Rebuilt TBI
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Joined: Jan 2006
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From: CA
Car: 1989 camaro
Engine: 305 tbi
Transmission: 700r4 89
Axle/Gears: 2.73 :(
Rebuilt TBI
I went to a mechanic and they said they should rebuilt my throttle body couple questions
1.) is this something i could do (Im some what new to cars) with a manual or step by step quide?
2. How much would a whole new throttle body cost?
3. Is $400 about what this should cost?
1.) is this something i could do (Im some what new to cars) with a manual or step by step quide?
2. How much would a whole new throttle body cost?
3. Is $400 about what this should cost?
Originally Posted by Steved1257
Where did you buy this rebuild kit and how much was it??
Any decent parts shop in the US should have one,at about a third of the swedish prices or so.
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From: Ohio, near columbus
Car: 89 iroc-z
Engine: 305tpi
Transmission: wc-t5
Axle/Gears: 10 bolt 3.08 posi (4 now)
at advanced they cost about 55$ i beleive. I haven't done mine yet but, it definetly doesn't look complicated to me so if i were you i wouldn't be to worried.
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Originally Posted by tdmarz22
how much was the rebuild kit and how long did it take you?
.Took two days at a really serene pace with a lot of coffee breaks,if I would do it again today it would take 4 hours tops. Senior Member
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From: Beech Bluff,TN
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08
autozone has rebuild kits with or without the diaphram with is about $35...without is about $6..go to their website and enter your car then look for fuel delivery<not exact words) then find TBI gasket kit.....
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From: colorado
Car: 1992 Trans/am convertible
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 2.73 drum WS6
I got a kit from autozone for arround 30 bucks. It had the fuel preassure regulator diaphragm the spring too. ALl the gaskets to re-build the top part of it.
You really don't need to re-build the bottom part of it (throttle blades etc.) I would buy new one, or get one from the JY if you need it. You can get the rest of the stuff you need in the autozone kit.
Also, I would recomend getting new injectors too. My friend showed me how to do it and it was very easy. Just pay attention of where the stuff goes.
When you fit it back on, make sure to check for leaks. If everything is ok, you are ready to go.
Just pay attention to how everything is removed and than put it back in the same way.
Good luck.
You really don't need to re-build the bottom part of it (throttle blades etc.) I would buy new one, or get one from the JY if you need it. You can get the rest of the stuff you need in the autozone kit.
Also, I would recomend getting new injectors too. My friend showed me how to do it and it was very easy. Just pay attention of where the stuff goes.
When you fit it back on, make sure to check for leaks. If everything is ok, you are ready to go.
Just pay attention to how everything is removed and than put it back in the same way.
Good luck.
Thread Starter
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Joined: Jan 2006
Posts: 33
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From: CA
Car: 1989 camaro
Engine: 305 tbi
Transmission: 700r4 89
Axle/Gears: 2.73 :(
alright thanks a bunch do u think it would be easy for even a person who isnt super good with cars(im not an idiot) just not a lot of expierence
Joined: Nov 1999
Posts: 1,790
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From: Monroe,NC
Car: 90 Formula
Engine: 305
Transmission: 700R4
Axle/Gears: 9 bolt/3.27
I just rebuilt mine yesterday. Got my kit from Advance for just under $40 and it came with everything. Kit comes with a pretty good diagram of how the TB goes together. As long as you keep all the parts organized when you take them out you shouldn't have a problem. Be careful to keep pressure on the regulator spring when replacing the diaphram.
Thread Starter
Junior Member
Joined: Jan 2006
Posts: 33
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From: CA
Car: 1989 camaro
Engine: 305 tbi
Transmission: 700r4 89
Axle/Gears: 2.73 :(
how long did it take you and how long do u think it would take a guy that isnt quite as mechanically inclined like me
Joined: Nov 1999
Posts: 1,790
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From: Monroe,NC
Car: 90 Formula
Engine: 305
Transmission: 700R4
Axle/Gears: 9 bolt/3.27
Took me little over an hour and that was draggin around. Just take your time and don't worry about how long it takes, just about getting it right.
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From: Buckhannon, WV
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears
Any particular reason it needs rebuilt? Unless it's leaking there really isn't much to go wrong with a TB.
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Joined: Jan 2006
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From: CA
Car: 1989 camaro
Engine: 305 tbi
Transmission: 700r4 89
Axle/Gears: 2.73 :(
No not really my mechanic guy(who im starting not to trust anymore) told me that i need to rebuild the Throttle body which is gonna cost $400 which is starting to seem a little insane from what im hearing. I think he is a scam guy but not sure thats what i was trying to find out
what do u think is he a scammer?
what do u think is he a scammer?
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From: Buckhannon, WV
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears
RUN!!!! don't walk RUN!!!!! away from that mechanic. You can get a brand new big bore Holley for way less than that. The actual throttle body unit is pretty simple, you have your throttle plates, injectors and IAC valve and thats it for moving parts. If the car is running, not leaking, and idling at a normal rpm then everything is fine. Let us know what's wrong with the car and we'll tell you where to look to fix it.First off, find another mechanic.
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From: Beech Bluff,TN
Car: 1991 Trans Am Convertible
Engine: 305 TPI
Transmission: T5
Axle/Gears: 3:08
I'm rebuilding mine this weekend just because I had a credit at the zone and I bought the kit..Just to freshen it up 200K on it so I will replace all gaskets and the inj rubbers and screens and the diaphram...and while I'm in there I'll make my fpr adjustable...just wish i had an inline guage.
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Joined: Apr 2004
Posts: 446
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From: Pennsylvania
Car: 1989 Camaro RS
Engine: 350 Holley TBI Personally Tuned
Transmission: 5 Speed
When you take the TB off the car check the underside of the TB in all the vacuum routes and make sure none of the vacuum routes or vacuum hose connections on the front of the TB are clogged, Ive seen some really nasty clogged TB vacuum ports and routes.
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Joined: Dec 2000
Posts: 408
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From: Chesterfield, VA
Car: '86 IROC, black and sharp
Engine: 305 tpi, bone stock
Transmission: 700r4
Axle/Gears: 3.42 pos w/rear db
I bought a rebuild kit for my son's RS awhile back (he was 18 at the time). I was going to help him rebuild it the next weekend but when I came home from work the next day he'd already pulled his off, ground off some of the offending (to him anyway) ridges/air flow restrictions around the top of the TBI unit, torn it down, cleaned it up, rebuilt it, reinstalled it and test drove the car. He doesn't have a lot of experience either, but he got it done.
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From: austin tx
Car: '92 firebird
Engine: 305tbi
Transmission: th350
Axle/Gears: moser 28 spline 3.73 eaton posi
I had a throttle body rebuilt and the injectors ultrasound cleaned and rebuilt(137K miles and didn't need flow matching) for under 200.00 a couple of years ago.
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Joined: Mar 2006
Posts: 305
Likes: 84
From: Arizona
Car: 82 Corvette - CFI
Engine: 383 - Renegade, AFR 195, Bullet cam
Transmission: 700R4 - 3,200 Yank TC
Axle/Gears: 3.31
Here's a good place that does excellent work and is very knowledgable. I've had several sets of injectors done by them. Their prices are pretty good also.
Accurate Injector Service
2775 Squall King Drive
Lake Havasu City, AZ 86404
(928) 486-4914
Fax (928) 855-8411
Accurate Injector Service - Fuel Injector Cleaning - Fuel
Injector Balancing
How bad is your TB shaft(s)? If they wooble, they need to be bushed because they are causing a vacuum leak, which will affect your idle.
Accurate Injector Service
2775 Squall King Drive
Lake Havasu City, AZ 86404
(928) 486-4914
Fax (928) 855-8411
Accurate Injector Service - Fuel Injector Cleaning - Fuel
Injector Balancing
How bad is your TB shaft(s)? If they wooble, they need to be bushed because they are causing a vacuum leak, which will affect your idle.
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GeneralIesrussi
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Sep 3, 2015 03:23 AM





Autozone kit , clean work area, and care when disassembling and you are in business for less than $50.00.