Sensor on firewall

On my '97 Cherokee, 4.0, auto, 4x4 there is a little sensor looking thing mounted to the firewall. It is on the passenger side. It has a some wires with a plug hooked into the top and two vacuum lines coming out the side. My guess is it controls some kind of vacuum switch???

One of the lines runs behind the engine and into the intake manifold. I could not see were the other one went.

Anyways, the little sensor thing is ticking like mad. A real fast tick,tick,tick. You can here it with the engine running. When I touch it I can feel it ticking. I never really noticed it before and I'am trying to figure out if it is normal.

I just did the 99+ intake swap and I checked and then double checked to make sure everything was hooked up. Is it supposed to tick like that??

Brian

Purge Valve for the charcoal canister?

Very possible. Is the charcoal tank the big black tank mounted right below it on the passenger side??

Is it supposed to tick that fast???


Brian

Purge solenoid.

I picked this tid-bit up on a post a while back. Sorry I can't remember who posted it, but it looked worth saving:

Mopar has a 2 piece rubber muffler for the purge solenoid you could try? PN #'s for the 2 pieces are:4612717 & 4612718. It runs about $20 for both of them. That solenoid is the same on most chrysler built vehicles.

Ivan

Jldiaz,
I beleive that is what I'am trying to describe.

Is it normal for the purge solenoid to tick really fast at idle??? The only reason it concerns me is because I never noticed it before. But lately it has been really loud and fast. If I touch it I can feel it clicking like mad.

Brian

I just pulled mine off the mount and zip tied it. -fixed it

OK, I'll give that a try.

Brian

Sorry for the delay. My DSL Provider blacked out.

About how fast does it tick (Times/minute). 100 wouldn't be too often.

I havent had a chance to get over to it yet. (In storage)

You said 100 times a minute is normal. I will have to check the next time I start it. Funny that I never noticed before.


Brian