code # 32 = EGR. Can egr valve be tested?
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From: the corner of walk and dont walk
code # 32 = EGR. Can egr valve be tested?
Is it possible to test egr valve to see if it is working or bad? I do not have to pass emissions, can I remove or unhook egr valve without causing problems?
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From: SE NY
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Re: code # 32 = EGR. Can egr valve be tested? (sinistervette)
You can test the EGR function either by directly hooking vacuum to the EGR Valve or activating the EGR Solenoid at idle.
Then monitor the EGR Temp Sw on top of the EGR tube.
This sw should be open (+5 Vdc) when the EGR Valve is closed and shortly after the valve goes open the sw should close (0 Vdc).
You may have to raise the idle to get enough exhaust gas through the EGR tube to heat the EGR Temp Sw.
If all vacuum lines involved with the EGR function are in tact the problem is most likely with a heavily carboned up EGR Valve.
Some guys have blocked off the EGR with no problems. But, in theory, the ECM looks at the EGR Temp Sw shortly after it commands the EGR Valve to open; if the EGR Temp Sw is not sensed closed the ECM should throw the EGR trouble code. When this happed to me, the engine lost power until after I restarted it.
Changine the EGR Valve is kind of tedious but not realy a hard job.
Then monitor the EGR Temp Sw on top of the EGR tube.
This sw should be open (+5 Vdc) when the EGR Valve is closed and shortly after the valve goes open the sw should close (0 Vdc).
You may have to raise the idle to get enough exhaust gas through the EGR tube to heat the EGR Temp Sw.
If all vacuum lines involved with the EGR function are in tact the problem is most likely with a heavily carboned up EGR Valve.
Some guys have blocked off the EGR with no problems. But, in theory, the ECM looks at the EGR Temp Sw shortly after it commands the EGR Valve to open; if the EGR Temp Sw is not sensed closed the ECM should throw the EGR trouble code. When this happed to me, the engine lost power until after I restarted it.
Changine the EGR Valve is kind of tedious but not realy a hard job.
