Exhaust leak? Flex pipe?
#1
Exhaust leak? Flex pipe?
My 01 S40 has started to have a low end rumble ever since the temps have gotten cold. It can be heard at idle when first started, then can be heard when accelerating (around 1k-2k rpms) until the car is fully warmed up. Haven't had a chance to get it on the lift to inspect it, just wanted to see if others have had a problem around 90k miles. It feels like it is coming from where the flex pipe is located.
#2
yes its common for the flex pipe to fail on the Gen1 S40s. You can find replacement flex pipes to splice in ahead of the cat on Ebay for about $70 or you can opt to replace the whole cat with flexpipe for about $275 for the part (aftermarket Bosal - assuming you're not in CA). Note if you replace the cat, you will likely also want or need to replace the O2 sensors so that'll add another $200 for both.
#3
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