07-29-2006, 11:01 PM
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#1 |
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Stock
Join Date: Jul 2006
Location: bakersfield, ca
Posts: 13
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boost problem
hey i needed to know if anyone can help me. i have a 94 supra tt with a 98 jspec motor in it. my car was boosting fine until i replaced my water pump. as soon as i started it up for the first time i had no boost. ive checked my intercooler piping and no leaks, same with my b.o.v. i took my piping apart at the intake manifold reved the engine and its getting plenty of boost. im thinking of a vacume leak. there is an open nipple that is sucking pretty hard on the back of the intake manifold but i cant find a hose. ive also checked my wastegates and neither ar stuck. my care was not running for about 3 months due to complications on finding the jspec pump. please let me know if you can help onesicsupra@yahoo.com thanks
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07-31-2006, 11:01 AM
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#2 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
In theory you shouldn't have had to remove anything to do with your tubocharging system in order to replace your water pump. I'd suggest that you visually inspect around the area of your water pump to ensure that everything is plugged in on the harness (eg. your wastegate VSV). If you don't find anything obvious, you'll probalby have to go through all of the troubleshooting steps in the TSRM...
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. |
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08-06-2006, 09:25 PM
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#3 |
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Stock
Join Date: Jul 2006
Location: bakersfield, ca
Posts: 13
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yeah i have no egr valve though because it is a jspec motor. im thinking mabe my timing is off a little or there is a couple little relays under the water pump one end has vacume lines and the other end has wires from the harness mabe those got fried when the pump sprayed water on them. i am completly stumped otherwise. tomorrow i take it to a japanese car specialist mabe he can find something wrong.
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08-08-2006, 01:20 AM
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#4 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. |
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08-08-2006, 01:54 AM
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#5 |
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Stock
Join Date: Aug 2006
Location: Connecticut
Posts: 5
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Try the temporary TTC mod to see if it's a vsv problem. I haven't heard of a bad VSV causing a no boost situation, but it's worth a shot. Double, triple, and quadruple check all intercooler piping clamps.
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08-14-2006, 12:37 AM
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#6 |
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Stock
Join Date: Jul 2006
Location: bakersfield, ca
Posts: 13
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i pulled apart the vsv's and there is no pressure on either of them. i read something that said it may be my pressure tank. what do you guys think? i have no idea of where the pressure tank is so if someone does please let me know so i can check that. thanks
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08-14-2006, 02:36 AM
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#7 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. |
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08-16-2006, 02:08 AM
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#8 |
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Stock
Join Date: Jul 2006
Location: bakersfield, ca
Posts: 13
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hey guys i tried the true twin turbo mod and it worked so its not the pressure tank. thanks for reccomending the mod to me i appreciate it and again thank you!
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