2001 Camry - EGR system issues

The mechanic who performed the work has an onus to fix the problem. Now in times past in such a situation as this, the shop involved would take the car back and fix it properly for free as they failed to do the job properly the first time. But in these times, they may just have another go and charge you for the extra work. I'd check your consumer laws for any information on this. If they want to have another go at your expense, I would go to another shop and put in a complaint to the industry regulator on the first place.

Jason

Not necessarily, Jason. If a guy goes to a shop asking to put a part in that he was unable to, the shop is hardly responsible for the original diagnosis.

Fair comment.

:-) Jason

Well, assuming the VSV you replaced is functioning properly and the EGR valve is installed, hooked up, and has a clean path into the intake manifold, the only other component left is the vacuum modulator. But it sounds like some diagnosis is in order before more parts are tossed at this thing. Here is one thing that you can do to verify if the lack of EGR flow is mechanically inhibited by a blockage of some sort or if it is a control issue (like the valve not being opened for some reason). On top of the valve there is a small vacuum port with a hose connected to it. This is the vacuum line that physically opens the valve and allows exhaust gasses to flow to the intake. Apply vacuum at this port while the car is idling. By opening the EGR valve at idle, the car should stumble and stall out. If this doesn't happen, then you know that the exhaust gas is not making it into the intake manifold. I the car DOES stall, then you know you have a control problem like a bad valve, dirty modulator, or mis-routed vacuum lines. Oh, and have you verified the MIL is indeed the same code as before? I've seen stranger things happen.

You have to go through the proper diagnostics procedure. The valve itself is usually very solid and does not go bad unless the silicone diaphragm deteriorates (not likely in a 2001). And with the valve and tube replaced the problem hasn't gone away then you know those were not the cause.

You still need to check the control circuitry (that operates the VSV), the EGR VSV valve behind the intake manifold, all EGR vacuum hoses, vacuum modulator (again, not likely in a 2001). The problem can simply be a plugged vacuum port in the throttle body that sends vacuum signals to the modulator.

Do a search on how to check Camry's EGR system.

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