2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

up down...........

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Old May 27, 2003 | 09:31 PM
  #1  
owenxguo's Avatar
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From: San Mateo
up down...........

My engine always up down(1500-2000 idle)
is that timing's problem?
checked about 3 days but can not find anything wrong.
and when I use digital scaner to check my car, it can't find ECU
thx

Last edited by owenxguo; May 27, 2003 at 09:42 PM.
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Old May 27, 2003 | 09:50 PM
  #2  
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HAILERS
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From: FORT WORTH, TEXAS,USA
Try to see if your tps is misrigged. Or look for the mysterious small vacuum leak. Or possibly a bac that needs some cleaning. Or possibly your REAL IDLE, is not what it should be....approx 750rpm WITH the initial set coupler installed (or the bac plug disconnected in lieu of that). Or in a pinch....a real low battery voltage/alternator output, due to whatever reason. Or whatever the next post says.
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Old May 27, 2003 | 10:12 PM
  #3  
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From: San Antonio, Tx, USA
your throttle plates also could be open to far, this happened to my car when the fast idle cam was mis adjusted
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Old May 27, 2003 | 11:47 PM
  #4  
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HAILERS
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From: FORT WORTH, TEXAS,USA
Did I leave out lower, cracked, fuel injector grommets?
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