor and the car idles much smoother, yet high. Still "won't go" though.

Here are a few other things that may help diagnose the issue(s):
0. 1987 4cyl auto 124,000 miles
1. Tach will drop completely from time-to-time
2. Last oil change I added Restore to the oil
3. It was raining last night and I left the trunk open while prepping to leave
4. Starter has been acting up lately...making grinding noises...having to move the wires to get a start.
5. One of the coils was replaced a few years ago...as far as I know, the other is original

My guesses are as follows:
1. one of the sensors got wet (MAP, MAT, etc)
2. lost an ignition coil
3. Ignition Module is dead
4. Vac leak (I didn't check last night...)

Any advice or specific suggestions are greatly appreciated...please help b/c I am considering having it towed to the yard...

Thanks

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$Rich$
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Report this Post01-05-2004 01:10 PM Click Here to See the Profile for $Rich$Click Here to Email $Rich$Send a Private Message to $Rich$Direct Link to This Post
when it idle's is it hittn on all 4?
figure that out first, then try and track it down from there
could be a coil pack, or a bunk wire


hows the fuel filter?

if the ign. mod was dead, it wouldnt run at all, (i think )

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BlueCat
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Report this Post01-05-2004 01:28 PM Click Here to See the Profile for BlueCatSend a Private Message to BlueCatDirect Link to This Post
The car had been sitting for most of the past 3 weeks...although I did take it out one day last week with no problems.

The idle seems fine...How would I make sure all four were firing at idle?

With a volt meter on the battery I was reading 14.05 V while the car was running.

How much trouble is it to replace a coil?

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Mike Smith
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Report this Post01-05-2004 01:33 PM Click Here to See the Profile for Mike SmithSend a Private Message to Mike SmithDirect Link to This Post
If it idles fine I would think that the coil packs are okay. I would check the throttle position sensor next.
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BlueCat
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Report this Post01-05-2004 02:13 PM Click Here to See the Profile for BlueCatSend a Private Message to BlueCatDirect Link to This Post
Can you disconnect the TPS and still drive the car? Will the ECM use a default like with the O sensor?
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BlueCat
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Report this Post01-05-2004 03:03 PM Click Here to See the Profile for BlueCatSend a Private Message to BlueCatDirect Link to This Post
The Haynes manual says that the ECM should use a default if the TPS goes bad?
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LS1swap
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Report this Post01-05-2004 04:57 PM Click Here to See the Profile for LS1swapClick Here to visit LS1swap's HomePageClick Here to Email LS1swapSend a Private Message to LS1swapDirect Link to This Post
your catalytic converter. may be plugged
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BlueCat
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Report this Post01-05-2004 05:02 PM Click Here to See the Profile for BlueCatSend a Private Message to BlueCatDirect Link to This Post
It is new...maybe 6,000 miles on it ??? Could it clog that quickly?

Could the muffler be clogged?

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James Bond 007
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Report this Post01-05-2004 06:50 PM Click Here to See the Profile for James Bond 007Send a Private Message to James Bond 007Direct Link to This Post
Pull the codes.
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