Question about 1994 Chevrolet Caprice Classic

Open Question

1994 Chevy Caprice 4.3 V8 runs rough when accelerated shows code 32 I replaced EGR valve and EGR Solenoid no change.

Posted by George McCoy on


5 Related Answers


Travis Humphries

  • 1990 Answers

SOURCE: 1994 Chev Astro 4.3L AWD "W" OBD Code 43 168K Miles

I would replace the Fuel Filter and Run a Can of B12 Chemtool with a Full tank of Fuel before you start Draining the Fuel out of the Tank.

Posted on Jan 10, 2009



  • 73 Answers

SOURCE: my 94 s10 4.3 vortec was running very rough

I hope this helps, I have had this problem 1 other time.
The EGR valve you bought was a negative and it calls for a positive. Or visa/ verse. If that is the case, it will not start. There are 2 different EGR's for 1994, CFI & TBI, both are the type of injection and are not interchangable on the EGR valves.

Posted on Jan 14, 2009



  • 22 Answers

SOURCE: rough idle poor acceleration

The EGR Valve is right under the air intake hose, these have a habit of getting jammed by pieces of carbon. You can remove the valve by disconnecting the wiring connector and removing the two bolts holding it on (10mm head) You should see the piece of carbon holding it open.

Good carb and choke cleaner will clean it up, the get a screened gasket to fix this issue once and for all. I cleaned mine about ten times in four years till I got a screened gasket, then no more issues.

Posted on Apr 03, 2009


  • 108 Answers

SOURCE: My car hesitates on acceleration from a stop.

Sounds like a bad wire connection. Check the connectors for cleanliness and that they are tight and free of corrosion.

Posted on Apr 08, 2010

Testimonial: "Good idea. I intend to replace spark plugs, wires and distributor cap. Car just turned over 100,000 miles. Which wires should I check in addition?"


  • 12 Answers

SOURCE: Rough idle 1994 chevy pick up k1500 4x4

I had a 96 GMC 1500 with a 5.7 ltr. It would idle rough, especially on start up. After replacing everything under the sun, it turned out the ECM (computer) was shot. I found a used one and plugged it in and it ran fine. I think I paid 50 bucks or so for it. If you know someone with a truck like yours, plug theirs in and see if it fixes it.

Posted on Apr 19, 2010

Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

1993 chevy caprice with a 32 dtc code?

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.

Oct 24, 2012 | 1993 Chevrolet Caprice

1 Answer

Code 32 1994 dodge spirti 4 cylinder

code 32 may be EGR. check the vacumn line for holes or cracks also the EGR may get dirt around the rod that opens it & remained partially open , if it is running rough on a idle clean the EGR off at the car wash.

Feb 18, 2011 | 1994 Dodge Spirit

1 Answer

What are codes 32 and 45 for a 1994 Doge Ram 3500 Van?

32 - EGR Solenoid circuit. Short or open in the EGR solenoid circuit. Check for loose, broken, or shorted wire in the EGR valve wiring and connectors. Possible air fuel ratio imbalance not detected during diagnosis.

45 - Trans OD solenoid circuit. Transmission OD solenoid circuit failure. Open or short in the transmission overdrive solenoid circuit.

Jan 13, 2011 | 1994 Dodge Ram 3500

4 Answers

Have a 1995 ford contour and took it to pepboys and they got multiple codes. One of the codes came up twice code 332 says egr valve not opening could this cause all the other codes? My husband has checked...

DTC P0332 is for a knock sensor, not egr valve. That's not to say one of the multiple codes you've mentioned wasn't for the egr valve.

What are some of the characteristics the vehicle is showing. By the way, what is the vehicle? In one place it says 1995 contour, in another it says 1995 explorer.

Jan 03, 2011 | 1994 Ford Explorer Limited

1 Answer

Has low power, surges @ cruizing speed, rough idle (code 32)

You can remove the egr and see if it has been sealing,and if it still moves.

Jan 29, 2010 | 1993 GMC Sonoma Club

1 Answer


6ff5ad5.jpg About $140.00

The EGR valve is mounted on the intake manifold and has an opening into the exhaust manifold.

The digital EGR valve, used on all 1990 and later EGR-equipped engines (Except the 2.5L and 1994-96 3.8L engine) is designed to control the flow of EGR independent of intake manifold vacuum. The valve controls EGR flow through 3 solenoid-opened orifices, which increase in size, to produce 7 possible combinations. When a solenoid is energized, the armature with attached shaft and swivel pintle, is lifted, opening the orifice.
The digital EGR valve is opened by the ECM, grounding each solenoid circuit individually. The flow of EGR is regulated by the ECM which uses information from the Coolant Temperature Sensor (CTS), Throttle Position Sensor (TPS) and Manifold Absolute Pressure (MAP) sensor to determine the appropriate rate of flow for a particular engine operating condition.

Digital EGR Valve Testing:

This system must be checked using a Tech 1®or equivalent scan tool. Steps 4, 5 and 6 must be done very quickly, as the ECM will adjust the idle air control valve to compensate for idle speed.
  1. Using a Tech 1®or equivalent scan tool, check for any diagnostic trouble codes and solve those problems first. Refer to the Diagnostic Trouble Code (DTC) lists later in this section.
  2. Select "EGR CONTROL'' on the scan tool.
  3. Start and run the engine, until it reaches normal operating temperature, then allow the engine to idle for 2 minutes.
  4. Energize EGR SOL #1; engine rpm should drop slightly.
  5. Energize EGR SOL #2; the engine should have a rough idle.
  6. Energize EGR SOL #3; the engine should idle rough or stall.
  7. If all tests were as specified, the system is functioning properly.
  8. If not, check the EGR valve, pipe, adaptor, gaskets, fittings, and all passages for damage, leakage or plugging. If all is OK, replace the EGR valve assembly.
Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

Sep 02, 2009 | 1990 Oldsmobile Cutlass Supreme Conv

1 Answer


Try cleaning the EGR valve first

electronic Tempture Control
ECT sensor
Potential Symptoms

Symptoms of a P0118 could include:

* Very poor fuel economy
* A no start condition
* Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
* Illumination of MIL
EGR valve

Usually a fault in the control circuit, will leave no noticeable symptoms other than the Malfunction Indicator Lamp (MIL) illumination. However, if the EGR control solenoid
is stuck open due to debris, etc. the code may be accompanied by misfire under acceleration, rough idle, or engine dying altogether.

Dec 22, 2008 | Dodge Neon Cars & Trucks

1 Answer

Hard Start with trouble code 32

You should have your battery checked, it may be getting old and doesn;t have as much cold cranking power, I don;t think code 32 has anything to do with the slow cranking when cold.

Trouble Code 32 indicates that the Exhaust Gas Recirculation (EGR) valve diaphragm is not where the ECM expects it to be. The ECM controls the diaphragm with a Pulse-Width Modulated (PWM) waveform. The EGR has a vacuum bleed solenoid that adjusts the vacuum applied to the EGR valve based on this pulse width. If there is sufficient vacuum at the EGR valve, a switch closes to send a signal back to the ECM. The absence of this signal is the bases for code 32.
The conditions for setting this code are:
  • no vacuum to EGR (switch open), and
  • Code 33 or 34 (MAF error) is not present, and
  • engine running and LV8 is less than 100, and
  • coolant temperature is > 118 deg F (48 deg C), and
  • the EGR solenoid duty cycle is < 65%, and
  • the above conditions are met for more than 25 seconds

Typical causes for this code include:
1) Faulty EGR valve-to-ECM connection
2) Plugged EGR passages and/or sticking EGR valve
3) Defective EGR valve
4) Defective ECM

May 25, 2008 | 1994 Chevrolet G20

Not finding what you are looking for?
1994 Chevrolet Caprice Classic Logo

Related Topics:

264 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8984 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides