I own Volvo S40, the problem is this that it doesnt accerlate that mcuh as it used to be. Is it bcuz its that new? Or can there be any other problem too. Now plz advise me wht to do. ;)

I also have the same problem with my 2004 S-40, it will drive good and accelerate fine when the outside temp is between 30-60 degrees, but here in fla it gets very hot in the summer and then the s-40 drives like a turtle I have taken it in to the dealer but they say there is nothing wrong with it. they just drive it around the block and don't give it a chance to heat up
I got stuck with a lemon... and will never buy a piece of crap Volvo again!
I always use 93 octane fuel.
I have tried a K&n air filter bit it didn't make any difference
Also using 103 octane boost didn't help either. Like I said the car is crap!!!
I just wish I still had my Honda...

ONE UNHAPPY VOLVO OWNER!

Do you know if your car has all the latest software in it?How many miles are on these cars?

I used to own a 03 40 and had the same problems in high temperatures, slow accel. Hot air will kill your turbo`s ability to make power something to do w/compression. Try to get a bigger intercooler http://texasautomotiveperformance.com/ sells a great one worth the investment 25hp gain dyno proven.

For more hp gain hang around http://s40concepts.net/ Plenty of tricks there.


As for Hondas i hate them. Ugly cars that are not even that reliable anymore. New accords need auto tranny swaps about every 30 thousand miles.
Girlfriend had a coupe and it was a very troubled car.

streering wheel controls stopped working at 1000 miles

cd player skips w/the smallest of pot hole much worst than the 40`s cd player

Slow in city traffic for a 245hp car. Leaves you flatfooted

key fob left her stranded 2x, 15000 miles, within weeks problem w/receiver in car. The dealer would not refund money spent on new key fobs, even though they were purchased because of a failure of a warrantable item.

Car failed to start after a couple days of rain. dealer replaced alternator 17ish k miles

Car stalled on the Bronx river parkway during a rainstorm dealer replaced alternator as well as a few other things not sure wich though 18k miles

Last but not least transmission gave up 28k miles. Turns out that it is a very common occurrence for this car. Turns out that it wasn`t made to handle the 245hp of the 6 cyl.