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Hello All -
Where to start... About two months ago I started to have an intermittent bog-down. Now it has become an everyday bog-down.
Car will go 70mph on the highway, but feels like it's holding back, a faint sputter perhaps, car seems sort of shaky - had an allignment 4 months ago. Around town I can barely notice anything (30-45mph) unless I come to a hill or try to put the petal to the metal(bad pickup). Turbo gauge goes into yellow... it really doesn't feel the same as an air leak or sound the same for that matter, but the car doesn't speed up. I am not getting good gas mileage either.
No intake leaks anywhere that can be found! Replaced a few hoses, just in case.
A little related history-
Original Turbo - no oil coming out exhaust, no white, blue or black smoke, turbo gauge reads like it always has
Original Catalytic- Could be clogged... one day, several months ago I swear I heard something pass through my exhaust, kinda made "crinkle" noises... problem didn't start then...
Most of the other stuff, knock sensor, AMM, compression by pass-valve, engine temp etc original to car as far as I know. Had car maintained by the same volvo machanic for years, don't know every part he replaced.
FPR, Oil & Filter, Gas Filter, air filter, spark plugs & wires, vacume hoses- all new
No- I haven't cleaned my throttle body, my task for the weekend along with a few others
Fairly new front gas pump, exhaust & intake gaskets
On cold morning, my car does have a bit of an eratic idle. Car does not stall, cut out, or do anything else but bog-down, engine hot or cold, weather sunny or wet, doesn't make a difference.
This is the strange thing... when I changed my FPR I took my brick out for a drive on the highway. Car ran great! It hadn't run like that for weeks! I was so happy! Then my radiator broke on the way home. After I replaced the radiator the car was back to driving in bog-dowm mode.
Now, I am seeking advice (any and all) because I have put quite a bit of money into my brick these past months (glad to do it). Pretty soon there isn't going to be anything left when I reach into my pockets. I broke down yesterday and stopped by a Volvo shop in the area. They think it may be my turbo. He said this because he put my car in reverse, gave it the gas, and took his foot off, watching the turbo gauge, he said it came right back down. This is why he thinks a need a new turbo. Anyone?
I read the FAQ, I will do the test- car cold, disconnect intake hose, reach in, try to spine wheel etc. this weekend. I just don't want to go ahead an replace the turbo if that isn't what it is.
Ok, I think that is it...
Very greatful for your help!!
Best Regards,
Anastasia
86' 740turbo 367,000
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