Hello all. I have recently reinstalled my 3.8 back in my T. I removed it due to a blown head gasket and leaking rear main. I installed the engine and got it started but the idle will not come down. I have tried setting my TPS with my snap on modis and the voltage jumps between 0.00 and 4.36 without me even adjusting the sensor. Also when the car is started the IAC reads 0. So no mater how much I have moved the TPS it doesn't adjust. I have tried replacing the TPS and still no luck. The car is idling at 3000 RPM's. Any suggestions would be great. Thanks
New Engine
- Thread starter rbarragan
- Start date
You first need to adjust the IAC.... Back out the idle screw until flush with throttle body. Now turn it in 2.5 turns..... Turn on key, engine off, adjust the TPS to .42v.... Now start the car. This should set you in almost perfect. If IAC continue to be high then you have a vacuum leak. TPS does control your idle. It is for throttle response. Also if you are a new guy to the buick seen then I suggest you do some reading.
www.gnttype.org
http://www.vortexbuicks-etc.com
And here on this site.
Good luck and let us know how things go!&
'87 Turbo T w/E85, 224/224, ported iron heads and intake, 80 lbs injector, TE45A, GEN II, TT and EXTENDER EXTREME G, XP Double pumper and something secret, 86 T-TYPE (Kenne Bell test car) and '11 Tundra Limited Sent from my iPhone using Turbobuick
www.gnttype.org
http://www.vortexbuicks-etc.com
And here on this site.
Good luck and let us know how things go!&
'87 Turbo T w/E85, 224/224, ported iron heads and intake, 80 lbs injector, TE45A, GEN II, TT and EXTENDER EXTREME G, XP Double pumper and something secret, 86 T-TYPE (Kenne Bell test car) and '11 Tundra Limited Sent from my iPhone using Turbobuick
- Joined
- Feb 18, 2006
TPS jumping between 0 & 4.36 is a problem.
Did you get your grounds hooked up good on the back of passenger head or intake?
RL
Did you get your grounds hooked up good on the back of passenger head or intake?
RL
That's what I was thinking. I was thinking the grounds aren't grounded properly. I painted the block but sanded off the paint in the ground locations. CGASTON thanks for the advice but I am getting the feeling you did not read my entire post I have tried what you are suggested as I have explained on my first post.
IAC is a measure of the Number of attempts to move the IAC valve. Zero means the computer isn't moving it at all to maintain idle or the throttle blades are too far open.
Grounds should be zero or close to it.
rbarragan said:
I have read your thread all the way. You said you adjusted the TPS and never once did you say you have adjusted the IAC. But it is a mod point. So have you checked for a bad connection or bust wire on the IAC? I had one on my 86 that cause the IACs to either adjust to 159 or zero.... Nothing else. But also I have seen the idle screw screwed in a lot causing the high idle. With that, the IACs were crazy and wouldn't adjust no matter how I moved/adjusted the TPS. I also recommend what Dave said. Not trying to argue, but sometimes it is the simplest things that fix the problem. And on a ground I would like to think that there are other electrical issues that are noticeable.
'87 Turbo T w/E85, 224/224, ported iron heads and intake, 80 lbs injector, TE45A, GEN II, TT and EXTENDER EXTREME G, XP Double pumper and something secret, 86 T-TYPE (Kenne Bell test car) and '11 Tundra Limited Sent from my iPhone using Turbobuick
CGASTON said:
Sorry, I meant Rick.... To many turbo names...
'87 Turbo T w/E85, 224/224, ported iron heads and intake, 80 lbs injector, TE45A, GEN II, TT and EXTENDER EXTREME G, XP Double pumper and something secret, 86 T-TYPE (Kenne Bell test car) and '11 Tundra Limited Sent from my iPhone using Turbobuick
Sorry I meant Rick.
'87 Turbo T w/E85, 224/224, ported iron heads and intake, 80 lbs injector, TE45A, GEN II, TT and EXTENDER EXTREME G, XP Double pumper and something secret, 86 T-TYPE (Kenne Bell test car) and '11 Tundra Limited Sent from my iPhone using Turbobuick
'87 Turbo T w/E85, 224/224, ported iron heads and intake, 80 lbs injector, TE45A, GEN II, TT and EXTENDER EXTREME G, XP Double pumper and something secret, 86 T-TYPE (Kenne Bell test car) and '11 Tundra Limited Sent from my iPhone using Turbobuick
Your engine is off right? That is why you wont get any IACs... Also your TPS looks good, that is if you have the pedal to the floor.
'87 Turbo T w/E85, 224/224, ported iron heads and intake, 80 lbs injector, TE45A, GEN II, TT and EXTENDER EXTREME G, XP Double pumper and something secret, 86 T-TYPE (Kenne Bell test car) and '11 Tundra Limited Sent from my iPhone using Turbobuick
