1986 2.5L runs if fuel is trickled in TBI

Tiny
AUTO3693
  • MEMBER
  • 1986 OLDSMOBILE
I have a 1986 Olds with a 2.5L TBI. If I trickle in fuel, car will start and continue to run as long as fuel is poured in. Fuel pump pressure is correct. There is 12 volts to the red wire at the injector. If I hotwire the injector it sprays and the car will run. The injector draws about 6.5 amps. The check engine light will not come on with the ignition switch on. The check engine light will not flash any codes. The EMC fuse is good. Is the EMC bad? Is the injector load too high? Any help would be good! Thanks in advance.
Do you
have the same problem?
Yes
No
Friday, March 16th, 2007 AT 9:49 PM

2 Replies

Tiny
RASMATAZ
  • MEMBER
It sounds like the PCM quad driver for the injection not being grounded to complete the circuit to the injectors
Was this
answer
helpful?
Yes
No
Sunday, March 18th, 2007 AT 11:02 PM
Tiny
AUTO3693
  • MEMBER
Rasmatazism, thanks for the responce.
Where is the PCM (?) Driver and how do I test it? If I replace the EMC will this correct the problem? They can be picked up at a junk yard for $25. I assume it is pulsing the negative side of the injector, since I have 12V to the positive.
Was this
answer
helpful?
Yes
No
Monday, March 19th, 2007 AT 11:51 AM

Please login or register to post a reply.

Recommended Guides