Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

Rough idle

Thread Tools
 
Search this Thread
 
Old 04-01-2007, 03:17 PM
  #1  
Junior Member
Thread Starter
 
eighty_nine_ta's Avatar
 
Join Date: Dec 2006
Location: Texas
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 Firebird
Engine: 305
Rough idle

My car has a really rough idle. It goes back and forth between about 500 and 800 sometimes lower almost to the point of dieing. Could new plugs/wires maybe help this?

Also, at high RPM's, about 4K, the engine sounds like it's trying to cut out. I'm replacing my fuel pump soon and I was wondering if that would help this.
Old 04-01-2007, 04:31 PM
  #2  
Junior Member
 
quadrojunk's Avatar
 
Join Date: Mar 2007
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Re: Rough idle

First of all it might help to list anything you have checked, if any. I would check plugs/wires first, then check the fuel, it may just be a filter clogged. Thats not uncommon. Is this a daily driver or has it been sitting?
Old 04-01-2007, 11:38 PM
  #3  
Junior Member
Thread Starter
 
eighty_nine_ta's Avatar
 
Join Date: Dec 2006
Location: Texas
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 Firebird
Engine: 305
Re: Rough idle

It's a daily driver. I haven't really checked anything, I'm not too mechanically inclined. I changed the fuel filter a few months ago.
Old 04-05-2007, 11:06 PM
  #4  
Junior Member
 
raiders8498's Avatar
 
Join Date: Jul 2006
Posts: 76
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 Trans Am
Re: Rough idle

im also having this problem but my cars been siting and before i parked it i pumped cheap gas i think it had water, and it went to the injectors and corroded it insise i already changed the filter does this make sense or could something else be the problem
Old 04-06-2007, 07:09 AM
  #5  
Junior Member

 
Blue-Z28's Avatar
 
Join Date: Jun 2002
Location: Maine
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
Car: 86 IROC-Z
Engine: 305 tpi
Transmission: 700R4
Re: Rough idle

Is it a TPI-? Replace both MAF Relays, I had the same problem


https://www.thirdgen.org/forums/atta...n-z-relays.jpg
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GeneralIesrussi
Carburetors
5
01-20-2020 01:06 PM
IROCtometal
TPI
2
09-20-2015 11:08 PM
IROCtometal
TPI
3
09-09-2015 10:01 AM
89fast5oh
Exhaust
2
09-08-2015 09:55 AM
IROCtometal
TPI
0
09-02-2015 02:01 PM



Quick Reply: Rough idle



All times are GMT -5. The time now is 01:24 PM.