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CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!!
Thread Starter
Racer
Joined: Sep 2003
Posts: 490
Likes: 0
From: LaPLATA Md
CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!!
I put a Granatelli cold air intake on my 01 vert and I feel the motor surging when i let of the gas or when I am cruising between 50 and 60 mph.I have put about 60 miles on the car since install.Is this normal?Does the computer have to relearn and readjust for the extra air?Or is this normal?No check engine lights are on.My wife also noticed it and she did't know I had changed the intake.Please help.Thanks :confused:
Moderator Emeritus
Joined: Apr 2002
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From: Always living in a state of Confusion.
Gone, but not Forgotten
Cruise-In 5, 6, 8 & 10 Veteran
St. Jude '03-'04-'05-'06-'07-'08-'09
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (Southview)
I know this isn't going to help, but when I installed my Blackwing I had to do nothing. However, I have read some posts where some say you have to drive for a few miles for the computer to relearn. I'm sure othere will chime in on this. Good luck :thumbs:
Race Director
Joined: May 2003
Posts: 14,137
Likes: 2,985
From: Iowa
St. Jude Donor '03 thru '26
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (Southview)
I have read on this forum it does take some time for the Vette's computer to adjust to changes in the intake or exhaust. In the past week I changed my exhaust and have found no difference in runnability but it's a whole hell of a lot louder :)
Safety Car
Joined: Oct 2003
Posts: 3,644
Likes: 13
From: South of Boston MA
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (Southview)
I have a new air intake system (twin cone filters) on order. I've already been told to expect some "rough" idle or less than smooth acceleration until the computer learns the new air flow capabilities of the new intake. Should not take all that many miles. I'll post any problems I encounter. :chevy
Advanced
Joined: Jun 2003
Posts: 62
Likes: 0
From: Austin TX
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (Southview)
I installed a twin cone air filter system with a new air bridge and smooth coupler on a 2000 vert several weeks ago. I did not notice any change in performance. That's OK because I did it for the look. A few extra HP would be a bonus. I did not get any messages on the DIC nor did I feel any surging sensation.
I have been told that the computer does relearn after a few hundred miles.
I have been told that the computer does relearn after a few hundred miles.
Le Mans Master
Joined: Aug 1999
Posts: 5,411
Likes: 2
From: N Carolina 08 Z51 Coupe
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (cherry_00)
Make sure you don't have any air leaks from a coupler or loose connection. This could cause the surge problem.
mike
mike
Le Mans Master
Joined: Aug 2001
Posts: 6,213
Likes: 1
From: South Alabama
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (C5~Missle)
Make sure you don't have any air leaks from a coupler or loose connection. This could cause the surge problem.
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Cruising
Joined: Oct 2003
Posts: 10
Likes: 0
From: san jose ca
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (C5~Missle)
Make sure you don't have any air leaks from a coupler or loose connection. This could cause the surge problem.
mike
mike
Also it probably would be best to do an idle relearn procedure. It's pretty easy and will make sure everything is :cool:
Safety Car
Joined: Feb 2003
Posts: 3,865
Likes: 0
From: Chicago il
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (SanJoseFRC)
You prbably forgot to put one of the vaccum lines back in, its a small one and you need to poke a hole in the coupler and stich the hose in there, it should smooth you out.
where did you get it from E-bay?
where did you get it from E-bay?
Thread Starter
Racer
Joined: Sep 2003
Posts: 490
Likes: 0
From: LaPLATA Md
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (Monster231)
Yeah,I got it on ebay.I drove the car about 100 miles today and it seems to studder when decalerating.I haven't had the car that long but I don't remember feeling it before.Takes off great and after about 30 min of driving it ran smooth,just has the problem when letting off the gas to slow down.Checked all clamps and everything seems to be on tight.I know why do I want to slow down? :lolg:
Team Owner
Joined: Jun 2001
Posts: 26,714
Likes: 344
From: Houston, TX
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (Southview)
I don't think they need any re-learn. Mine has not on either C5 I've had.
Is it an oiled filter? If so, make sure it does not have too much oil that could have gotten on the wires on the MAF. I"ve heard of that happening.
Is it an oiled filter? If so, make sure it does not have too much oil that could have gotten on the wires on the MAF. I"ve heard of that happening.
Drifting
Joined: Sep 2002
Posts: 1,529
Likes: 53
From: Houston, TX
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (jschindler)
From my limited experience, you should have no ill effects from installing one of the aftermarket intakes......... especially a rougher idle or surging.
If you have any leak..... even a small one and are sucking in un-metered air, you will get the problem(s) that you are describing. Air leaks after the MAF are the culprits. You kinda need to pull the entire system off........ bench-check the fit of each individual piece....... and then install on the car. The rubber, plastic and metal parts should fit tightly and really not need a clamp to seal properly.... but do use the clamps to keep everything snug. A small and very, very thin layer of silicone grease can help rubber parts slide without bunching up.
Also as somebody above stated, an overoiled air filter will cause problems with the MAF sensor wires. Those need to be clean and dry.
If you have any leak..... even a small one and are sucking in un-metered air, you will get the problem(s) that you are describing. Air leaks after the MAF are the culprits. You kinda need to pull the entire system off........ bench-check the fit of each individual piece....... and then install on the car. The rubber, plastic and metal parts should fit tightly and really not need a clamp to seal properly.... but do use the clamps to keep everything snug. A small and very, very thin layer of silicone grease can help rubber parts slide without bunching up.
Also as somebody above stated, an overoiled air filter will cause problems with the MAF sensor wires. Those need to be clean and dry.
Drifting
Joined: Jul 2002
Posts: 1,613
Likes: 0
From: Spring Tx
Re: CAR SURGING AFTER COLD AIR INTAKE INSTALLED!!!!!!!! (TexasRedZ06)
Mine had an idle surge, right after installing a K&N and ZO6 lid, did the idle relearn, removing and reinstalling fuses 16 and 23. Cured the problem immediately. It seems these cars all react differently to cold air installs...
