I have a 95 Grand Prix with 3.1 engine with the digital EGR. I keep getting
the service engine soon warning. It's the EGR. All three of them.
So I checked. Power was good. And poking into the wire with a ground pin
made 2 of them 'click' but not the third. Turned out the 'set screw' on the
solenoid was in all the way. All three now work, but none of them affected
So, I tool the assembly off. Cleaned up everything. I started the engine.
get exhaust gas up TO the assembly base, but there is no intake vacuum draw.
I can only assume the intake is clogged.
I haven't even checked the books yet, but was wondering, how tough a job
is it to clear that out? Major disassembly? Or can I get it with a squirt