I can't find the part # for "Solenoid, Valve (purge control)" but it's listed in the repair manual in the vacuum hose diagram page and elswhere. The ACV valve Solenoid looks like it's the same part (18-740B on pg 1-E 5 of parts fische) but I can't be sure. The one I broke connects to both the oil filler pipe and then with the silver check valve to the extension (UIM) manifold.

Can't find thermosensor part # either. Is it the water level sensor or the thermosensor that is bad if the water light and buzzer won't turn off?

 

 

Believe it or not, ALL the vacuum solenoids are the same. The only ones that are special are the duty cycle solenoids. Not only are they all the same, they're IDENTICAL to the solenoids used on the 1st and 2nd gens! Some have small air filters, and sometimes the filters are in different spots, but the filters pop off and pop on wherever you want them, or can be removed all together.

Anyhow, long answer short, you can swap those solenoids around no prob.

The water level sensor is on the front of the thermostat housing with one wire going to it. If there's a problem with that (open circuit) the buzzer will sound and the light will illuminate. The sensor grounds itself in the coolant - if the coolant gets too low and there's an air pocket, the ground will be broken and the buzzer goes off. If you need to, SHORT TERM, ground the wire going to the sensor with a jumper wire or something. But, that bypasses a big safety feature on the engine - only ground it if you've got another one coming in the mail!

BTW, I've got quite a few 2nd gen solenoids saved up that are in good shape if you're short one and need a solenoid.

Dale

 

Reading your post again, you ARE talking about one of the duty cycle valves - my bad! I do believe those are the same design and are interchangeable.

Duhhh!

BTW, the '89-91 turbos do use a similar duty cycle valve for boost control - I've got one of those saved up too .

Dale

 

ok thanks, i'll just order the ACV solenoid then and use it for the purge control.