2000 Dodge Van EVAP Canister Purge Solenoid.

Tiny
STRYDER88
  • MEMBER
  • 2000 DODGE VAN
  • 130,000 MILES
Hello.

Ram 1500 Van 5.2L engine.

This solenoid, is it suppose to under certain conditions let vacuum to the evap canister at idle? I would describe its action as a sort of lapping of the canister. Also with vacuum guage connected to the non vacuum side of the solenoid and manifold vacuum connected and electrical harness plugged in at idle the vacuum gauge indicates the lapping going from 0 to about 5 but there are times when the needle will just sit at 5 tho I can feel the diaphragm cycling inside. This indicative of a bad solenoid?

I should say that the engine starts fine. However from a cold start it goes right into a low 500-600 rpm idle skipping any kind of warm up fast idle. The PCM is advancing the timing 27-36 degrees at idle. If revved the engine sounds normal on 1st rev but any subsequent revs the sound changes to an almost shallow tinny restricted rev. It idles I wont say rough but it is off to be sure. When throttle is applied under load there is a substantial lack of power and there comes a very deep bellow from the engine. It is however constant with no sputtering, surging, hesitating, cutting out. It never dies and starts clean and quick. At engine idle, normal operating temp vacuum gauge reads 25 or 30 cant remember which but it is constant and increases with operating temp from a cold start the vacuum line to the solenoid. Injectors are very loud and clacking. Gas is being burned at enormous rate. 30 miles ate a notch under half a tank.

Also, when under load Air vents reroute air to defrosters then back to vents when load is lifted <--- this has happened for along time. Back to the guy that owned van before me.

Its been given a tuneup. Spark wires ran correct to not induce. Took out the IAC valve, cleaned it and the port on the throttle body then reset it. Tightened/made sure tight manifold and throttlebody bolts. No leaks from gaskets.

Check Eng light not/never illuminated. PCM shows no flagged trouble codes. Fuel pump sounds as it has always sounded and seems to be able to provide. Provide almost half a tank in 30 miles! Ahhh! Haha.

Pray you, tell me. What is it that it is wrong?
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Friday, June 21st, 2013 AT 9:02 PM

4 Replies

Tiny
HMAC300
  • EXPERT
Check the fuel pressure and check cam and crank sensors for resistance. The evap canister shold only work while go;ing about 30 mph
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Saturday, June 22nd, 2013 AT 5:51 AM
Tiny
STRYDER88
  • MEMBER
Ok will do and report back the findings if I may. With the evap canister - normal operating temp at idle if disconnected at canister port it is distinctly lapping vacuum. If left connected the lapping can also be felt touching the solenoid. It is a ryhythmic lapping engaged by electric power to the solenoid from the PCM it would seem. The lapping will rise and fall in tune with rpm also. But the checks I will complete with findings before I go further.
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Saturday, June 22nd, 2013 AT 12:23 PM
Tiny
HMAC300
  • EXPERT
Scan for codes as there should be one if evap canister is bad.
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Saturday, June 22nd, 2013 AT 2:02 PM
Tiny
STRYDER88
  • MEMBER
Will do. Going to get on this today. Right now actually and post up what I find. To be sure tho, there are no trouble codes except the P0443 but ran the engine with it disconnected. Never a trouble code. Little side note, the water pump recently has been replaced though without a hitch on that. Yes I clapped for myself when the metal tube that comes out the pump with just that lil ol' o ring didn't leak a drop first try, haha. But, I ran some sea foam through the induction system. But not so much as a puff of smoke to come out the tailpipe. That strange? My 89' Dodge Ram Wagon put a cloud on the entire neighborhood. This van. Booooriiiinng haha. Ok im off to test! A compression and leak down be performed as well I think.
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Sunday, June 23rd, 2013 AT 8:27 AM

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