Rough running

Reply

  #1  
Old 06-19-09, 03:35 PM
Soadaman's Avatar
Member
Thread Starter
Join Date: Jul 2007
Location: Arizona, Glendale
Posts: 77
Rough running

1987 Cabriolet
Wasnt running for a couple years. The lady ran it out of gas quite a bit then it wouldnt start. We redid the timing already and that checks out okay. The sparkplugs have been fouled up like 10 times but ive cleaned them up tehy are platinums so maybe they are bad??? I dont know. At idle it has a strong gassy exaust smell. And it runs rough and wont stay at or above 1,000rpms, if I press the gas petal it will bog down then stall if I dont let off or pump it a bit. The engine runs fine at higher rpms (higher than 1,100). Its fuel injected.
Also the fuel pump never shuts off until I turn the key off. Very rarely it will idle fine but thats not been happening lately.
What could be wrong with it?
Also has a new airfilter......
 
Sponsored Links
  #2  
Old 06-19-09, 04:28 PM
Member
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,672
Anytime you have a vehicle that has been ran out of gas, especially a number of times, you have to consider the fuel pump. That should be tested with a pressure gauge.

Considering the idle period of 2 years, you probably have a varnish/residue problem throughout the fuel system. Use Sea Foam from a auto parts store to clean it up.

Do a complete update on the essential maintenance items, like the plugs, wires, cap rotor, fuel filter.

The fuel pump would be on/off by the key.
 
  #3  
Old 06-19-09, 04:52 PM
Banned. Rule And/Or Policy Violation
Join Date: May 2007
Location: Wisconsin
Posts: 8,629
Did you buy this car from that lady after it sat?

Do you know the history on this car? Like if it ran good before that 2 year period? Or, was it mothballed BECAUSE of the problem? This much anyone should know, so they(you) know how much stuff to maybe be looking at(focusing your attention on).

With out knowing the history, it could be almost anything. You'd have to look at everything under the hood, like under the air filter cover, vacuum lines, maybe a compression test, be sure the timing is indeed correct, fuel regulator problem? Sounds like it is not getting enough air for the amount of too much? gas being delivered, or is not exploding right due to timing or compression or sparking problems.
 
  #4  
Old 06-19-09, 08:09 PM
Soadaman's Avatar
Member
Thread Starter
Join Date: Jul 2007
Location: Arizona, Glendale
Posts: 77
The lady drove it and did a ton of work on it, then she went and had the clutch replaced, after that while driving it home she ran it out of gas and it woudnt start.

We messed with the adjustments today and got it running perfect. The ICV or Idle Control Valve wire was smoking so we just cut it and there has been no problems yet, and I ran it for like 45 Minutes today, including driving.
 
  #5  
Old 06-20-09, 02:22 PM
Banned. Rule And/Or Policy Violation
Join Date: May 2007
Location: Wisconsin
Posts: 8,629
Looks like you found it? Great, fi that is what ti was and you fixed it.

But having smoking wires under the hood is not good. If this was me, and I found something like that going on, I think I'd get that circuit fused better, before the whole engine compartment, and maybe the car, with you in it, burst into flames.
 
  #6  
Old 06-21-09, 05:08 PM
Soadaman's Avatar
Member
Thread Starter
Join Date: Jul 2007
Location: Arizona, Glendale
Posts: 77
Well there were two wires disconected, one went to the ICV and one went to the cold start valve, so obiously they need to be switched around and maybe I connected the wrong one to the wrong wire, no big deal.
 
Reply


Thread Tools
Search this Thread
Display Modes
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 02:49 PM.