Help: TPS reading is getting weird - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


ECUs and Tuning Discuss Engine Management, Tuning, & Programming

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 02-17-2011, 05:46 AM   #1
Junior Member
Thread Starter
iTrader: (2)
 
Join Date: Sep 2009
Location: singapore
Posts: 228
Total Cats: 2
Default Help: TPS reading is getting weird

After installing VTPS in my Miata, the TPS Calibration for 0% ADC is 294 and 100% ADC is 2896 and that was 6 months ago.
Last week, my car start stumbling on cruise and i found that that mysteriously, the TPS is only reading 50% when I full throttle. So i readjusted the TPS and last week the TPS Calibration for 0% ADC is 156 and 100% is 1398.
Just today, my car started stumbling again, and i found that my tps is reading 50% again!!!. So i readjusted again, and the TPS Calibration for 0% ADC is 126 and 100% is 630.

Can you tell me where the problem is likely to be? The TPS or the adaptronic output?
nismo502 is offline   Reply With Quote
Old 02-17-2011, 06:16 AM   #2
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,107
Total Cats: 518
Default

Is it loose?
curly is offline   Reply With Quote
Old 02-17-2011, 06:32 AM   #3
Junior Member
Thread Starter
iTrader: (2)
 
Join Date: Sep 2009
Location: singapore
Posts: 228
Total Cats: 2
Default

Quote:
Originally Posted by curly View Post
Is it loose?
Thats what i thought initially. I checked, No it was not loose.
nismo502 is offline   Reply With Quote
Old 02-23-2011, 10:24 PM   #4
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

bad wiring in tps or bad solder joints?
Techsalvager is offline   Reply With Quote
Old 02-23-2011, 10:39 PM   #5
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,872
Total Cats: 1,790
Default



Still getting 5v
Braineack is offline   Reply With Quote
Old 02-24-2011, 01:22 AM   #6
Junior Member
Thread Starter
iTrader: (2)
 
Join Date: Sep 2009
Location: singapore
Posts: 228
Total Cats: 2
Default

i figured its the TPS, i am getting 5v at the connector and 0.2v on close throttle and 1v at full throttle.
Waiting for my BMW tps to arrive in Singapore and its taking agesssssss
nismo502 is offline   Reply With Quote
Old 02-24-2011, 09:37 AM   #7
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,872
Total Cats: 1,790
Default

probably the case, if at WOT you're only getting 1v to the output that's the issue.
Braineack is offline   Reply With Quote
Old 02-25-2011, 01:51 PM   #8
Junior Member
Thread Starter
iTrader: (2)
 
Join Date: Sep 2009
Location: singapore
Posts: 228
Total Cats: 2
Default

Guys, would anyone know if the NB tps would fit the 1990 NA?
nismo502 is offline   Reply With Quote
Old 03-01-2011, 06:49 AM   #9
Junior Member
Thread Starter
iTrader: (2)
 
Join Date: Sep 2009
Location: singapore
Posts: 228
Total Cats: 2
Default

just in case someone has the same problem. Yes, changing the TPS solves my problem.
nismo502 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 58 12-13-2017 10:04 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Bizarre connection issue? nick470 MEGAsquirt 1 09-30-2015 11:32 PM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 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 06:27 AM.