Weird xcv70 problem

Koloj1551 · Post by **Koloj1551** » 27 Mar 2020, 09:48

Ok so this is my 3rd xcv70 it's a 2001 xcv70 awd has 150,000 no mods or tunes

First off this is the first one I have had that has super bad mpg I replaced the coils and plugs OEM Volvo and the cbv and all vacuum lines also new tcv. I have what sounds like a bad turbo leak more acceleration more boost sounds like consent blowoff I have checked all my pipes and hoses physically took em off washed it get 12 psi boost sometimes I put a better throttle body in the car no flux in the idle and it runs good sometimes is their anyone on here that has had this problem and found what it was cause ita bleeding my gas pockets and performance is up and down driving me crazy also have no codes

Post by **chrism** » 27 Mar 2020, 11:21

Possibly a restricted exhaust system?

Post by **abscate** » 28 Mar 2020, 05:03

Kiloj, please take the time to post in complete sentences. One of the very few rules here is we don’t accept text talk, regardless of phone- tablet- computer entry method

Any leak in the induction will mess up both performance and mileage, so it might be good to smoke test it to rule that out

Koloj1551 · Post by **Koloj1551** » 28 Mar 2020, 08:41

Thanks for your replies. I will take the advice can u simply disconnect the down pipe from the turbo and blow air into the exhaust to check the flow of my exshaust? Also the smoke test I was gonna try too I was making a smoker I just need get some epoxy in town. Were are the best places to put the smoker on for leaks to get the best results? One more thing I have noticed it gets super hot sometimes by my petal mostly highway driving the heat is not on.

Post by **SuperHerman** » 28 Mar 2020, 09:27

Couple of items. 1) What is your MPG and in which driving environment? 2) How did the spark plugs look when you replaced them? 3) Where you put the smoke tester depends on what circuit you are testing. Basically just pull a hose for that section or plug it post air filter. 4) How does air filter look? 5) For checking for blockage of Cat you can pull the O2 sensor and move around for a look as the hole will be small - maybe a small mirror and flash light will help.

Post by **shiloh51933** » 06 Apr 2020, 08:36

You really have to take off the tubing for the turbo system to inspect for leakage. You won't get any DTC's for leakage in one of those soft tubes. Check all of your vacuum lines for your EVAP system. Do you a scan tool for reading long term and short term fuel trims?