Reduced Engine Power
10-05-2003, 12:18 AM
#1
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Reduced Engine Power How does a car go into reduced engine power when you have no trouble codes, no misfire, no knock? Everything looks great, but the car stumbles and goes into reduced engine power without a single ses code or any misfires or knock.
10-05-2003, 08:46 AM
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Re: Reduced Engine Power
How does a car go into reduced engine power when you have no trouble codes, no misfire, no knock? Everything looks great, but the car stumbles and goes into reduced engine power without a single ses code or any misfires or knock.
Is it pulling timing?
Running fat?
10-06-2003, 01:11 PM
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Re: Reduced Engine Power This is in a C5, it says reduced engine power on display. All readings from tech 2 seem perfect, and bam, just dies. Well it misses t hen dies, but funny thing is no engine misfires detected.
10-06-2003, 01:27 PM
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Re: Reduced Engine Power Check for non powertrain codes through the DIC (Hold options and press fuel four times). You could have a brake, steering or active handling problem.
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10-07-2003, 06:26 PM
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Re: Reduced Engine Power When is this happening?
I have had a lot of reduced power(limp mode)over the years.
If you have the 1514 code shut off,it still will go into reduced power, but doesn't set the code.
It seems that when the MAF and TB get out of sync just a little the engine shuts down(reduced power).
Tom Hall
97 C5
422
I have had a lot of reduced power(limp mode)over the years.
If you have the 1514 code shut off,it still will go into reduced power, but doesn't set the code.
It seems that when the MAF and TB get out of sync just a little the engine shuts down(reduced power).
Tom Hall
97 C5
422
10-07-2003, 08:31 PM
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Re: Reduced Engine Power Try removing the neg lead on the battery for a minute and see if it resets then recheck for codes. I have seen this happen on a truck before.
10-08-2003, 12:43 PM
#11
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Re: Reduced Engine Power mine was a differnt problem 
Mine was due to the knock sensor wire grounding out so setting knock sensor code was being set and sending me to low octane tables. But my issue was setting codes....
Mine was due to the knock sensor wire grounding out so setting knock sensor code was being set and sending me to low octane tables. But my issue was setting codes.... 