The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

Aftermarket throttle body/tuning question

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Funfettie

10+ Year Contributor
419
2
Sep 19, 2011
Menomonie, Wisconsin
Good evening,
So the car started after 18 months of building the other night. (never thought this day would come!) but anyways, Im having this issue where the car starts up right away, and idles nicely for about 10 seconds: then the wideband creeps from 14 to 24 and the engine kills.

So something is causing the engine to lean out. ECMlink is throwing a 120 TPS error code, but it reads the throttle position just fine. What could be causing this??

car is fully built, ready to push 600 to the wheels on E85. The car does have an aftermarket throttle body (ebay/godspeed 102mm(4")) and it has only the TPS on it. Could it maybe be something to do with not having all those other sensors?

the cars front o2 sensor wire on the ecu was spliced for the LC1 wideband. the car ran with both feeding the ecu with data, but i then unplugged the oem sensor to have just the wideband feeding the ecu with data, but the car ran the same. Any ideas? I heard it could be possible that the TPS shares a ground with the FIAV, this could be causing issues?

too many questions.. haha thanks guys and gals!
~Funfettie~
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest Classifieds

  • For sale 2g 2G Mishimoto Radiator & Fan Shroud
    2G Mishimoto Radiator & Fan Shroud $200 + shipping and paypal feesYou must be registered to...
    • jersygsx
    • Updated:
    • Expires
  • For sale 2g 2G Power Window Switches ( tested and hardware included )
    2G Power Window Switches $55 + shipping and paypal fees* Tested 6/2/26 * Hardware included *...
    • jersygsx
    • Updated:
    • Expires
  • For sale VIRGIN 4G63 6-BOLT TURBO HEAD
    Came off a virgin stock AWD Auto 1G DMS (91), also have matching block and crank which are also...
    • The_Partout_Spot
    • Updated:
    • Expires
  • For sale 1G DSM 4G63 6-BOLT TIMING COVER
    Used, see condition in photos. Buyer covers shipping / fees.
    • The_Partout_Spot
    • Updated:
    • Expires
  • For sale Garage clean out
    Changing setups on the car and getting rid of some stuff as well that's been laying around. Will...
    • 92GSXtacy
    • Updated:
    • Expires
Back
Top