Canister Purge ON (all the time!) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-08-2008, 09:23 PM   #1
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Default Canister Purge ON (all the time!)

I bought the EFI Live V4 scan tool and am having a great time with it, looking at all the data flow from the sensors.... It helped figure out the P1361 error and clears codes easily. Then when another code popped up I was concerned until I saw it was just the PRNDL switch code (I have the console kinda out since I'm working on carpet pads and carpet). I love scan tools! Anyway, one thing bothers me: it shows "canister purge" as being ON all the time when the car is running. Is this normal ?
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Old 04-08-2008, 10:30 PM   #2
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Did you get cables for laptop from them too or you bought it separatelly ?

I downloaded their evaluation version but I don't have cables from my OBD to PC serial connector.
Actron'* cables don't fit.
I saw one site,but they want $80. Just plain rip-off.

There was one person here on BC who was making these cables,but I didn't get answer on my PM to him.

Regarding your canister purge I don't remember for sure ,but I think when I scanned my car purge was on too when car was running.

Thanks in advance for info.

EDIT: This is from FSM:

The PCM pulses "ON " the solenoid to allow purge when :

1. The engine is fully warm.
2. The engine has been running a specified amount of time.
3. The IAT reading is above 50 degree F.
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Old 04-20-2008, 05:14 PM   #3
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I bought the cable from OBD Diagnostics. I think it was $65--very expensive for two wires, a USB end and an ALDL end! I don't know what'* under the shrink-wrap on the USB end though.
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