Hey guys, im new here. My name is Myles. I am looking at this 760. It is a 93 and has 120000 miles on it. Its auto and it is turbo, a 4 cylinder. For 1000 dollars. Anyways, the car is in great shape, looks like and old lady drove it, ac and the works. But it makes abosulutely no power. The turbo had no shaft play, they said it was new, it looked it. It didnt look like there was any form of boost control, just a vacuum line running from the intake side of the turbo to the waste gate actuator. So i am assuming it was running open wastegate. I listened for boost leaks and couldnt hear any, you know, usually llike a hissing noise, right? (thats what one sounded like on my miata) The wastegate rod was unhooked, we discovered before we drove it. we hooked it back up. When we floored it the boost went a third of away into the positive side of the turbo gauge. Im not sure where it is supposed to go. It felt way slower than my mom's auto subaru legacy. And that thing is slow! Now i think i am looking for something simple. Maybe a clogged cat? Or, timing that is retarded like 20 degrees. Thats kinda what it feels like. No timing. I feel lots of heat from under the car, and the exhaust coming out the back is hot, but clean. It feels smooth in its slowness though. It isnt like it is missing, or anything like that. Which makes me think it is more timing related. I was wondering if there is any common problems related with this happening? If so what are they, and is 1000 bucks a good deal? Oh yeah, i searched "no power" in the search box, but didn't find anything. Any advise would be appreciated. Thanks!

 

Check the intercooler hoses really good they won't always hiss when leaking.
The boost needle is about normal best bet to find how much boost it is making is to hook up and after market guage.

The only way the timing can be off is by the timing belt. The Dist won't affect it due to computer controlling the timing.

Did they say it was boosting good then just stopped?

 

I think theexhaustis suppose to feel "luke warm" not hot.

 

Ok, ill check those hoses again. Those are the symptoms that my buddies fd rx7 had with a clogged cat. It boosted properly yet had like 80 hp. We gutted that thing and it flew. (I live in TN no emissions) So with heat radiating from the bottom of the car... to the extent i feel with my general experience with cars, is a higher than average amount of heat, would lead me to the cat. But i have been wrong 2000 times too. My grand prix did that too, and it was the rubber intake hose (before the turbo) caving in. But i guess that did effect the boost. Oh well, should i buy it for 1000.

 

So is it running better now? 1000 bucks isnot bad for that many miles, condition, and year. Offer 800-900, see what they say, but$1000 is not a bad price.

 

One way also to test if the cat is clogged is to pull the O2 from the pipe and drive it and see if it drives better. I have done that before.
Or if there is also a plug in the pipe that is extra pull that then drive it.

 

Im a retard it is a 940, i guess its time to move this, it is a 2.3 turbo. That i know. I checked the hoses and junk, theyre fine. So it has alot of white gas smelling smoke when it starts, and drives at first. There is a crack in the maf. And it still feels like it is running no timing/ has a clogged cat, the cat i will check next since it doesnt have adjustable timing. Thanks.

 

Replace the MAF, check compression (9-11bars or 130-150psi), and change the cat, just to be safe. Good luck.

 

you read my mind, the spark plugs are as white as a ghost.
Its it possible it is running super lean and causing the computer to pull mass amounts of timing?
Edit- how do you pull the engine codes on a 93?

 

On my 91 745t there is a little black box in the engine bay on top of the driver side strut mount. I am not that familiar with the 940 butI believe they are pretty similar.

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http://www.troublecodes.net/Volvo/
That tells you how to pull them.

 

Thanks for the link, i did that to pull the codes and it just flashed 1-1-1 Which was no codes found right? I pulled out the plug before the cat, and nothing. Still has 60 horsepower. So here is another interesting thing. We run the car, and once it warms up and we turn it off, it doesn't start again. Whats up with that? I would say something in the ignition system. We can shoot some ether in there, and it fires right up. Runs just fine, or as fine as it did before we turned it off. What do you all think? Sounds slightly like a fuel supply issue. We has some upgraded injectors off a turbo saab i used to have, and threw them in there, and didn't get any different, so we know it isnt the injectors. The fuel stinks thats in it. But it does run on it. And it starts on it while its cold. So could it be bad fuel, triggering the knock sensor, and causing it to pull obsene amounts of timing? Or am i thinking too far into this and looking over something dumb like a fuel filter.

 

http://s277.photobucket.com/albums/k...t=SNC11861.flv

http://s277.photobucket.com/albums/k...t=SNC11862.flv

Well, one of those is the acceleration. and one is the low rpm stumble it has. Ps i feel retarded for thinking it was a 760 instead of a 940. I did a little research and realized i told you i had a turbo 6 cylinder. Anyways, i also found out that it makes 162 hp and 195 lbft, or somewhere in there. Im used to driving around a 280 hp 2000 pound car though, so i thought i would post and let me get your opinion.

 

It should pull a little better then that. Yeah, they only have that much hp and lbft, andthe car weighs about 3000-3300, I think, but once you get a boost control on that thing and put it at 11psi(stock 5-7psi), it haulz AZZ. I haven't dyno'd mine yet but I am hoping I canbreak 220whhp, and like maybe 300whtq, once I'm done with my mods.
PS mine only weighs about 3200 with me in the car.

 

Well thats cool, with it being a new turbo, they could have screwed with the wastegate... or something. Well ill get a boost gauge and boost control it and see what happens. Lord only knows whats done to this car, it sat at a used car dealership for like 4 years.

 

Yeah, you never know with used cars. Do the gauge first and see what it is at Should be 5-7psi. If you go the gaugepods.com and go to the volvo section, you can see mine. It is the first single-pod 700/900 link. I would do a stage zero(or what everyou haven't changed yet)on the car before you do the controller.Good luck and have some fun with it.

 

whats a stage zero? or should i search?

 

it has most of that, i work at autozone, and the dealer bought all his parts from us, thats how i found out about it. It has a new cap/rotor/wires. He bought some crusty champions for it just because they were cheapest. So i need to change those, i am an NGK guy myself. He did a new fuel filter, but it sat for 4 years. I was gonna sea foam it. And get some ngk 6, or maybe even 7 heat range plugs. It has a new battery, and air filter.. which i will ditch for making a cai though. I know it needs a new alt belt because there are 2 teeth missing out of it.

Edit- oh yeah, what size are the stock injectors?

 

To me the exhaust sounds funny. Is there any leaks in it?

A quick test to see if it is a boost issue is to just pull the Vacuum hose off the waste gate and take it for a quick drive.
It will run at MAX full boost so be careful. But you can do it for a quick test.

 

Yeah, i took out that plug in front of the cat to try to see if it was clogged. I'll go yank that hose off. Well not yank, but you know. I feel like yanking it.