TPS or MAF?... - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 09-17-2004, 09:22 PM   #11
Senior Member
Posts like a Camaro
 
padgett's Avatar
 
Join Date: Jul 2003
Location: Orlando, Florida
Posts: 872
Thanks: 0
Thanked 0 Times in 0 Posts
padgett is on a distinguished road
Default

First question: are the rpms really jumping or is it just the tach moving ? A dirty IAC cal cause erratic idle and stalling like you describe but will usually be a swing rather than a jump.
padgett is offline   Reply With Quote
Old 09-18-2004, 10:46 PM   #12
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Jun 2004
Location: Maine USA
Posts: 151
Thanks: 0
Thanked 0 Times in 0 Posts
smoosh is on a distinguished road
Default

i dont think that the RPM'* are really jumping that much..but that tach meter is flying....

stalled on me 4 times on the way to work (20 kms)
smoosh is offline   Reply With Quote
Old 09-18-2004, 10:55 PM   #13
Senior Member
True Car Nut
 
Join Date: Apr 2004
Location: Three Oaks, Michigan
Posts: 4,879
Thanks: 0
Thanked 0 Times in 0 Posts
opensourceguy is on a distinguished road
Default

Now this is sounding more and more like the CPS. That would cause the stalling, and if falsly readying, could be causing the rpm jumps.. and the rpm jumps could be it loosing signal to the ICM, which cause such a brief stall the car recovers.

-justin
opensourceguy is offline   Reply With Quote
Old 09-18-2004, 11:41 PM   #14
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Jun 2004
Location: Maine USA
Posts: 151
Thanks: 0
Thanked 0 Times in 0 Posts
smoosh is on a distinguished road
Default

stupid ?...CPC?...lol

opensourceguy and me were discussing...and he told me that i need to mention some more info..

when i get in speed (30 mph or so)..when is seems like the engine "misses" badly..like the battey voltage will go down to 8- volts...and the lights will dim...

and at idle..the battery voltage tach..wobbles in the middle tach quite a bit
smoosh is offline   Reply With Quote
Old 09-19-2004, 05:14 AM   #15
Senior Member
Posts like a Supercharger
 
Join Date: Mar 2004
Location: Nanaimo BC
Posts: 190
Thanks: 0
Thanked 0 Times in 0 Posts
projectheavytouring is on a distinguished road
Default

mine is doing something similar I thought it was the TC screwing around .. so I started driving around town in 2nd ... and it would still do it

if it'* happening after a bump or turn normaly(or started that way and just got worse) ... I would bet it'* the MAF... easy way to test ... start car in driveway ... when it'* at operating temp take a screwdriver and lightly tap the maf with the handle... if the car coughs and sputters etc .. the maf needs to be replaced

it could be some of the other things listed by the other members ... but my bet is MAF as it sounds so similar... only problem is I don't have a tach or volt gauge at the moment (speedo and fuel stock WEEEE) so I couldn't tell you if it'* exactly the same
projectheavytouring is offline   Reply With Quote
Old 09-19-2004, 03:22 PM   #16
Senior Member
True Car Nut
 
Join Date: Apr 2004
Location: Three Oaks, Michigan
Posts: 4,879
Thanks: 0
Thanked 0 Times in 0 Posts
opensourceguy is on a distinguished road
Default

smoosh: did you clean up all the connections last night? Today, i'll take a pic of the wires which hook up from the ICM to Coil pack and the coils to the plugs.. that way you can confirm you've got everything hooked up right, and possibly elimate that miss like it did me.


-justin
opensourceguy is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Maf & tps texasssei Pontiac 9 06-14-2011 08:49 PM
TPS voltage 2x4 1987-1991 4 08-02-2003 02:53 PM
TPS and nitrous Allmachtige Forced Induction 3 03-05-2003 07:25 PM
O2 sensor and TPS willwren 1992-1999 11 10-24-2002 11:29 AM
What do you think about this, TPS enhancer? Daron97SSE 1992-1999 9 10-02-2002 12:26 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:44 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.