Searching for that hard to find part....

Need a car part and don't know where to get it or how to install it. Look here!
2rude84
Newbie
Posts: 8
Joined: Mon Apr 02, 2018 6:08 pm
My tercel:: 1987 Toyota tercel sr5

Re: Searching for that hard to find part....

Post by 2rude84 » Sat Sep 29, 2018 4:20 pm

looking for a TVSV for my 1987 sr5 does anyone know where i could get one or maybe a cross reference. maybe a bypass on the the dam thing all together.

User avatar
Petros
Highest Ranking Member
Posts: 10948
Joined: Sun Jan 28, 2007 6:31 pm
My tercel:: '84 Tercel4wd w/extensive mods
Location: Arlington WA USA

Re: Searching for that hard to find part....

Post by Petros » Sun Sep 30, 2018 12:03 am

they show up at irregular intervals on Amazon and auto parts sites, you just have to keep checking.

but it seems to me it is just as well to by pass it. you need to study the systems in controls and just set them to run in the warm condition. it should work fine, at worst it will be a bit baulky on first start up when stone cold, but should only take a min or two to run normal.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)

2rude84
Newbie
Posts: 8
Joined: Mon Apr 02, 2018 6:08 pm
My tercel:: 1987 Toyota tercel sr5

Re: Searching for that hard to find part....

Post by 2rude84 » Sun Oct 28, 2018 2:04 pm

Would the tvsv cause the car to not idle but instead rev up and down?

User avatar
ARCHINSTL
Goldie Forever
Posts: 6369
Joined: Sat Apr 30, 2005 1:52 pm
My tercel:: Goldie is a 1986 SR5 attualmente con Weber/also owned the first T4WD in STL in late '82
Location: Kirkwood, a 'burb of St. Louis

Re: Searching for that hard to find part....

Post by ARCHINSTL » Sun Oct 28, 2018 8:15 pm

2rude84 wrote:
Sun Oct 28, 2018 2:04 pm
Would the tvsv cause the car to not idle but instead rev up and down?
While this is THE longest thread, it may prove of help: viewtopic.php?f=4&t=1372&hilit=surging
Tom M.
T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"
"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain

User avatar
Petros
Highest Ranking Member
Posts: 10948
Joined: Sun Jan 28, 2007 6:31 pm
My tercel:: '84 Tercel4wd w/extensive mods
Location: Arlington WA USA

Re: Searching for that hard to find part....

Post by Petros » Tue Oct 30, 2018 2:31 am

reving up and down is a classic symptom of a vac leak. keep looking, you will find it. Usually easy to fix.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)

The Professor
Top Notch Member
Posts: 458
Joined: Wed May 12, 2010 6:38 pm
My tercel:: 1987 Tercel SR5 4WD wagon
Location: Western Washington
Contact:

Re: Searching for that hard to find part....

Post by The Professor » Tue Oct 30, 2018 8:24 am

Petros wrote:
Tue Oct 30, 2018 2:31 am
reving up and down is a classic symptom of a vac leak. keep looking, you will find it. Usually easy to fix.
You say that, but we still can't solve our cycling RPM issue... :(
1975 Subaru SuperStar wagon
1984 Subaru Turbo-Traction wagon
1984 Subaru Turbo-Traction hardtop
1987 Subaru RX 3-door
1987.5 Subaru RX 3-door
1987 Subaru RX Type-RA 3-door
1987 Toyota Tercel SR5 wagon
1999 Subaru Forester S
2002 Subaru WRX sedan

User avatar
Petros
Highest Ranking Member
Posts: 10948
Joined: Sun Jan 28, 2007 6:31 pm
My tercel:: '84 Tercel4wd w/extensive mods
Location: Arlington WA USA

Re: Searching for that hard to find part....

Post by Petros » Wed Oct 31, 2018 12:54 am

have you tried sparying puffs of carb cleaner, or starter fluid, around the vac lines while it is running? a change in rpm means you found the spot where the leak is located, the spray gets sucked in and will change the engine speed. remember to also check the all the gaskets surfaces in the intake side, it does not necessarily have to be a leaky vac line.

If that fails, sometimes one of the vac operated components will have an internal leak. this is more difficult to find, but you have to run through the simple tests shown in the FSM, testing each component one at a time, until you locate the bad component. sometimes you can speed up this process by pulling the vac line to each component and putting your finger over the ends. if the surging stops, you found the source.

the fix is usually the easy part, finding it can be very time consuming and frustrating. so take it one step at a time, systematicly eliminating each possible sources one at a time.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)

2rude84
Newbie
Posts: 8
Joined: Mon Apr 02, 2018 6:08 pm
My tercel:: 1987 Toyota tercel sr5

Re: Searching for that hard to find part....

Post by 2rude84 » Sat Nov 24, 2018 10:38 am

Intake leak I believe I replaced intake gasket and carb gasket. Runs good but dies once it warms up. I'm at a loss with this thing. Any help would be great trying to find time to test the tvsv.

User avatar
Petros
Highest Ranking Member
Posts: 10948
Joined: Sun Jan 28, 2007 6:31 pm
My tercel:: '84 Tercel4wd w/extensive mods
Location: Arlington WA USA

Re: Searching for that hard to find part....

Post by Petros » Mon Nov 26, 2018 9:43 pm

I do not think the TVSV malfunction would cause it to stall it out if it is bad.

It might if the AAP is bad, it will leak raw fuel into the TVSV and make it over rich, could stall it out. Usually it just runs rich. easy check, pull off vac line to AAP, if you find it full of full, cap off both ends. It will run fine after it warms up, it is only for cold starts.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)

Intermodal
Newbie
Posts: 10
Joined: Mon Oct 23, 2017 9:54 pm

Re: Searching for that hard to find part....

Post by Intermodal » Tue Nov 27, 2018 11:09 am

A local Toyota dealer (Folsom Lake Toyota) was able to source a TVSV for me (NIB!) It could be worth calling around to a local dealer/service shop. It was like three hundred bucks, but it was totally worth it as it got my car to pass SMOG.
Also, there's a used one on eBay with a buy it now of sixty bucks.

User avatar
ARCHINSTL
Goldie Forever
Posts: 6369
Joined: Sat Apr 30, 2005 1:52 pm
My tercel:: Goldie is a 1986 SR5 attualmente con Weber/also owned the first T4WD in STL in late '82
Location: Kirkwood, a 'burb of St. Louis

Re: Searching for that hard to find part....

Post by ARCHINSTL » Tue Nov 27, 2018 7:07 pm

Intermodal wrote:
Tue Nov 27, 2018 11:09 am
A local Toyota dealer (Folsom Lake Toyota) was able to source a TVSV for me (NIB!) It could be worth calling around to a local dealer/service shop. It was like three hundred bucks, but it was totally worth it as it got my car to pass SMOG.
Also, there's a used one on eBay with a buy it now of sixty bucks.
WOW - THREE HUNDREDS of $ ! !
:shock: !
T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"
"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain

gnarnold
Top Notch Member
Posts: 325
Joined: Sat Jan 04, 2014 7:28 am
My tercel:: 1983 SR5 4x4 with a tummy tuck and a nose job and now a pace maker!
Location: jordache ,ca

Re: Searching for that hard to find part....

Post by gnarnold » Sat Dec 29, 2018 7:01 am

i remember when my tvsv had a crack .the car ran like crap i got a brand new one for 80-85 bucks ..AND .THATS FROM THE DEALERSHIP! TRUST MEit eventually cracked in half .and although i did not have to resort to bypassing some of the would be ports on the tvsv .because once it cracked in half the car would no run at all i tried jb weld i tried .2 part epoxy .they got you by the short ones with that price
I used to laugh at the man with a pinto :lol: , until I became a humble servicer of a tercel :|

Post Reply