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Old 10-28-2008, 12:20 PM   #1
Infinitrium
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1994 SL1
Default Running rough on acceleration, low power

I jut really noticed this today. The car seems to miss or sputter a bit on acceleration and generally seems to be down on power. It doesn't have the pickup it did just a few weeks ago. It's even worse with the AC on. It feels like it's pulling about 500 pounds of extra weight, again worse with the AC on. To me it feels like it's almost running out of fuel, or there's a large air restriction. I cleared the codes via the PCM-B and the INJ fuses thinking it might help but it didn't. Any ideas?
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1996 Saturn SL2 automatic. Dead.
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Old 10-28-2008, 12:30 PM   #2
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1998 SC2
Default Re: Running rough on acceleration, low power

If you get a code, have it read and bring the number back here. Is the idle still OK? Is the temperature indication where it should be?
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Old 10-28-2008, 12:51 PM   #3
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1994 SL1
Default Re: Running rough on acceleration, low power

It idles fine. The temp gauge was reading a bit low, usually right on the 1/4 mark, I put a piece of cardboard in front of the radiator fan and it helped raise the temperature a bit.
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1996 Saturn SL2 automatic. Dead.
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Old 10-28-2008, 01:01 PM   #4
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1998 SC2
Default Re: Running rough on acceleration, low power

ECTS and or thermostat or the ECTS connector is your problem. Have you replaced any of these?
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Old 10-28-2008, 01:16 PM   #5
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1994 SL1
Default Re: Running rough on acceleration, low power

Haven't replaced them yet. I guess I'll be doing that this weekend. A bad ECTS or thermostat would cause the low power stumble on acceleration problem?
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1996 Saturn SL2 automatic. Dead.
1994 Saturn SL1 automatic. Not dead yet.
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Old 10-28-2008, 02:12 PM   #6
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1998 SC2
Default Re: Running rough on acceleration, low power

Yes. Replace the ECTS and if the thermostat has never been replaced might as well do it also. After all of this your temp gage should read like this chart. Don't forget to check the ECTS connector carefully for corrosion.

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Old 10-28-2008, 02:17 PM   #7
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1997 SL2
1995 SC2
Default Re: Running rough on acceleration, low power

If the above doesnt do anything, remove the o2 sensor and drive around the block. Feel an increase i power? If so then your Catalytic converter is clogged.
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Old 10-29-2008, 04:04 PM   #8
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1994 SL1
Default Re: Running rough on acceleration, low power

The car seems to have plenty of power when it' cold...
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1996 Saturn SL2 automatic. Dead.
1994 Saturn SL1 automatic. Not dead yet.
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