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!

surging iroc part 2

Thread Tools
 
Search this Thread
 
Old 08-02-2004, 12:01 PM
  #1  
Member

Thread Starter
 
BadIroc's Avatar
 
Join Date: Jul 1999
Location: West Brookfield, MA
Posts: 198
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Camaro IROC-Z
Engine: 350 Crate Motor Holley Stealth Ram
Transmission: WC T-5
Axle/Gears: 3.73
surging iroc part 2

I dont know if some of you remember this but I had made a thread over a couple months ago about my surging iroc at stop lights and never found the problem yet....well the other day i had noticed on one of our extremly hummid days that we had i decided to turn on the a/c....turned it on and noticed when i got to stop lights it wouldnt surge anymore.....so i got curious and approached another light with the ac off and it started surging again so i went ahead and turned the ac on and then the surging stopped and it started to idle fine. Mind you this is right after i cranked the AC on to full blast then boom the car idles awsome......i find this quite strange...i really dont feel like running my AC on 24/7......what could be causing this?
Old 08-02-2004, 03:13 PM
  #2  
Supreme Member
 
sellmanb's Avatar
 
Join Date: Jul 2004
Location: Tigard, Oregon
Posts: 1,840
Likes: 0
Received 1 Like on 1 Post
Car: '86 Berlinetta
Engine: 350
Transmission: 700R4
hmm, I am very curious about this one, leaving a reply so I get emailed when someone responds sorry to get your hopes up.
Old 08-02-2004, 04:32 PM
  #3  
Member

Thread Starter
 
BadIroc's Avatar
 
Join Date: Jul 1999
Location: West Brookfield, MA
Posts: 198
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Camaro IROC-Z
Engine: 350 Crate Motor Holley Stealth Ram
Transmission: WC T-5
Axle/Gears: 3.73
believe me iam too, its just weird i turn on the AC (cause its hot as hell and it works mint in my car) and all of a sudden the car doesnt surge at a stop any more and idles fine.....
Old 08-02-2004, 04:54 PM
  #4  
Supreme Member
 
Momar's Avatar
 
Join Date: Sep 2001
Location: Decatur, Illinois
Posts: 2,906
Likes: 0
Received 0 Likes on 0 Posts
I really dont know, but there is a vacuum line that runs up to the hvac controls. I wonder if maybe it is leaking in a certain position. That would be a vacuum leak which can cause surging. That is just a guess, but it kinda makes since.

Ben
Old 08-02-2004, 05:15 PM
  #5  
Supreme Member
 
sellmanb's Avatar
 
Join Date: Jul 2004
Location: Tigard, Oregon
Posts: 1,840
Likes: 0
Received 1 Like on 1 Post
Car: '86 Berlinetta
Engine: 350
Transmission: 700R4
that's a interesting thought, I need to read up on A/C some more... I am clueless about it lol.
Old 08-02-2004, 05:28 PM
  #6  
Member

Thread Starter
 
BadIroc's Avatar
 
Join Date: Jul 1999
Location: West Brookfield, MA
Posts: 198
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Camaro IROC-Z
Engine: 350 Crate Motor Holley Stealth Ram
Transmission: WC T-5
Axle/Gears: 3.73
Originally posted by Momar
I really dont know, but there is a vacuum line that runs up to the hvac controls. I wonder if maybe it is leaking in a certain position. That would be a vacuum leak which can cause surging. That is just a guess, but it kinda makes since.

Ben
where's t he hvac controls? sounds like it would make sense, but wouldnt it still surge when the AC is on?
Old 08-02-2004, 05:34 PM
  #7  
Supreme Member
 
Momar's Avatar
 
Join Date: Sep 2001
Location: Decatur, Illinois
Posts: 2,906
Likes: 0
Received 0 Likes on 0 Posts
the hvac controls is actually that panel that you turn the ac on with. Part of it is controlled by vacuum. I dont know if it would actually be possible or not, but I just thought that maybe for some reason it is only leaking in certain positions or something. Like I said, just a guess. I cant think of anything else in the air cond system that would effect the way the engine runs.

Ben
Old 08-02-2004, 05:59 PM
  #8  
Senior Member
 
Spectre's Avatar
 
Join Date: Sep 2001
Location: Montreal\Quebec|Canada
Posts: 968
Likes: 0
Received 0 Likes on 0 Posts
Car: Camaro Z281991 Engine: 5.7L/350 TPI Transmission: TH700R4 ··································· Car: Acura CL 1998
Engine: 3.0L/183
Transmission: 4 spd auto/OD
My car has surging problems while driving and at stops ..

I dont know why the ecm is sending gaz when im not pressing the gaz.. i was told the ecm has to be changed ..

Id also check the oxygen sensor ..
Old 08-02-2004, 10:06 PM
  #9  
Member

Thread Starter
 
BadIroc's Avatar
 
Join Date: Jul 1999
Location: West Brookfield, MA
Posts: 198
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Camaro IROC-Z
Engine: 350 Crate Motor Holley Stealth Ram
Transmission: WC T-5
Axle/Gears: 3.73
Originally posted by Spectre
My car has surging problems while driving and at stops ..

I dont know why the ecm is sending gaz when im not pressing the gaz.. i was told the ecm has to be changed ..

Id also check the oxygen sensor ..
i have yet to figure out this problem and its pissing me off, but ive narrowed it down to this......somthing is triggering this....AC goes on and the car is fine WTF!?!?
Old 08-03-2004, 08:36 PM
  #10  
Member

Thread Starter
 
BadIroc's Avatar
 
Join Date: Jul 1999
Location: West Brookfield, MA
Posts: 198
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Camaro IROC-Z
Engine: 350 Crate Motor Holley Stealth Ram
Transmission: WC T-5
Axle/Gears: 3.73
TTT anything I posted this in the cooling section to to see if any AC experts would chime in but noone has responded
Old 08-05-2004, 07:32 AM
  #11  
Member

Thread Starter
 
BadIroc's Avatar
 
Join Date: Jul 1999
Location: West Brookfield, MA
Posts: 198
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Camaro IROC-Z
Engine: 350 Crate Motor Holley Stealth Ram
Transmission: WC T-5
Axle/Gears: 3.73
ttt again
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jbd1969
Tech / General Engine
1
08-17-2015 07:06 PM
armybyrd
Engine/Drivetrain/Suspension Wanted
0
08-17-2015 08:59 AM
GVMV
Exterior Parts for Sale
0
08-16-2015 07:08 PM
mustangman65_79
Body
3
08-11-2015 03:17 PM
1nastygta
Firebirds for Sale
2
08-08-2015 07:38 PM



Quick Reply: surging iroc part 2



All times are GMT -5. The time now is 03:34 AM.