Question about 1993 Chevrolet Caprice

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1993 chevy caprice with a 32 dtc code?

Idles rough

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  • Chevrolet Master
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Code 32 is the egr system, if you are getting a rough idle then this may be your problem, check the EGR valve, this system has a few parts the valve and the vacuum control solenoid , the valve may be bad or have carbon stuck in pintle or solenoid is bad and allows vacuum to open it at idle when it is not suppose to. try to remove vacuum line and see if idle smooths out if not remove the valve and see if it is open, if it is something you can clean then do so otherwisr replace it and also the solenoid.


when you remove the valve start the engine it will rev high but thats okay, with engine running you will see two ports, one should have vacuum and the other exhaust, make sure they are not plugged, if so unplug them. start with this.

Posted on Oct 24, 2012

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Posted on Jan 02, 2017

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SOURCE: location frame ground wire on chevy caprice 1993 will not keep ru

Check all car's sensors... the air-conditioning sensor has something to do with this

Posted on May 11, 2009

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SOURCE: having DTC 0300 intermittant error code with rough

iwould say try some octane booster sounds like poor quality fuel p0300 is a multiple misfire so start with that and i believe vettes are supposed to run 89 or better octane

Posted on Aug 05, 2009

  • 79 Answers

SOURCE: rough idle

Barring any mechanical issues you most likely have a failed injector.

Posted on Aug 14, 2009

  • 3640 Answers

SOURCE: dtc code p0121 and p2135 2007 chevy malibu

both codes refer to the throttle position sensor, the sensor is at the throttle plate, on the side of the throttle body. to test remove the connector to sensor, use a ohms meter to test. put 1 lead to top connection and the other to the bottom one. move throttle and the needles on the ohms meter should move very even, move throttle slow to get a good reading, needle should move without no hesitation, if the test is bad replace tps sensor. if the sensor gets to bad, it can have an effect on transmission shifting. after fixing sensor have the light turned of with an obd2 scanner.

Posted on Feb 20, 2010

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this is related to the egr system and makes sense when you describe a rough idle. the egr is probably stck open slightly. remove and attempt to clean with carburretor cleaner. it also helps to have a vacuum pump so you can work the diaphragm up and down. happy holidays

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