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Old 04-02-2011, 05:43 PM
asnider asnider is offline
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Default Odd EGR valve problem

Hi all. I'm new to this, so please bear with me. Just bought a '94 Ranger, 2.3L 4 cyl, 2wd, ext cab, XLT. Keep getting check engine light. Thanks to the great info here, pulled the codes, got 332 and 172. The downstream O2 sensor is MIA, so I'm focusing on the EGR valve code. Checked all vacuum lines. All looked good. Removed valve and cleaned it. Valve works when vacuum applied (sucked on it while looking in mirror and could see valve lift with little suction). Reattached and tightened connecting pipe to exhaust (which was so loose it rattled). Disconnected battery to reset codes. Drove. Still getting 332 code. When I pull the vacuum line off when the engine is hot and running, suction is very weak. Strong going into solenoid (enough to stick to my finger) but very weak coming out. Not getting solenoid code. Could this be the problem anyway? Could the missing O2 sensor be causing the solenoid to misbehave? Can a solenoid be fixed? Thanks for any insight you can offer.
1994 Ranger Ext. Cab
5 spd
4 cylinder
history a mystery
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Old 04-03-2011, 02:41 AM
S13minus1 S13minus1 is offline
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Join Date: Jun 2010
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Default Re: Odd EGR valve problem

at idle you will not get any vacuum to the egr. egr should only open at cruising rpm. if your solenoid is good, and your egr is good and can flow (aka no carbon in the passage) i'd check the vacuum line from solenoid to egr. i'm not 100% sure on the '94's, but i hope this can get you in the right direction.
'10 Ranger XL 2.3L Manual
Mods: Stereo, Tint, Weatherguard rain shields, Intake silencer removal, LED brake, turn signal, reverse, license plate, and dome lights, DDM HID's (currently removed), lowered, 17" wheels with spacers, Explorer autodim mirror with Autolamps, Magnaflow exhaust, Buggman LED 3rd Brake Light...
Originally Posted by ColinS View Post
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