Well I got the time to look at the wife's Blazer. I pulled the vent solenoid, passes air until energized then blocks air flow, de-energize and the flow is blocked until pressure is off, the it's pass through. Next I removed the canister for inspection. Looked OK, cap off ports and it held pressure. Next I pressurized the tube into the fuel tank, it held ppressure just fine..... Since the purge valve on the intake manifold and somewhat burried under heater hoses, and wiring harnesses, I opted to just ohm check it and then clip 12 volts to it like I did to the vent valve to see if I could hear it acuate. Sure enough it sounded like it was working just fine. I also removed and re-attached the cap on the test port next to the purge valve.... I fiured my only choice was to remove the valve from the manifold for inspection, or make an appointment at the GM dealer!! So, on with an oil and filter change. After the O & F change, I started it up and let it idle for a while (about 5 minutes) while I cleaned up, dumped the oil into my recycle holding tank etc. Came back to the truck and to my suprise (and delight) the SES light is out!!! Let me say that is real light gauge wire they are using for the solenoids even though they only pull 1/2 an amp!!!! So, what did I do to fix it??? Free up a stuck purge valve??? I don't think the cap was loose on the test port...
- posted
16 years ago