99 Volvo S80 no power

driver1234567890 · Post by **driver1234567890** » 09 Feb 2012, 21:20

I have a 1999 volvo S80 t6. Whenever I hit the peddle hard or just going up a hill the car has no power and will just stay around 2000 rpm and flacuate a little. I replaced the fuel filter and it worked fine for about 5 miles. Now its back to no power. I also have a o2 sensor code that im fixing this weekend. I'm not sure if that can be related or its something else. Pease help. Thanks.

ACk · Post by **ACk** » 09 Feb 2012, 22:07

Check for any vacuum leaks, turbo side, intercooler hoses, bad coil!!! Boost valve may have broken/bad vacuum hoses...

driver1234567890 · Post by **driver1234567890** » 10 Feb 2012, 07:27

I just looked up and I have codes p0056,p0158,p1174,p1184. I know the first two are for th o2 which I'm fixing today. But I don't think that'll fix the loss of power. Do thes codes help thanks for replying.

ACk · Post by **ACk** » 10 Feb 2012, 23:00

i myself am learning about codes , but if you search here on the S80 forum there are many code related topics. Ill try to find it..

driver1234567890 · Post by **driver1234567890** » 11 Feb 2012, 13:42

I replaced the 02 and it fixed the o2 sensor code, but still no power. I think im going to check the fuel pump next.

ACk · Post by **ACk** » 12 Feb 2012, 22:19

hopefuly your transmission is not slipping!!!!! make sure there is no cracks/air leaks in your intercooler! hoses and etc. check all your coil wires, connectors, spark plugs!

StL_PoopyPants · Post by **StL_PoopyPants** » 20 Apr 2012, 10:33

This post is way old and you might not see it but I'm sorry to say, it sounds like the transmission. If it's not keeping it's speed you are likely counting down the days that thing has left. Plus a bad transmission really puts wear on the engine.

driver1234567890 · Post by **driver1234567890** » 23 Apr 2012, 09:10

Sorry for the late response but it ended up being ba fuel. I filled it up with fresh fuel and it improved instantly. Thanks for all the help.