Chevrolet Epica Engine Light Flashing With misfire detection PLEASE HELP ITS URGENT - Suzuki Forums: Suzuki Forum Site
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Old 07-01-2012, 12:33 AM   #1 (permalink)
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Unhappy Chevrolet Epica Engine Light Flashing With misfire detection PLEASE HELP ITS URGENT

Hello All,

I have an 04 Chevrolet Epica has 180,200km on it, a week ago the car was working just fine but the usual solid check engine light is on but recently the car started to have a rough idle but when i drive it smooths out as usual but today the car started with a very bad idle and white smoke coming out of the exhaust but after a second it is not smoking anymore so i drove the car but when i accelerate i feel it does not have power and when it shifted to second and third the check engine light start flashing and blinking and when i slow down to a full stop the check engine light stays solid but the car shakes and idle like a diesel truck, and when i turn the A/C the car freaks me out from how badly it is shaking and stalls between 1000rpm and 1500rpm and you can feel how rough its idling. i opened up the hood, didn't find anything unusual except the engine shaking, i am super worried because of all the horror stories i read about this problem. i checked the codes i have 2 codes P0304(misfire in cylinder 4) and P0138(o2 sensor bank 1 sensor 2 high voltage). i took off the plastic cover doch 24 valves looked at the wiring, there was nothing unusual, i checked the oil the dipstick had no oil on it at all so i added 4 liters of oil but now it is above the max mark which is weird because i know my car takes up to 7 liters and before i added any oil there was nothing on the dipstick. but the problem is still there before and after i added the oil(i am having a bad day with this car) also i looked at the coolant it was low so i added a universal one that had the same yellow ish color but after driving for a while i notice the color of the coolant is black, HELP ME. i am freaking out and please if anyone had the same or similar problem can direct me the right way to fix it because i already had past horrible experiences with the dealership with other problems the car have. i really want to cut my losses and know what it could be so i can tell the dealer instead of them changing parts that are not fixing the problem. i love my car and i want it to get back to the way it was, i already put a lot into it because i always do regular maintenance. i do not believe this is a result of me being careless in anyway. if any additional info is required please let me know and i will get back to you as soon as possible. yeah i already made an appointment for Wednesday to get the car checked and hopefully fixed but i would really appreciate your input so i have an idea, i am also hoping it is nothing major because i cannot afford losing this car since it is my primary and only transportation i have in my area.
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Old 07-04-2012, 07:23 PM   #2 (permalink)
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ok so, your o2 sensor code was the culprit of your constant check engine light. They aren't that expensive or hard to get to. You just lost your head gasket if the coolant is turning black, along with that nice white puff of smoke at start-up, which is coolant leaking into the cylinder. Just expect that it's expensive to fix and to start looking for another car.

Last edited by JustMechanic; 07-04-2012 at 07:26 PM. Reason: Correction
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Old 07-22-2012, 02:09 AM   #3 (permalink)
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Hey thanks for your input but the car died before i get to do anything on it due to oil vapor in an extreme way that all the 7 liters went away in less than an hr, info based on an experiences mechanic, but finally i realized these epicas, veronas, magnuses arent supposed to run on the road, they should go from the factory to the crusher.
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