Re: 1993 Camry 2.2l auto
Here's yet another post about rough idle and stall issues once the engine warms up. My problem has been the car stalls or nearly does, particularly when stopping on an incline and/or when abruptly stopping.
I've narrowed in on the EGR valve (after doing the proper IAC cleaning shown here
). I disconnected the air hose to the EGR valve and plugged it (as discussed here
). The problem was gone when I took it for a test drive -- and sure enough the problem resurfaced on that same drive once I re-connected it.
A few questions:
1. Can I drive indefinitely with the EGR valve hose plugged like this, or would that cause harm?
2. Is it possible to clean rather than replace the EGR valve? It looks like a new EGR would be somewhere around $300. The car's only worth about $1k. I'm most interested in not having to put car on jack stands (i.e., leaving the pipe alone).
3. The CEL did not come on when I disconnected the EGR valve hose, nor when I disconnected the ECT engine coolant temperature sensor. Does that indicate a problem with the ECM? FWIW, before I did either disconnection, I used a paperclip and got no codes at all, just the flashing "all clear" sign).
4. I have an exhaust leak at the rear flange. Could this be contributing to the stall/idle issues? I read a reference somewhere to insufficient back pressure...
Thanks in advance for any and all responses.