Just Got A MK3

btwilson86 · 02-09-2010, 03:21 AM

Yup, that's a BVSV. It at the very least should help a little, although I can't say for sure if it'll completely fix it.

Actually, since you capped off the lines it probably won't change the revving. It will, however, help your evaporative emissions system work properly.

Since there are quite a few vacuum lines on the car, I'd suggest spending some time running through the engine bay and checking that everything is hooked up properly. I had to do this on my first 87 (N/A), and it really didn't take that long.

Click here for the vacuum routing diagram (note that this includes all the lines connected to the engine, but not all of them in the engine bay). Thanks to green7mgte for the link in another thread.

Cyto · 02-09-2010, 04:23 PM

Check the rest of the vacuum lines. Here is the diagram.

http://www.cygnusx1.net/Supra/Librar...spx?F=1708&P=5

If you haven't bookmarked this site go ahead and do it. It has saved my ass on many occasions lol

cre · 02-09-2010, 06:11 PM

The hose coming out from the fender is the washer fluid line.

The revving thing is most likely a defective, stuck or disconnected ISCV (Idle Speed Control Valve): http://www.cygnusx1.net/Supra/Librar...ction=FI&P=106

02-09-2010, 03:21 AM	#1
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Yup, that's a BVSV. It at the very least should help a little, although I can't say for sure if it'll completely fix it. Actually, since you capped off the lines it probably won't change the revving. It will, however, help your evaporative emissions system work properly. Since there are quite a few vacuum lines on the car, I'd suggest spending some time running through the engine bay and checking that everything is hooked up properly. I had to do this on my first 87 (N/A), and it really didn't take that long. Click here for the vacuum routing diagram (note that this includes all the lines connected to the engine, but not all of them in the engine bay). Thanks to green7mgte for the link in another thread. __________________ 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

02-09-2010, 04:23 PM	#2
Cyto 3" Exhaust Join Date: Jul 2009 Location: USA Posts: 103	Check the rest of the vacuum lines. Here is the diagram. http://www.cygnusx1.net/Supra/Librar...spx?F=1708&P=5 If you haven't bookmarked this site go ahead and do it. It has saved my ass on many occasions lol __________________ Proud owner of a 1988 Toyota Supra Turbo, 105k Miles, and great condition. I might have to sell it to help pay for school so here's the link. http://www.toyota-supra.info/forums/...html#post72357

02-09-2010, 06:11 PM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The hose coming out from the fender is the washer fluid line. The revving thing is most likely a defective, stuck or disconnected ISCV (Idle Speed Control Valve): http://www.cygnusx1.net/Supra/Librar...ction=FI&P=106 __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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