Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 85 chevy tps test results
View Single Post
  #6 (permalink)  
Old 07-09-2012, 05:49 PM
85impala 85impala is offline
Registered User
Last photo:
Join Date: Jul 2012
Location: chicago
Posts: 65
Wiki Edits: 0

Thanks: 21
Thanked 0 Times in 0 Posts
Originally Posted by LATECH View Post
the voltage should be at .58 volts, with the throttle plates closed at curb idle, not on the fast idle cam or with the idle speed controller ram pushing the throttle open.
When you open the throttle wide open the value should be at 4.90 volts .
1.0 volts at wide open throttle is too low, not sure what is going on there.
Without enough throttle posisition sensor voltage , hitting wide open throttle will be somewhat lean, and shy on timing as RPM s build.
Also it may set a check engine light,as value may constantly be to low for engine rpms.
Thanks for your reply LATECH.
It sounds like its wayyy off according to your statement, should I adjust it at the hole by the accelerator pump lever (I think that's what it's called )? Or should I install a replacement?

I actually have a few extra dualjet and quadrajet tps's I could pop in there so I wouldn't have a problem replacing it.

Thanks again
Reply With Quote