Spiers

iTrader: (7)

My SES is on so I took it to AutoZone for a scan. Its showing P0400, EGR Flow malfunction. So I took off the EGR valve and used carb cleaner, cleaned it. It was not really dirty at all anyway. I then let the car idle after I put it back on, and pushed in the diaphram and the car almost died...So that means the EGR valve is working fine correct?

I reset the computer and the code still comes back, so what else should I do? Or could the EGR valve still be bad? Solenoid or what?

Thanks
Matt

slowpoke96z28

iTrader: (2)

look at MAF sensor reading. your MAF sensor may be going bad.

Spiers

iTrader: (7)

I am sorry but how do I check the MAF?

slowpoke96z28

iTrader: (2)

scan tool or by tapping it with a screwdriver or something. find somebody with autotap, a scanner, or a diablo or other programmer that can read codes and class II data streams.

Spiers

iTrader: (7)

Havent got around to checking the MAF yet, but I will asap. The car sounds like it is misfiring at idle, but its only throwing the EGR code. I just fixed a misfire from a bad plug.

mikenews

iTrader: (9)

P400 is "EGR flow" Sounds like the EGR has sh*t the bed. Swap it out with a buddies and try.

Spiers

iTrader: (7)

I don't have any friends. But I bought a new EGR, Ill put it on this weekend and see how that does. That's probably it.

JScamaro

iTrader: (6)

Rip your egr out and get the codes tuned out. That will fix it for good.

slowpoke96z28

iTrader: (2)

if you dont have any friends, you got bigger problems than just car problems that need taken care of, lol.

Spiers

iTrader: (7)

LOL, well I replaced the EGR valve along with the solenoid, and that fixed the problem. I guess there was some recall on the EGR's for 96-97? Anyway just thought I would reply for if someone searches for this in the future, there are many threads that came up in a search on the camaro forums, but almost nothing here.

mikenews

iTrader: (9)

Good 2 hear! Spend alittle get alot!

slowpoke96z28

iTrader: (2)

glad to hear that fixed it. in the future, you can also check that style egr valve with a vacuum pump. if you aplly vacuum to the fitting on the valve, it should open and the car wll idle rougher as you open the valve more.