80 coupe power surges

  #1  
Old 12-24-2006, 04:25 PM
1st Gear
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Default 80 coupe power surges

my '94 2L 16v has an issue with power surges, normally in first or second gear, as soon as you pull away or change up the power dies and then it feels like there is some sort of blockage, you can put the pedal to the floor and itll accelerate slowly then suddenly take off. itll also sometimes not take off and just pull really slowly in gear...

any ideas please, i know its very general but any ideas at all...
 
  #2  
Old 01-17-2007, 07:15 PM
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Default RE: 80 coupe power surges

ok, bit stranger, when driving in whatever gear the power just goes and the revs slowly drop, no matter how much you press the accelerator, a few seconds later it seems to 'catch' and the revs shoot back up, it does this with a rough idle for a few minutes then goes back to normal for about ten minutes...then does it agian.

got to be some ideas please!
 
  #3  
Old 01-19-2007, 05:17 AM
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Location: Black Mountain, NC
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Default RE: 80 coupe power surges

sounds kinda like a bad knock sensor yo! see if you can poke at it (test / check it some how )
 
  #4  
Old 01-20-2007, 01:22 AM
Join Date: Aug 2005
Location: Brooklyn, NY
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Default RE: 80 coupe power surges

I usually start by checking if no vacuem leaks around. After that, if non present I try to find at what point it actually started going bad.
like usually with me, I fix one thing, and break another. Like fan speed switch is fixed and then I broke heater cable. etc....
 
  #5  
Old 01-21-2007, 11:18 AM
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Default RE: 80 coupe power surges

as im still very much learning all this as i go, where in the wide wide world of sports is the knock sensor?


thanks again
 
  #6  
Old 01-21-2007, 12:36 PM
Join Date: Nov 2005
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Default RE: 80 coupe power surges

also clean the idle control valve out and check the pipes from that valve for cracks

[IMG]local://upfiles/12092/40C6E72E065B4B1FA8FC432E7945DBE1.jpg[/IMG]
 
  #7  
Old 01-21-2007, 06:34 PM
2nd Gear
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Location: Black Mountain, NC
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Default RE: 80 coupe power surges

clean the valve first ... easier and less mess ... and as told by [email protected] inspect the hoses ... take a look from the inside of the hoses .... oil vapor will brake down rubber hoses from the inside and cause vacum leaks ( read rough running, idle ) ... do that first and let us know how goes it ... good luck
 
  #8  
Old 01-22-2007, 11:39 AM
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Default RE: 80 coupe power surges

thanks for the advice, i replaced the idle vale last month so it may be related, I also drained some of the oil out as it appeared to have a bit much in it, now its mentioned i take it excess oil could cause the damage...

more woes soon...probably...
 
  #9  
Old 01-23-2007, 02:51 AM
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Location: Black Mountain, NC
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Default RE: 80 coupe power surges

check up on stuff and let us know how it goes
 
  #10  
Old 01-25-2007, 08:55 PM
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Join Date: Nov 2006
Posts: 16
Default RE: 80 coupe power surges

it seems to be fixed by running some cloth through the idle valve, although it seemed to have got a lot of gunge in it from one month of use, suppose that serves me right for using one out of a vauxhall..

and not the car idles at 900rpm, not 1k, ho hum. thanks for all the help, im sure ill manage to break it again soon...
 
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