Can someone tell me if you can easily access the pcv valve on a 92 Olds
Cutlass Supreme 3.1 engine? It is my understanding that the pcv valve is
located on the valve cover for the rear side of the engine. Do I need to
rotate the engine forward to get at it? Do I need to remove the intake
plenum? If yes on the latter question, will I need to replace a gasket for
Why did gm put parts needing regular maintenance on the back side of the
engine, like the oxygen sensor.
Thanks in advance.
Yes you can get to the PCV valve. It's a bit of a bugger but it can be
done and you won't have to remove any engine parts.
Basically put your hand behind the fuel injector plenum and feel around
for the PCV valve hose. Give it a gentle pull to get the hose off of
the PCV valve, and then grab the top of the PCV valve and pull it out.
Use a mirror if you need to.
I used to do it that way with an 89 Cavalier I had (2.8L V6). I would
assume that the Cutlass has a bit more room between the engine and the
Arrrgggg. I split the hose. I worked for about 45 minutes to get the pcv
valve out of one end or the other. Came out of the manifold first. Have
not been able to get it off the hose. Now the hose split. Thought at first
"big problem, how am I going to get up under the plenum to connect a new
hose?" Then I got to thinking and I'm going to see if I can find a
connector and splice a new piece of hose onto the old.
I've been having a lot of problems with the car remaining at a high rpm when
I remove my foot from the gas and then trying to flood down when I come to a
complete stop. It runs really rough and has stalled a lot, but I've never
got a code off of it until yesterday. It had 4 codes, two of which lead me
to believe that it is the pcv valve.
22 - Throttle Position Sensor - voltage low
33 - MAP Sensor - high voltage, low vacuum indicated
35 - IDLE Speed Control Circuit (no idea what this is)
44 - O2 sensor - lean exhaust indicated
Then I got to thinking that when all of this started I opened my hood and a
friend noticed that the dipstick was pushed out of its tube a bit. I am
wondering if the pcv valve went bad throwing all these other sensors into
chaos. I've changed the tps, iac, and the ecm. If I can get the hose and
connector, I'll change the pcv today.
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