Anyone have a problem with their Holley TB springing back into place? If I stab the throttle the blades stay open...after that Im constantly at 2500+ RPM's and my idle is at 2700!

I guess I have to get a throttle return spring.....

Anyone else have a solution?

 

I thought I read somewhere someone had a problem....hmm.

 

they have poorly engineered IAC passages that leak air.. so ive heard.

 

The blades actually stick open due to pretty **** poor manufacturing. They leave alot of play in the shaft using those fancy bearings that aren't needed which will allow the shaft to move from side to side a bit causing it to contact the sides of the bore, hanging open on you.

-Shannon

 

So would a throttle return spring work ya think?

 

Yes, that should work. Just a spring run from the linkage to the intake or something similar. Only thing is if it's sticking badly, you might be wearing the blades/ bores of the TB excessivley.

-Shannon

 

No problems here

 

I've heard nothing but bad about the Holley TB's. Some mechanical. But mainly their customer service.

 

You would think that the Holley being the highest priced T.B. on the market that they would be the best?
Guess you don't always get what you pay for !

 

Check on the linkage side of the throttle body. There are actually three different holes in the body of the TB that you can locate the "fixed" end of the return srping in. Moving the end of the spring to a different hole can increase or decrease the return pressure and might help. You have to remove the throttle blades, and pull the shaft out slightly to get the spring loose enough to move the spring to a different hole.

I was never really happy with my 58mm Holley... fortunately I got it when it was only $350. The blades had way too much clearance around the edges, and since the blades are the only thing that hold the shaft in the body, it makes it really sloppy. Also makes it hard to get the idle right.

And, there is a metal rotation "stop" bar that sits in a groove on the side of the billet aluminum linkage quadrent. On mine, that metal stop would "slip" slightly in the quadrent, making the open and closed TPS voltage erratic (my MoTeC needs the exact voltages programmed into it).

I had so many problems I borrowed a BBK 58mm and it seemed to work much better. I ripped the Holley completely apart and hand fitted all the parts that I could, including enlarging the blades and hand lapping them to exactly fit in the bores. Then I pinned the metal "stop" lever to the quadrent. So far it seems a lot better, but I would NEVER buy another Holley TB.

 

Bad experience here as well, mutiple TPS sensors, sanded lightly around the blades (use loctite to reassemble), tried throttle return spring, relubed the shaft, etc. Your best bet is to get rid of it and take your loses and get a stocker that is bored. I went back to the stock unit and have not had a problem since. The Holley units are shinny though but looks can be decieving!!!!!!
And did I mention there customer service. They try and give you some generic answer and attempt to make you feel stupid. If they knew anything about customer service this product would have a better reputation. If you are set on keeping this, i have seen on ebay TPS kits that are all ready slotted and may allow some flexibility with your idle concern but from experience the TPS are very sinsitive and can be damaged easily.