AIR pump pulley delete problem
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 34
Likes: 0
From: Silver Spring MD
AIR pump pulley delete problem
SO i installed the new Air pump delete pulley and am now having problems. I think i messed up the engine rotation somehow. When i turn the car on it is fine, but when i hit the gas no matter what gear im in the engine bogs down and also miss fires!! Does anyone have any idea why this is happening? I was under the impression that the delete kit was a direct replacement with no problems and i cant seem to find a thread where any one else had my problem! any help would be appreciated!!
Heel & Toe
Joined: Jun 2009
Posts: 17
Likes: 0
From: Dundee IL
I put the pump delete kit on my car and it required a 1" shorter serpentine belt, the belt would slip when u reved the engine. the new shorter one actually cost less than a stock belt. That could be it.
Safety Car
Joined: Nov 2008
Posts: 4,328
Likes: 15
From: Jacksonville FL
Belt length has nothing to do with it. I put a 1" shorter belt on mine without any problems. Have you removed all the AIR piping? You need to cap the pipes at the exhaust manifolds with a 1/2" pipe cap. Check all your vacuum lines and cap everything that you removed.
Pro
Joined: Mar 2007
Posts: 526
Likes: 1
From: San Angelo Texas
When I did mine I accidentally broke a plastic vacuum line right behind where the air pump was installed. There were two lines that were connected together at a large rubber fitting plugging into some little plastic piece. One of the lines went all the way to the vacuum canister in front of the driver's front tire. The other line (if I remember correctly) turns around and goes to the EGR valve. Check one of those. They may have worked great when they were new, but they kind of suck now. 1/8th rubber line at the parts store works wonders.
Happy hunting.
Happy hunting.
Thread Starter
Intermediate
Joined: Feb 2010
Posts: 34
Likes: 0
From: Silver Spring MD
I found it!! I forgot that i had changed the power coupler to the smooth one right before I started on my AIR pump Delete!
I had unplugged some plugs in the vicinity and not plugged them all back in!
AIR pump delete works great now! All hoses have been removed and everything else capped! Thanks for all the help!! Greatly Appreciated!!!
I had unplugged some plugs in the vicinity and not plugged them all back in! AIR pump delete works great now! All hoses have been removed and everything else capped! Thanks for all the help!! Greatly Appreciated!!!
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Instructor
Joined: Feb 2011
Posts: 114
Likes: 0
shorter belt
Nato
Instructor
Joined: Feb 2011
Posts: 114
Likes: 0
dayco lookup to length
Dayco's website has a program on it for belts that you just put in the length and ribs, and it spits out a bunch of part numbers.
Cool
http://www.accessdayco.com/dimensional-lookup
Cool
http://www.accessdayco.com/dimensional-lookup
Pro
Joined: Sep 2007
Posts: 713
Likes: 0
From: Commerce Twsp Michigan
SO i installed the new Air pump delete pulley and am now having problems. I think i messed up the engine rotation somehow. When i turn the car on it is fine, but when i hit the gas no matter what gear im in the engine bogs down and also miss fires!! Does anyone have any idea why this is happening? I was under the impression that the delete kit was a direct replacement with no problems and i cant seem to find a thread where any one else had my problem! any help would be appreciated!!
Hopefully someone on the forum can give us some answers.
Just to compare our problems, my stumbles when I move the throttle cam on the TB about 3MM. I have a 6 speed and when I drive it it stumbles at the beginning of acceleration in each gear.
Just to be clear when I deleted the air pump I also installed new Delphi injectors from Jon and installed a refurbished TPI intake system.
Pro
Joined: Sep 2007
Posts: 713
Likes: 0
From: Commerce Twsp Michigan
I found it!! I forgot that i had changed the power coupler to the smooth one right before I started on my AIR pump Delete! I had unplugged some plugs in the vicinity and not plugged them all back in!
AIR pump delete works great now! All hoses have been removed and everything else capped! Thanks for all the help!! Greatly Appreciated!!!
I had unplugged some plugs in the vicinity and not plugged them all back in! AIR pump delete works great now! All hoses have been removed and everything else capped! Thanks for all the help!! Greatly Appreciated!!!
I capped the pipes on the exhaust manifold and also the tube that runs right of the engine back to the Cat at the middle of the car.
I would love to find my stumble problem.
Last edited by RED UFO; May 2, 2011 at 06:03 PM.
Le Mans Master
Joined: Oct 1999
Posts: 6,366
Likes: 34
I posted the post above before I saw this post from you. Please explain what the power cupler is and what plugs did you find unplugged? As you can see from my previous post I did more than just deleting the air pump.
I called the pipes on the exhaust manifold and also the tube that runs right of the engine back to the Cat at the middle of the car.
I would love to find my stumble problem.
I called the pipes on the exhaust manifold and also the tube that runs right of the engine back to the Cat at the middle of the car.
I would love to find my stumble problem.
However, if you have an oxygen leak on your manifolds, say where the one way valves connect to the air injection system, you just found your problem
Advanced
Joined: May 2008
Posts: 96
Likes: 0
From: Milwaukee Wisconsin
I have a 86 and I was told to have it removed from the computer. I had done many other things like cam and headers injectors. So I did send the computer to a place I can't remember ( There name was something like tpis in Minn.) and they reprogramed it for all my changes. I don't know for sure if this is your problem but mine runs and goes great..
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
I posted the post above before I saw this post from you. Please explain what the power cupler is and what plugs did you find unplugged? As you can see from my previous post I did more than just deleting the air pump.
I capped the pipes on the exhaust manifold and also the tube that runs right of the engine back to the Cat at the middle of the car.
I would love to find my stumble problem.
I capped the pipes on the exhaust manifold and also the tube that runs right of the engine back to the Cat at the middle of the car.
I would love to find my stumble problem.
You can't do that.
If you remove the a.i.r. system you need to remove it ALL....cat included.
The cat cannot survive without its air supply. The air feeds o2 to the cat so it can lite-off and burn. If it cannot lite-off, it plugs off.
The exhaust gas enter the catylist and cake to its substrate when there is no o2 to allow them to burn and chemically change to water vapor.
Is this by chance an early OBD-II ????
if so the rear o2 sensor if freaking out because the cat is not doing anything. If there is an o2 sensor behind the cat....theres the problem.
I think that 90-91 are OBD-1 and only 1 o2 sensor, but want to be certain.
