diagnostic codes 327,328,332
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New User
Joined: Apr 2002
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diagnostic codes 327,328,332
The truck is a 93 F250 4x4 with the 351 engine. I'm getting codes 327,328,332. It has high idle, poor performance and poor gas mileage. Anybody know what these are and where I should look?
Thanks in advance for all the help.
Sam
Thanks in advance for all the help.
Sam
Senior User
Joined: Aug 2001
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From: New England
diagnostic codes 327,328,332
327 is EGR Valve Position (EVP) sensor circuit below minimum voltage.
328 is exhaust gas recirculation valve position sensor closed voltage lower than expected.
332 is insuffient flow to EGR valve. Check to see if you have vacuum to the EGR valve at increased RPMs.
328 is exhaust gas recirculation valve position sensor closed voltage lower than expected.
332 is insuffient flow to EGR valve. Check to see if you have vacuum to the EGR valve at increased RPMs.
Tuned
Joined: Jan 2002
Posts: 253
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From: BC Canada
diagnostic codes 327,328,332
>327 is EGR Valve Position (EVP) sensor circuit below minimum
>voltage.
>
>328 is exhaust gas recirculation valve position sensor
>closed voltage lower than expected.
>
>332 is insuffient flow to EGR valve. Check to see if you
>have vacuum to the EGR valve at increased RPMs.
hey Swirk! maybe you can answer this question -maybe you have already. My truck is getting code 31 (like the 327 code) and i have no vacuum at the EGR at idle nor do i have vacuum (that i can feel with my finger) when i rev up the motor while sitting in park. my question in another post was: should there be vacumm to the EGR at a high rev? (no responses yet). Because i do not have any vacuum at high revs i am assuming that the EVR (EGR regulator) is fried. what do you think? I replaced the green hard plastic hose from the EVR to the EGR already so that vacuum line is good now. CHUCK ENGINE light on constantly. any tips?
thanks,
Rusty.
>voltage.
>
>328 is exhaust gas recirculation valve position sensor
>closed voltage lower than expected.
>
>332 is insuffient flow to EGR valve. Check to see if you
>have vacuum to the EGR valve at increased RPMs.
hey Swirk! maybe you can answer this question -maybe you have already. My truck is getting code 31 (like the 327 code) and i have no vacuum at the EGR at idle nor do i have vacuum (that i can feel with my finger) when i rev up the motor while sitting in park. my question in another post was: should there be vacumm to the EGR at a high rev? (no responses yet). Because i do not have any vacuum at high revs i am assuming that the EVR (EGR regulator) is fried. what do you think? I replaced the green hard plastic hose from the EVR to the EGR already so that vacuum line is good now. CHUCK ENGINE light on constantly. any tips?
thanks,
Rusty.
Senior User
Joined: Aug 2001
Posts: 407
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From: New England
diagnostic codes 327,328,332
rusty,
I had no vacuum at idle or revved up at my EGR. I had a 332 code on constantly. I fixed that. I now have about 5-6" of vacuum at 2500-3000 rpms. I would suggest tracing your vacuum lines. There should be three red lines off of the intake manifold. I traced those three lines first. One went to the fuel pressure regulator, another went to a T fitting and the third someone had plugged into the "coffee can", which had a black line coming out of it. What I ended up doing is connecting the third red line and the black line together (with a small piece of hose and a couple of hose clamps), this made the vacuum start working at my EGR valve.
My suggestion would be to trace your vacuum hose routing, by using the sticker under the hood. It is color coded and is very helpful. If you unplug the big black line that goes from the MAP sensor to the manifold, the truck will stall.
I had no vacuum at idle or revved up at my EGR. I had a 332 code on constantly. I fixed that. I now have about 5-6" of vacuum at 2500-3000 rpms. I would suggest tracing your vacuum lines. There should be three red lines off of the intake manifold. I traced those three lines first. One went to the fuel pressure regulator, another went to a T fitting and the third someone had plugged into the "coffee can", which had a black line coming out of it. What I ended up doing is connecting the third red line and the black line together (with a small piece of hose and a couple of hose clamps), this made the vacuum start working at my EGR valve.
My suggestion would be to trace your vacuum hose routing, by using the sticker under the hood. It is color coded and is very helpful. If you unplug the big black line that goes from the MAP sensor to the manifold, the truck will stall.
Senior User
Joined: Aug 2001
Posts: 407
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From: New England
diagnostic codes 327,328,332
rusty, if you don't have the vacuum routing diagram, there is a post on the 1987-1996 trucks and vans forum with a picture of a vacuum diagram for a 4.9L. Should be similar routing. Just an idea.
