I got a code 26 popping up on datanaster I recently heatshrunk the wires think I broke the solenoid just wanna see what everyone here thinks. I checked the harness and it seems to be functioning goes down to 0 volts and then up to 11.xx and so forth. So its the sensor then or is there something else I should be looking for. I only ask because moneys tight (other projects wants) and I wanna make sure. Thanks in advance everyone.

 

I don't know what the resistance should be looking into the EVAP solenoid, but have you taken a reading?

 

ahh didn't even think about doing that one, thanks man. Ima check my book as well see if it'll give me a spec on what it should measure out too.

 

There is no "sensor" involved with the EVAP solenoid code. It's either an unhooked connector, a faulty wire or a defective solenoid.

When does the voltage on the harness go "down to 0 volts and then up to 11.xx and so forth"? The EVAP purge is activated by the PCM supplying a ground to open the solenoid. With the key on and harness connector off, there should be 12V on the brown wire, when measured to a chassis ground. There will be nothing on the dk green/white wire, unless the PCM is trying to activate the EVAP system. Was the engine running when you were trying to measure the voltage? The PCM won't attempt to activate the solenoid when the engine isn't running, and I don't think it operates at idle either.

 

I measured at the connectors tip, just across the two wires. I did do it while it was running but parked as well. I know usually once it runs and gets warm I could remove one or both of those tubes from the solenoid (thought it was a sensor) and feel air through them. Now its not doing anything...datamaster shows me just that there is a code 26. Possibility of messing up solenoid if by chance wires touched while rewrapping them?

As well injuneer I will check on the brown wire and see. Thanks man

 

Do what Shoebox suggested - measure the resistance of the EVAP solenoid, with the harness connector unplugged. I have a similar EGR solenoid and its 15 ohms, but I think the EVAP solenoid may be a bit higher. In any case, measure it. Why did you have to "rewrap" the wires? Touching them together won't damage the solenoid.

There should be vacuum present in the line coming from the side of the throttle body at all times. If there's no vacuum, the line is cracked or off the throttle body. There should be vacuum in the other line (from the carbon canister in the drivers rear fender) only when the EVAP solenoid is open. But your problem is not the vacuum, or the operation of the system. DTC 26 is caused solely by the incomplete or shorted electrical circuit at the harness connector.

 

Okay Ill check the resistance too and post back..I rewrapped the wires just because a while back I had problems with sensors (IAT and one on water pump, MAP) and had the wiring harness open and loose wires, but also never had any problems. Till I snipped connectors and heat shrunk all of it. I would have left it as "if its not broken dont touch it", but it looked something aweful.

As well my thoughts now are those two touching wires could mess up the pcm or I would have noticed something different?? Also that if the solenoid when being plugged in and not working (/broken) would be an incomplete circuit or short as well (DTC 26)?? Im reallyyy hoping so..