Posted by Dave'02LT on May 18, 04 at 19:54:03:
In Reply to: Code 32, this may be long.... posted by Okie3773 on May 18, 04 at 18:38:02:
Code 32 refers to the EGR. For some reason it is not flowing when the computer runs it's circuit check. It could be the vacuum line is not hooked up to the egr solenoid, the solenoid is not getting the command from the computer, the solenoid is not responding to the command, the egr valve is getting vacuum from the solenoid on command but it's diaphram is blown, or the egr valve passages are clogged up in the intake manifold. So, even if the valve opens like it should, there is no flow.
The last two are the most likely. Engine running, reach under egr valve and lift up on the diaphram. Engine should try to stall. If it doesn't, intake egr passages are clogged. Remove intake manifold and clean passages.
Engine running, lift up on valve, engine tries to stall like it's supposed to means passages good, valve suspect. Is valve getting vacuum at part throttle in drive? If so, valve likely bad.
EGR valve not getting vacuum at part throttle in drive? Solenoid suspect assuming vacuum supply from throttle body is good and computer is commanding actuation.
Beyond that, computer or the wiring leading to the egr solenoid causing the problem, is rare. Most likely egr diaphram blown or intake passages stopped up.
Using oil: Chevy motors tend to leak oil past the valves, like you suspect, but it's usually worn valve guides in the heads instead of valve seals. '93 is right there in a between years when Chevy started using better valve seals. If it's the newer design then you may be able to get by with new seals.
If it's the older design you will need to remove the heads and have the valve guides replaced by a very competent machine shop.