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

Rough idle....

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Old Mar 3, 2003 | 04:07 AM
  #1  
adamlewis's Avatar
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From: Louisville KY 40299
Rough idle....

Ok.
Heres the story.
89 T2
Car was running fine and then it started blowing EGI fuses.
Buddy didnt want to fix it so he was going to sell it to me.
A lot happened and he wasnt able to sell it so the car sat...For 9 months.
I picked it up the other day and brought it home

Now Ive pulled the plugs and cranked it and you can hear all the individual wooshes ( quite strong actually... ) and the motor ran FINE before it sat so I dont think its blown at all...

However the idle is really rough and it wants to kill itself down low ( exactly how it felt when the engine blew on it last time ).
However, the wirning harness does have a short in it ( blowing the EGI fuse... ), the MAF isnt connected ( He had an AFC in it but pulled it and never connected the wires again ) and the car has sat for 9 months ( could it be bad gas? ).


The only time its rough is down below 1000. It gets up to 2.5k if I tap the throttle very smoothly and even. Havent tried taking it any higher because, as Ive said, its sat for 9 months...




Any ideas?
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Old Mar 3, 2003 | 04:11 AM
  #2  
rotary>piston's Avatar
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From: Boulder, CO
find the short, reconnect the maf, and get some good gas in there. Eliminate the easy to fix probelms first, then look for others if there are any.
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Old Mar 3, 2003 | 04:39 AM
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From: Seattle
the MAF isnt connected
There's why it doesn't want to idle. They need that AFM signal.

I would get all the wiring straightend out before running it if it were me.

Cheers
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Old Mar 3, 2003 | 04:47 AM
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From: Louisville KY 40299
Originally posted by HeffBoost
There's why it doesn't want to idle. They need that AFM signal.

I would get all the wiring straightend out before running it if it were me.

Cheers

Yeah...I just wanted to make sure it would start.

As for the wiring, the haltech is in the mail so Im not really worried about it all
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Old Mar 3, 2003 | 04:50 AM
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From: Seattle
Haltech, nice.
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Old Mar 3, 2003 | 04:51 AM
  #6  
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Originally posted by HeffBoost
Haltech, nice.

hehe

I figured there was no better way to solve the problems that come with a 14 year old wiring harness
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Old Mar 3, 2003 | 05:05 AM
  #7  
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But even with the AFM disconnected, it would still get through the RPM's ok?

It just wouldnt idle?
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Old Mar 3, 2003 | 05:14 AM
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Yeah, that seems odd too. Hmm?
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Old Mar 3, 2003 | 05:23 AM
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Originally posted by HeffBoost
Yeah, that seems odd too. Hmm?

Any ideas?
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Old Mar 3, 2003 | 08:05 AM
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had an AFC in it but pulled it and never connected the wires again


when I instaled the wiring for my s-afc i had to cut one of the wires on the harness. After that I decided to see if the car would still run. well i cranked it and it was running fine then it just starded to die on me unless i reved it. I was like oh **** what did I do. but I pluged in the s-afc and then tried to turn here on and she ran fine. if your friend left this wire cut or loose without the s-afc it will probably not run. Well you do not need the afc but you do need to make sure those wires are connected.
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