08-20-2016, 01:56 AM
(This post was last modified: 08-20-2016, 01:57 AM by Happycampsterers.)
I have done the following troubleshooting test to help identify what is causing this Tracker to stop running shortly after it is started. It will run for 2-3 seconds (sounds strong, no miss).
Yes it was a barn find, not running for over a year, blown head gasket, repaired 150 psi in all cylinders cold...Cat was completely clogged..exhaust path clear now..
Fresh fuel and filter, cap, rotor and wires..
Fuel pressure at filter 38 psi with good volume.
Fuel pressure at rail 38 psi.
Clean fuel injectors all 4 pass spray test, and NOID test when running at start. Hot foot helps, engine will continue to run with test fuel...
TPS-pin 2 @ 50 ohms throttle stop, infinity @ slightly open throttle
pin 3 @ ~ 1K ohms throttle stop, increases linearly to ~ 4k ohms
pin 4 @ ~ 5k ohms
DTC jumper in gives code 12 and DTC jumper out CEL comes on @ key on and goes off after start.
All pins back probed @ ECU tested out accordingly with the "92-95 1.6L 16v ECU static test USA/Canada OBD1" data provided with this site (THANK YOU!) with the exception of pin B12, this pin at ECU is always 0v. Static test data says it should be B+ key on and B+ to 0v running varied by throttle position. Is this a bad ECU? Or is the issue downstream of this output? How do I troubleshoot this condition?
Yes it was a barn find, not running for over a year, blown head gasket, repaired 150 psi in all cylinders cold...Cat was completely clogged..exhaust path clear now..
Fresh fuel and filter, cap, rotor and wires..
Fuel pressure at filter 38 psi with good volume.
Fuel pressure at rail 38 psi.
Clean fuel injectors all 4 pass spray test, and NOID test when running at start. Hot foot helps, engine will continue to run with test fuel...
TPS-pin 2 @ 50 ohms throttle stop, infinity @ slightly open throttle
pin 3 @ ~ 1K ohms throttle stop, increases linearly to ~ 4k ohms
pin 4 @ ~ 5k ohms
DTC jumper in gives code 12 and DTC jumper out CEL comes on @ key on and goes off after start.
All pins back probed @ ECU tested out accordingly with the "92-95 1.6L 16v ECU static test USA/Canada OBD1" data provided with this site (THANK YOU!) with the exception of pin B12, this pin at ECU is always 0v. Static test data says it should be B+ key on and B+ to 0v running varied by throttle position. Is this a bad ECU? Or is the issue downstream of this output? How do I troubleshoot this condition?