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Your best bet... Posted by B Millar [Email] ![]() ![]() ![]() In Reply to: Running/Idle rough, CEL on as well, Stephen, Thu, 29 Oct 2009 08:56:19 Members do not see ads below this line. - Help Keep This Site Online - Signup |
...is going to be to being it to an AutoZone or Advance Auto Parts and have the CEL code(s) read for free. There are tons of problems that could cause what you're describing and having the codes will narrow it down considerably.
If the CEL is flashing, DON'T drive it! A flashing CEL means you're getting catalyst-damaging misfires and that causes $$$ repairs. It would be worth the money to have the car towed if the CEL is flashing to prevent other part-replacement costs.
I am guessing you've either got a DI cassette flaking out, or you've got a big vacuum leak. Inspect all the rubber vacuum hoses that run from the throttle body, etc. If they haven't already been replaced, you should replace them all anyway. You would need about 8 feet of 5/32" or 4mm (same thing) vacuum hose. You can order silicone stuff but it might be easier to jet get some rubber stuff at Autozone for <$1.00 per foot. I just did this to my 2004 with 43k miles on it and the hoses just crumbled as I pulled them off. The rubber doesn't age well with the heat under the hood. Also check the intake tubes for rips or tears, and all the connections where the hose clamps hold them on. (Throttle body, intercooler, etc... Good luck and keep us posted please!
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