I've had a sticky throttle for about 6 months to a year now and I finally noticed when I had my TB off that the passenger side butterfly is hitting the TB bore when fully closed. Can this be shaved off slightly or is there an adjustment to correct this? It's getting worse and worse.


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1988 TA 300+hp 350 w/ TBI and Holley TB unit, Holley projection intake,
WC T-5, 3.42 gears w/ Auburn posi. MSD 6A, edelbrock TES headers, dynomax 3" cat and cat-back system, ACCEL coil, polyurethane bushings all around, aluminum driveshaft, Mr. Gasket open air cleaner.

1993 S-10 w/ 4.3L V6 TBI, slightly bigger cam, Mild polish job and 3 angle valve job on heads, Edlebrock TES headers, Dynomax cat back, MSD 6A, ADS chip

2000 Kawasaki KX 125

 

anybody got any ideas!?

 

Hmmm... It's getting worse? Are you sure it's the blade and not the linkage? That's weird. Are the screws that hold it to the shaft still in it? I can't imagine why it'd be getting worse unless you're getting a varnish buildup or something. No idea, really. You could probably use a light grit paper and sand down the bore or the edge of the blade where it's sticking as long as you don't take a lot off.

Let us know how you make out,
Steve

 

Had the same problem after installing a new intake. I used the idle stop screw to get rid of it. Turned it in about 1/4 turn, didn't affect the idle, but stopped the sticking. You could try it.

 

I had the same problem with my Holley 670. The throttle blades would rub on the TB before they were fully closed.

I don't remember exactly how I fixed it, but I remember filing was involved. I can see bare metal around the edges where the red paint used to be. Just be careful not to take off too much material. You can't put it back!

Yet another reason to buy Holley parts, right?

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'92 RS, ZZ4 10:1 350, Edelbrock 6085 heads, Crane 208/214 467/482 cam, GM/LT4 1.6 true roller rockers, Holley Projection TBI intake, Holley 670 TBI, SLP/Jet-Hot 1-5/8" headers, Catco 3" cat, Flowmaster 3" catback, Hughes 2500 stall converter, stock 700R4, Auburn Pro posi w/3.42, 17x9" SS rims w/BFG tires, Medium Quasar Blue w/white SS stripes, 48,000 miles....

 

I have seen excessive wear in the throttle shaft bores causing misalignment of the plates which can cause the sticking you are seeing. Only fix, I think, is new parts.

 

I got the "Truckin'" magazine where they rebuilt a TBI. I'll scan it in when I get home.

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-Tas
'89 Formula WS6

305, TBI, auto, 14x3 chrome flat based open element with K&N, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Super GRK_Taz World
EFI & Intake Options
AOL IM: superGRtaz
ICQ 82881207

 

i would be interested in that article too. iv often wondered how to remove the blades, and shaft.
Turbo city said id have to shave the throttle linkage off then re weld it when putting it back together.


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Gestapo?

ENGINE SPECS:
305 TBI,Open Element,K&N 14x3,Hypertech Stage I,160 Deg. Thermostat,454 GM TBI

STEREO SPECS:
JVC Kalmeleon kdlx3,Infinity Kappa 2way 6x9's,PPI 4x6 Coaxials,PPI PC2400 AMP @ 2ohm
DEI Studio 12" 4ohm DVC,Custom Box:Exactly 1 Cubic Foot

 

Actually you can take it out without messing anything up. Unscrew the screw on the passenger side part of the shaft that holds the TPS tab and return spring, take out the passenger side spring. Unscrew the throttle blades from the shaft and just slide it out from the drivers side.

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88 firebird formula
350 Vortec TBI
214int/224exh, .471int/.491exh
Edelbrock headers
SIX-speed
Eats LS1's with a 2.73 open rear and 2 1/4 stock catback

My Formula

 

That sounds cool, I can always use new articles.

By the way guys, Vader on the General Engine Tech board gave me some good tips and instructions, check it out:
https://www.thirdgen.org/messageforu...ML/002313.html