Sensor on the Therm. Housing - What is it called?

Chambers · 05-28-2007, 03:24 AM

Hi, what is this sensor called and is my sensor broken? I found a vacume line sitting around that had a pice of plastic in it that looked like it once connected to it. Thanks.

Kuban · 05-28-2007, 03:42 AM

i believe its the vsv, that has to do with emissions. my vac line is blocked off. then again so if my egr. If you dont care about emissions and you arent noticing a difference in performance than id say cap off the vac line and let it be.

Chambers · 05-28-2007, 03:46 AM

Well the vac line was running to something else, it looked like it was broke off of the sensor on the therm. housing, so I was wondering if I should replace it, because to me a vac leake is no good, no matter what its for. Thanks.

btwilson86 · 05-28-2007, 04:16 AM

That sensor is the BVSV, shown in the TSRM. Check out this link (turbo model) or this link (N/A model) for vacuum line diagram showing you what lines connect to them. I just finished fixing a vacuum leak in my 87 N/A; it hasn't been fun. One of my problems happened to be that I had the two vacuum lines mixed up at the BVSV on the thermostat housing... oops

*Line L=300 on both diagrams connects to the purge port on the charcoal canister

IHateHacks · 05-28-2007, 01:45 PM

Go to your local Toyota dealer and order a new Bimetallic Vacuum Switching Valve (BVSV).

Chambers · 05-28-2007, 03:46 PM

Ok, thanks for the help!!

**NEW QUESTION**

Ok, from the diagram btwilson86 gave me for the NA model the "L=300" line is connecting on the bottom, and my "L=300" was connected to the top and it broke off, does it really matter that one goes on top or bottom? Thanks.

05-28-2007, 03:24 AM	#1
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	Sensor on the Therm. Housing - What is it? Hi, what is this sensor called and is my sensor broken? I found a vacume line sitting around that had a pice of plastic in it that looked like it once connected to it. Thanks. Last edited by Chambers; 05-28-2007 at 03:42 AM.

05-28-2007, 03:42 AM	#2
Kuban 3" Exhaust Join Date: Feb 2007 Location: Milwaukee, WI Posts: 174	i believe its the vsv, that has to do with emissions. my vac line is blocked off. then again so if my egr. If you dont care about emissions and you arent noticing a difference in performance than id say cap off the vac line and let it be. __________________ -868 Miles on new jasper engine -All hard pipes -0.57 trim ct-26 -greddy type S -greddy profec b -apexi ride high 7 way adjustables -eibach springs -slotted rotors -mkIV TT rims (front)245/45/17 (rear)285/40/17 -targa -greddy turbo timer -egr eliminated -3" turbo back, no cat, no resonator, Apexi N1 back. -n/a cams Theres others ill think of later.

05-28-2007, 04:16 AM	#4
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	That sensor is the BVSV, shown in the TSRM. Check out this link (turbo model) or this link (N/A model) for vacuum line diagram showing you what lines connect to them. I just finished fixing a vacuum leak in my 87 N/A; it hasn't been fun. One of my problems happened to be that I had the two vacuum lines mixed up at the BVSV on the thermostat housing... oops Line L=300 on both diagrams connects to the purge port on the charcoal canister __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels Last edited by btwilson86; 05-28-2007 at 04:18 AM. Reason: Forgot some info...*

05-28-2007, 03:46 PM	#6
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	Ok, thanks for the help!! NEW QUESTION Ok, from the diagram btwilson86 gave me for the NA model the "L=300" line is connecting on the bottom, and my "L=300" was connected to the top and it broke off, does it really matter that one goes on top or bottom? Thanks. Last edited by Chambers; 05-28-2007 at 05:32 PM. Reason: New Question

05-28-2007, 03:46 AM	#3
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	Well the vac line was running to something else, it looked like it was broke off of the sensor on the therm. housing, so I was wondering if I should replace it, because to me a vac leake is no good, no matter what its for. Thanks.

05-28-2007, 01:45 PM	#5
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Go to your local Toyota dealer and order a new Bimetallic Vacuum Switching Valve (BVSV).