code 332 egr opening not detected
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Junior User
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From: Ga
code 332 egr opening not detected
94 f150 4.9 - just put a new EGR Vac. Solenoid on to elimimate Code 558. Runs much better, but Check engine Lt On an new code 332 is set. Egr valve passed the mechanical test and nearly kills the idle when vac.,is applied. What shoukd I look at next?
Thanks
Thanks
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Check all the vacuum hoses around there. On mine when i got it and i touched them they fell apart or broke. Went to autozone grabbed me some of the hose and replaced EVERY factory colored hose on my motor. All my error codes went away and have not had a problem since!
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
If all the vacuum hoses are OK then take a look at the EVR solenoid that controls the EGR valve. If it is not sending vacuum to the EGR valve it will not open.
For more information go to this link:
http://fordfuelinjection.com/index.php?p=43
/
For more information go to this link:
http://fordfuelinjection.com/index.php?p=43
/
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Junior User
Joined: Oct 2006
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From: Ga
New Evr and Egr position sensor. Code 558,...Evr circuit failure up again. I will check vac. an hoses. Thx
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Junior User
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From: Ga
Easy Fix
You were right! New Vac. hoses and problem gone. Strangely enough, I did not see any crack or break, but apparently it was suckin somewhere.
Thanks
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Junior User
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From: Ga
EGR WOES! AH XXXX! WELL THOUGHT I HAD IT! 332 CODE CAME BACK!!!!!!!!!
Ok all new hoses, new Egr position sensor, and the 3rd Egr Vac. solenoid installed. The Egr will open when source Vac. is applied from the bottom hose going to the solenoid. I have 12VDC on the right side connector pin on the Ev. sol., and can ground out the other pin, but this 3rd switch will not supply enough Vac. to open the Egr. I know they do vent internally, and I am begining to become suspect of these cheap aftermarket parts. Could it be, I just need a Motorcraft replacement part???? 
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Junior User
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From: Ga
4.9L EGR Vac. Solenoid
I will check the vac., however, if I bypass the switch altogether and put the source vac. directly to the EGR, it will definately open. These cheap solenoids, once energized, I don't believe allow all the vac. to pass through...or should I say, the solenoid becomes a vacuum leak at the internal vent once energized. The vent should seal when energized, but open to allow the EGR to retract or close once de-energized.
The one I have been getting is from the Zone is Duralast, and after trying 3 different ones, I am almost convinced, their manufacturer could be making a bad part?!
There could be a pin hole in the EGR diaphram also thats rendering it barely useable also, and it needs all the vac. it can get!?!
Who's idea was an EGR anyway?
The one I have been getting is from the Zone is Duralast, and after trying 3 different ones, I am almost convinced, their manufacturer could be making a bad part?!
There could be a pin hole in the EGR diaphram also thats rendering it barely useable also, and it needs all the vac. it can get!?!
Who's idea was an EGR anyway?
Fleet Owner
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From: Easton,Ks
The bottom hose on the the solenoid goes to the vacuum tree. The EGR valve hose goes to the top hose.
Did you go to the link I posted in post #5 above?
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Junior User
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From: Ga
Vacuum/Egr problems...4.9L
I need to put a guage on it. the engine is in good shape...only 110k, and well kept. Timing, tune all within spec. And I did check out FFI site-thanks SUB.,,,,funny thing is, I know there is plenty of Vac. if I can branch around the switch and the EGR opens no problem!?
Fleet Owner
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From: Easton,Ks
Key off.
Disconnect vacuum hose at EGR valve and connect hose to vacuum gauge.
Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed
out pins, corrosion, loose wires, etc. Service as necessary.
Connect Powertrain Control Module (PCM).
Start engine and run at idle.
Ground EVR signal at EVR solenoid.
While reading the vacuum gauge, tap the EVR solenoid and wiggle the EVR connector and harness.
Does the vacuum gauge indicate a sudden drop in vacuum when the EVR solenoid is tapped or when the connector or harness is wiggled?
NOTE:
EVR leakage below 1.0 in-Hg (3.4 kPa) is normal.
Disconnect vacuum hose at EGR valve and connect hose to vacuum gauge.
Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed
out pins, corrosion, loose wires, etc. Service as necessary.
Connect Powertrain Control Module (PCM).
Start engine and run at idle.
Ground EVR signal at EVR solenoid.
While reading the vacuum gauge, tap the EVR solenoid and wiggle the EVR connector and harness.
Does the vacuum gauge indicate a sudden drop in vacuum when the EVR solenoid is tapped or when the connector or harness is wiggled?
NOTE:
EVR leakage below 1.0 in-Hg (3.4 kPa) is normal.