How can you tell the GM EGR valve apart?
How can you tell the GM EGR valve apart?
General Motors has used different types of electronic EGR valves and this article focuses on the Linear EGR valve from the mid 90’s to the early 2000’s. How can you tell them apart? By looking at the base of the EGR valve. To illustrate this, look at photo 3 of 4 and photo 4 of 4 in the image viewer above.
How to test the GM EGR valve-Buick, Olds, Olds?
By looking at the base of the EGR valve. To illustrate this, look at photo 3 of 4 and photo 4 of 4 in the image viewer above. The EGR valve in photo 3 of 4 (with the red X) is not covered by this article and is tested differently. The EGR valve in photo 4 of 4 (with the GREEN check mark) is the one covered by this article.
What kind of power source does the EGR valve use?
5 Volt Reference (provided by the PCM). 12 Volt Power Source. The color of the wires is not important as long as you identify the wire (circuit) by its letter designation. Also, the EGR valve on your vehicle might have its connector connecting to it at a 90 degree angle or connecting straight down onto the EGR valve.
General Motors has used different types of electronic EGR valves and this article focuses on the Linear EGR valve from the mid 90’s to the early 2000’s. How can you tell them apart? By looking at the base of the EGR valve. To illustrate this, look at photo 3 of 4 and photo 4 of 4 in the image viewer above.
Where can I buy a Delco EGR valve?
Won’t pass the state mandated emission test. You can find the EGR valve in any auto parts store. If you’re wanting the buy the original AC Delco (Delphi) EGR valve, you can buy it online for a whole lot cheaper than somewhere local. The following links will help you comparison shop for the AC Delco and after market EGR valves:
Where is the vent port on an EGR?
In case you’re wondering, the letter J is embossed above the vacuum port on the throttle body. The other side of the EGR vacuum solenoid has 2 ports. One is a vent port (that vents vacuum to the atmosphere) when the engine is idling.
What is the other side of the EGR vacuum solenoid?
The other side of the EGR vacuum solenoid has 2 ports. One is a vent port (that vents vacuum to the atmosphere) when the engine is idling. The other port connects to the EGR valve and should only have vacuum when the PCM commands the solenoid to activate.
Where is the EGR valve on a Chevy Silverado?
Silverado EGR valve location and bolt location (circled in red). Figure 2. Remove two 10mm bolts. Figure 3. Lift out the EGR valve. Figure 4. Un-clip the connector. Correctly position the new gasket onto the EGR mounting surface, followed by the new EGR valve. Hand-tighten the 10mm bolts.
What happens when the EGR valve gets stuck on a GM 4.3L?
This tutorial addresses a very common problem I’ve seen on the 1987-1995 GM 4.3L, 5.0L, and 5.7L engines with throttle body fuel injection system: a stuck open EGR valve. And when the EGR valve gets stuck open, it’ll cause a rough idle condition that may hard to diagnose.
Where can I find the EGR valve test?
To make sure this tutorial applies to your specific vehicle, check this section out first: Identifying The EGR Valve. You can find this tutorial in Spanish here: Cómo Probar La Válvula EGR Electrónica (3.1L, 3.4L GM) (at: autotecnico-online.com ).
Won’t pass the state mandated emission test. You can find the EGR valve in any auto parts store. If you’re wanting the buy the original AC Delco (Delphi) EGR valve, you can buy it online for a whole lot cheaper than somewhere local. The following links will help you comparison shop for the AC Delco and after market EGR valves:
