ADD vacuum question
#1
Registered User
Thread Starter
Join Date: Feb 2006
Location: CT
Posts: 455
Likes: 0
Received 0 Likes
on
0 Posts
ADD vacuum question
Hello all. I have a 93 That is not cooperating. So it has the add 4wd system and 4wd is not engaging. I have traced the problem to no vacuum from the engagement vsv. My question is, how do I test the vsv and what actuates the vsv? Is it a switch on the tcase?
#2
Registered User
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes
on
649 Posts
For all questions, consult The Good Book: http://web.archive.org/web/201204242...26addcontr.pdf
There are two VSVs. Do you have vacuum TO each? The VSVs are driven by 12v; the ground side should be white-black (which you will confirm with your multimeter) and you can run 12v to the "other" side to see if the VSVs work.
There are two VSVs. Do you have vacuum TO each? The VSVs are driven by 12v; the ground side should be white-black (which you will confirm with your multimeter) and you can run 12v to the "other" side to see if the VSVs work.
#3
Registered User
Thread Starter
Join Date: Feb 2006
Location: CT
Posts: 455
Likes: 0
Received 0 Likes
on
0 Posts
For all questions, consult The Good Book: http://web.archive.org/web/201204242...26addcontr.pdf
There are two VSVs. Do you have vacuum TO each? The VSVs are driven by 12v; the ground side should be white-black (which you will confirm with your multimeter) and you can run 12v to the "other" side to see if the VSVs work.
There are two VSVs. Do you have vacuum TO each? The VSVs are driven by 12v; the ground side should be white-black (which you will confirm with your multimeter) and you can run 12v to the "other" side to see if the VSVs work.
#4
Registered User
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes
on
649 Posts
The good news is that this part is only $425 (if you get it online; more from a brick-and-mortar dealer) http://www.toyotapartsoverstock.com/...544035010.html So I would at least check the coil for continuity first (you could have a good coil but bad valve, but one thing at a time).
Running the part number I stumbled on this used part: http://www.ebay.com/itm/like/131636133994?ul_noapp=true&chn=ps&lpid=82 Since it just as old (probably older) than the one you have now, no telling how long it will last. But compared to dealer price you might think of stocking up on this part just in case!
Thread
Thread Starter
Forum
Replies
Last Post