How to change throttle position sensor on Quadrajet 4bbl on 87' Firebird LG4, 305
Member
Joined: Sep 2003
Posts: 248
Likes: 4
From: SE AZ
Car: 1990 Corvette, 1985 C-10 1979 Subun
Engine: 350, 406 HSR
Transmission: manual, 200 4r
Re: How to change throttle position sensor on Quadrajet 4bbl on 87' Firebird LG4, 305
Airhorn has to come off (top). Slip old sensor out and new one in. Will need to be adjusted to spec voltage, which requires the special wrench to turn screw and a volt meter to monitor.
Joined: May 2004
Posts: 5,338
Likes: 73
From: Lexington, SC
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
Re: How to change throttle position sensor on Quadrajet 4bbl on 87' Firebird LG4, 305
instead of the 'special' wrench you can use a roll pin, lightly tapped over the adjustment screw. when installing new tps you can use some heavy grease to hold the plunger in.
Junior Member
Joined: Apr 2007
Posts: 72
Likes: 0
From: Fort Mcmurray, AB
Car: 87 Monte Carlo SS
Engine: Tweaked out 350
Transmission: tweaked 200r4
Axle/Gears: 3.73
Re: How to change throttle position sensor on Quadrajet 4bbl on 87' Firebird LG4, 305
Hi guys....Go to you local Model RC Hobby store and pickup either 2.5mm or 3mm hex head socket bolts...perfect fit!! First you need to get the aluminum plug out that covers the adjustment screw! When you replace the airhorn...make sue the screw is backed out, carefully install the horn over top....you will need to use a knife blade or something thin to push the plunger down....just slide it in under the horn and wriggle it around...it's a pain, but it will go....careful not to damage the gasket!
good luck!
good luck!
Last edited by RodsRideSS; May 13, 2007 at 02:11 PM.
Thread
Thread Starter
Forum
Replies
Last Post
colton_carlson
Firebirds for Sale
7
Mar 8, 2019 12:21 PM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM
