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Unfortunately I broke the bottom nipple off of mine…. I’m going to try some good ole super glue but just in case that doesn’t work it’d be nice to have a good one. So anyone willing to let go of a good TVSV?

... blocked with black gunk, swapped all the diaphrams that weren't already swapped when the carb was rebuilt, replaced the fuel filter and the TVSV. Still nothing, I replaced the last diaphram just now and started it right up (super cold might I add) and it only ran for 5 or so seconds before ...

I would be interested in the TVSV, egr and HAC. I can message my address and send Paypal. Thanks for offereing to folks vs throwing them out.

Chris

... it is cold. once warmed up, the system cuts out. if the diaphragm is cracked or damaged the system will suck fuel from the float bowl into the TVSV and into the intake manifold, it makes the front two cylinders run way too rich. it if the rich running goes away with the vac line capped off, ...

Are you talking about the tvsv? The little plastic deal with 4 or so vacuum ports on it? If so, i may have one for ya. Yes sir! it's the TVSV that broke. For some reason I was thinking T-VIS, must've had 4A-GE stuff on the mind. If I ...

Are you talking about the tvsv? The little plastic deal with 4 or so vacuum ports on it? If so, i may have one for ya.

I deleted my own TVSV, but if this wagon still has it I’ll gladly grab it for someone else.

Fof E,

We always try to grab the TVSV when available, just in case it's still good also.

Chris

... the fan switch in the radiator. I previously had frenkensteined a Camry radiator in there and modified the fan switch by placing it where the TVSV goes (not in use since I have a weber carb). I now have a proper radiator and need to move it back. As it is now, the fan runs more than it should.

His word holds as much air as a broken TVSV...

I felt that.

... more context for those interested, but I would HIGHLY suggest to avoid doing any business with David Udara. His word holds as much air as a broken TVSV. [/rant]

... to see if there fuel in the vac line has fuel in it, that runs from the AAP (auxilarly accelration pump, on the front corner of the carb) and the TVSV (device with vac lines on the coolant outlet on the head). it should be dry, if it has fuel it means there is a bad AAP diaphrame, simplest is ...

... can cap off both ends and you should pass. you only need that for cold start to prevent stumbling when cold, it is cut out of the system by the TVSV as soon as it warms up, so capping it off will not affect the emissions. when the diaphragm gets a leak it ends up making the two front cylinders ...

Petros wrote: ↑Wed Jul 22, 2020 9:00 pm (careful of the TVSV valve, it is platic and easy to break when old and brittle, you need it!).
Good luck.

Not that it matters, but the first gens got an all brass tvsv. still brittle though...

that by pass tube is an easy fix, remove the housing and it is a slip fit. get it off (careful of the TVSV valve, it is platic and easy to break when old and brittle, you need it!). take the tube to an auto parts store and they will match the o-ring size. put it back on with ...