TPS Adjustment - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Twisted Liquid · 10-10-2003, 05:26 PM

87 Chevy Suburban 350/700R4 with factory TBI. I used to have the specific on how to adjust the throttle position sensor, but cant seem to find them. Can anyone help me out?

Got the voltmeter, but can't seem to find the proper voltage reading and/or the sequence for adjustment.

Any help is appreciated.

Geoff

**swervin ervin** · 10-10-2003, 05:35 PM

I'm pretty sure all 87's had non adjustable TPS's. I know the one on my 87 van was. It's just a matter of removing the old and screwing on the new one.

Twisted Liquid · 10-10-2003, 05:48 PM

OK. How can I lean out the mixture at idle??

**swervin ervin** · 10-10-2003, 05:53 PM

You can't. Everything is computer controlled. No adjustment you can do. You can't even adjust the idle speed. I can't stand the mess myself. I'm a hands on type of guy. I can't take it not being able to adjust anything.

toytruck · 10-10-2003, 05:59 PM

Go to WWW.thirdgen.org It shows you how there. Plus everything else you ever want to know about tuning and modifying your TBI. Very cool!

toytruck · 10-10-2003, 06:01 PM

Ervin you can play with thse TBI's. Go check out the site

Twisted Liquid · 10-10-2003, 07:31 PM

That's it!. I just couldn't remember the voltage setting, but the process is pretty simple. Thanks a bunch for the help!

10-10-2003, 05:26 PM	#1
Twisted Liquid Registered User Join Date: Jun 2003 Posts: 34	TPS Adjustment 87 Chevy Suburban 350/700R4 with factory TBI. I used to have the specific on how to adjust the throttle position sensor, but cant seem to find them. Can anyone help me out? Got the voltmeter, but can't seem to find the proper voltage reading and/or the sequence for adjustment. Any help is appreciated. Geoff

10-10-2003, 05:35 PM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	I'm pretty sure all 87's had non adjustable TPS's. I know the one on my 87 van was. It's just a matter of removing the old and screwing on the new one. __________________ Mike 1985 Chevy C-10

10-10-2003, 05:59 PM	#5
toytruck 5-7 dropped 87 CC Dually Join Date: Sep 2003 Location: bay city mi Posts: 326	Go to WWW.thirdgen.org It shows you how there. Plus everything else you ever want to know about tuning and modifying your TBI. Very cool! __________________ I rather be in my 77 Sanger Picklefork Jet Hydro!

10-10-2003, 06:01 PM	#6
toytruck 5-7 dropped 87 CC Dually Join Date: Sep 2003 Location: bay city mi Posts: 326	Ervin you can play with thse TBI's. Go check out the site __________________ I rather be in my 77 Sanger Picklefork Jet Hydro!

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10-10-2003, 05:48 PM	#3
Twisted Liquid Registered User Join Date: Jun 2003 Posts: 34	OK. How can I lean out the mixture at idle??

10-10-2003, 05:53 PM	#4
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	You can't. Everything is computer controlled. No adjustment you can do. You can't even adjust the idle speed. I can't stand the mess myself. I'm a hands on type of guy. I can't take it not being able to adjust anything.

10-10-2003, 07:31 PM	#7
Twisted Liquid Registered User Join Date: Jun 2003 Posts: 34	That's it!. I just couldn't remember the voltage setting, but the process is pretty simple. Thanks a bunch for the help!



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