95 Accord EGR problem. HELP!!!

[mpumas]

It could be either the solenoid valve, hose or the EGR valve, position sensor. But then you purchased an EGR valve, so thats probably not it. I would not buy parts until you do some testing. You will need a vacuum gage and maybe a T- connection to hook into the vaccum line going to the EGR. The EGR is supposed to open between 1800-2500 RPM with a hot engine and the wheels turning. First I would check the EGR valve to ensure it holds vacuum. Disconnect the hose to the valve and pull 8" of vacuum on the valve. It should open and the vacuum should not bleed off. With the engine running, it should stall. Now connect the T in line with the vacuum hose going to the valve and put the gage in the vacuum circuit. If you have enough tubing you can put the gage into the passenger compartment. Get the car hot and drive it around at about 1800-2500 RPM. You should see the vacuum indicate on the gage. If it does, the EGR solenoid is opening. The only thing left is the position sensor on top of the EGR valve which is not indicating the EGR valve is opening or the wiring going from the EGR valve to the ECU. I gather you have reset the ECU, right?

[Catterman]

I will try the vacuum test thing.
I haven't reset the ECU since I cleaned the ports, but don't think it needs to be done because my check engine light didn't come on right away after I did the procedure. It took a few miles before it came back on. Right????

[Catterman]

Alright, I got some pictures I want to put up that may help others doing this, how do I put up pictures?

[Catterman]

Got the problem fixed, it was the EGR vacuum solinode. $20 at the junk yard.

[Smoghog]

Originally Posted by Catterman

Thanks, do I just go to AutoZone and get a device to measure the vacuum? I did find a used vacuum control solenoid for $50, they had a EGR position sensor too if that could also be the problem.

I believe you should have 7 in. hg. after the solenoid. When you get a code say" EGR " it is the whole system including the circuts. You can check the position sensor with a dvom and a vacuum pump. as for the solenoid you need a vac gauge tee'ed into the vac line in between the EGR valve and the solenoid. then run the car up to 2500 RPM and see if you get that 7 in. hg.