EGR on 4th Gen.... - Honda Prelude Forum

ancient · 04-12-2004, 08:52 PM

I've done searches, and everything but still not sure whats wrong.

I did the egr blockoff plate, all good ther, but I still seem to get CEL for EGR, at middle throttle. Almost always when im driving.... Sensor is plugged in. I also cleaned the EGR before I put it back on.

Why am I still tripping a code? Thanks

ds2000 · 04-13-2004, 03:52 AM

When I had this it was due to a vacuum hose being connected to the wrong pipe after my engine swap. Check all the numbers (on the pipes) and make sure they correspond

Sorry if this doesn't help much

ludevtec · 04-13-2004, 07:54 AM

I blocked off my egr dissconected the plug and blocked off the vaccum lines and I have no check engine lights!!!

ds2000 · 04-13-2004, 08:36 AM

Hows your idle though?

ludevtec · 04-14-2004, 07:50 AM

Fine...nice steady 700rps and it will be better when I get the hondata in there and tune it

ludevtec · 04-14-2004, 07:51 AM

by the way how could that posibly affect the idle?????

ancient · 04-14-2004, 09:07 AM

My idle, seems to dip sometimes, when I come up to a light and stick it in neutral, it hits 600 then goes to about 200, then back up to 600. Other then that its fine.

ludevtec · 04-14-2004, 10:19 AM

so do you have the vaccum line hooked up? You shouldnt have any problems at all if you do

ancient · 04-14-2004, 05:15 PM

It just snowed here, so im waiting till it gets warm in a couple days. I dislike working on engines bare handed in cold weather

and barried in snow

ancient · 04-20-2004, 11:39 AM

Snow melted, I checked the tubes and they are all good.... Any idea?

G_Loc · 04-20-2004, 02:44 PM

OBD1 only checks for EGR valve lift, not flow, so its possible that the EGR on your car is faulty... Have you tried testing it out of the car with a vacuum pump?

ancient · 04-20-2004, 04:19 PM

Nope, ill do that tomorrow

slp mode · 04-20-2004, 10:21 PM

ha ha I have the same exact problem, anytime I drop in the 2000 rpm range, I get the code, so I just bought a new one, and I still get the code. very frustrating.

ancient · 04-21-2004, 11:32 AM

Realy? hmm

ancient · 06-14-2004, 10:48 AM

Reviving this thread as I still have not fixed the problem, I have done some reading, and it may be the egr control solenoid, which is located on the drivers side, right near the fender.

Phamine · 06-25-2004, 05:22 PM

Yep, that's what caused my code 12. I changed the valve and that didn't work. So I bought the whole EGR control module. It's located about the power steering resevior and cruise control. I haven't had an engine code trip since.

ancient · 06-25-2004, 11:18 PM

Hmm, k