[MazdaMan069]

i have a cel coming on...its the egr valve position sensor. I tested the valve, it seemed to work properly. Im going to clean it in a bit. But, the other thing is....while testing the egr (sucking through the vacuum hose) the idle will drop....good. Now, after the idle drops...it will come back up to normal and stay.....then, if i rev the motor....the idle will stick at 1k. Does anyone know what could cause this? vac leak somewhere? Or, is it the EGR itself?

*EDIT* When im on the throttle, driving down the road...the cel will go out. When i let up and the car bogs down...the light comes on.

 

[MazdaMan069]

anyone?

 

[SleepCounter]

its the egr valve position sensor.

Call me old-fashioned, but I'd be tempted to replace the egr valve position sensor before I tried diagnosing any additional or related problems.

 

[MazdaMan069]

yeah, i know, but.....from what i can tell...its working fine. I dont believe there is any vac goin to the egr. ill just have to jack the car up and look i guess.

 

[johniebgoode]

EGR

Trace the vacuum lines back to the solenoid located near the top center of the firewall. Sometimes these can cause problems along with the v-lines. Chances are once you get the valve working freely, you'll be ok !

 

[MazdaMan069]

update

the valve works definitly. The valve moves when i increase idle speed. It was fine before the mtx conversion. Any ideas at all?

 

[MazdaMan069]

there arent any vac hoses off.....the egr valve is working.....what else could it be?? someone please help me out here. The book really sux. Unfortunatly, i dont have the factory workshop manual. What is that called that the vac lines off the egr run into? Could that be my problem? The EGR is getting vac though....maybe not enough? I want to get this fixed.

 

[MazdaMan069]

eh, **** it....ima just get a different sensor. That should work.