Once again, 88 TBI, EGR problem - poor performance, misfiring, etc.

At idle - no vac. At CRAWLING speeds, just the slightest amount of throttle, and I'm at 50-60 KPA (or between 15 and 18 inches). I'm not talking about cruising, I'm talking about just enough throttle tip in to get the vehicle moving at a slow pace.

Should I be seeing this vac at such low speeds from BEHIND the solenoid? In front of the solenoid I get about 60-70 KPA. If not, where would you go with this problem? Bad solenoid... 5 days old, or ECM grounding for no reason, or other?`

 

Disconnect the electrical connector at the EGR solenoid. Test drive it again. If the problem persists, disconnect the vacuum source from the EGR solenoid and cap it. Test drive again. One of those should help isolate the problem.