I have a 90 TGP with a problem. THe car runs very well except when I really push it. When I floor it it will suddenly loose boast and I immediatlyt lose power. I can regain power by backing off the throttle. It is like I am running out of fuel or air. It only does it at high Rpm under high loads. I saw a post about oil back up in the wastegate may cause this problem. If this is true please post instructions to fix. I do not want t short cut I want to fix it right the first time.
Thanks in advance for any help
Tim
Does it make a sound? Maybe your intake hose is colapsing?
What is the gauge reading on the dash when you get this sudden loss of power? Do you get the service engine soon light right after the loss of power?
:shock: When is the last time you changed your plugs and wires??? I've fixed several poepls TGP's that had this problem and the plugs and wires fixed it. :drinking:
I am not sure if the intake hose collapses I will probably look into a different air setup to check. The plugs and wires are only one month old and no the engine service light does not come on. WHat would it mean if it did? The boost guage will read pretty high, maybe 11 or 12.
thanks for your ideas
If I take off the factory air filter ducting there will be no air pulled through my transmission cooler. That can't be good. Did you guys put a different trans cooler on when you went to a K & N filter directly on the turbo? Or did you just let your trans get hotter?
Tim...
It is an illusion that the Air inlet draws air across your trans cooler. I thought the same thing when I looked at mine a few months back. The stock air box inlet draws air in from behind the passenger side headlight bucket. There is NO duct work going down to the tranny cooler. The tranny cooler has a duct that goes out and tries to get positive pressure from the front air dam.
The gauge in our cars are not to very accurate...but if you are getting near to full deflection and your car quits, I would think you are hitting the 9lbs boost safety limit and it is cutting the fuel off. Only problem is you say you don't see the "service engine soon" light. Do you see that light everytime you turn the key on? Normally the light will come on if you get an overboost situation... 8)
Quote from: idbeast:shock: When is the last time you changed your plugs and wires??? I've fixed several poepls TGP's that had this problem and the plugs and wires fixed it. :drinking:
HEY JIM
I talked to Jeff yesterday and he stated you know where to get some black gel for the TGP emblem?? do they have white also? if so let me know because I'll send you $$$ to get it for me the Stores around here look at me like Im nuts with the stuff I ask them for.
ALSO could I get those Decals in simple Reflective white? if so let me know the Price. also how is the STE decal comming along?
and
second or Fourth
where can I get some Good Plugs for her? they want me to put Autolites in it because that seams to be the only none plat plugs around here and I HATE AUTOLITE they said I could get NGK's anyone Run these in there TGP/STE? I run them in every thing else but not this because its my baby and I dont want to mess her up.
Oh and as for the intake hose colapsing? HOW mine has a Spring type thing {keeps the hose open} in it like old style Rad hoses.
do you have and open air intake? if so you will get immediate boost cut because your are exceeding 9.5psi
Hey Guys
I am experiencing boost loss upon acceleration, I can get boost back if i back off the throttle. When that happens the Service engine light comes on then goes out after a few secons when I back out of it completely. Has anyone ever experienced this? :?
Quote from: TimI have a 90 TGP with a problem.
Tim
Now there's something you don't hear everday! :mrgreen: :drinking:
I recently purchased a 90 TGP that does the same thing. It goes pretty good until I get on it really hard. When the guage gets up to about 12 lbs. of boost (don't know how accurate it is) the car suddenly loses power and the boost guage drops into the negative boost range. I have to back way off on the pedal before it will go again. The car has 102,000 miles on it and seems to have been well maintained. Does anybody know what this could be? I am new to these turbo cars. Thanks.
Check the boost control solenoid. I had the same problem and I had come to find that the vacuums lins going to it were routed wrong. Once I switched them, It worked fine after that. Take a look at this post and it tells you the routing for the lines to it. Hope it helps
http://www.netavalanche.com/tgp/viewtopic.php?t=522
12psi is that on the stock guage or aftermarket? If its the stock guage forget it that thing is there for looks. If its an aftermarket then you must be chipped.
It's the stock guage. Like I said I don't know how accurate it is. Until I found this site I had no idea what the maximum boost was supposed to be.