do I need a tune up?
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do I need a tune up?
Hey guys. My 01 SE has 130k on it and lately I have been noticing that I feel a hesitation when I am accellerating slowly like driving up a hill. Sometimes when I'm sitting still I feel it ideling rough. The other day I was driving on a steep hill on the highway and when I punched it the service engine soon light started blinking then it went off when I cleared the hill. Today I was driving and the light started blinking again and it was running like crap again. I also noticed a hot rotten egg smell in the passenger compartment. Does this sound like I am due for a tune up? I'm worried the smell is a clogged converter. What do you guys think? If I do need a tune up, what all does it consist of? Is there a tech info write up on how to do it? Thanks in advance
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the rotten egg smell is usually the converter, the engine light flashing and the cars reaction as you described sounds like mine when my #4 injector went out. if the light is still on could you get us the codes that it is showing to better determine the issue? thanks
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Change your plugs and wires and possibly the coils. You have a weak spark, that'* why you lack power and it'* running rough. The blinking SES light is a misfire, caused by bad spark. The rotten egg smell is unburnt gas getting in to the cat, this is caused by bad spark. Change out what I suggested and you should be fine. Also clean the MAF.
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what brand plugs wires and coils do you guys suggest? around how much will it cost?
Last edited by black_friday; 05-17-2010 at 03:05 PM. Reason: added to the question
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They can be a pain, not as much room back there as earlier models. But still better then on a Wbody car. Stock coils are fine. Again, no gain with after market coils. In fact, some arn't even as good as stock.
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I've heard that Bosch plugs don't run anywhere near as well on GM'* as other brands do. I've actually been told by several mechanics to stay away from them. A buddy of mine tried them, and 2 days later took them back to replace them with a different brand.