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The Chevrolet Cruze is a compact car made by the Chevrolet division of General Motors. The Cruze was first released in 2008 with a front-engine, front-wheel-drive layout.

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Engine light is flashing & tcu

My 2012 chevrolet cruze 1.8 LT started misfiring this morning engine light & tcu is flashing I don't know what's wrong any advice.?

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I've just changed the plugs still the problem persist maybe it's the pcv valve or the air filter?

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@lane29.p It is not likely to be either of those. You're air filter can be very filthy and it should still run and not misfire.

The computer read outs are key here. If you can get it to a local parts store that does free readings, I would do so before wasting any more time or money.

A misfire can mean a lot of things. Knowing which cylinder or if there are multiple failing is critical. It could be as simple as replacing a spark plug coil or mass air flow sensor. I would not advise purchasing parts until you have an idea of what diagnostic codes are stored in the computer.

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Thanks will do, update later

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Park it or drive it very slow to a mechanic until the issue is resolved.

Engine light flashing means catastrophic engine failure could occur soon. One or more cylinders is not firing which creates a severe imbalance in the engine as well as unspent fuel being sent through the exhaust which can then cause excessive heat and irreversible damage to the catalytic converter(s).

Always start a misfire or no start/fire condition with checking your air, fuel, and spark. Doesn’t hurt to check fuses and relays as well. I would then move on to using a check engine DTC reader or take it to an Advance Auto Parts store where they can read the codes and give you the description of each code. Actually reading the engine codes can be the first step if you have access to the tool but keep in mind this information only identifies an issue registered by the computer and does not mean the part identified is bad or should be replaced. Further troubleshooting steps are required to verify.

If only one cylinder is misfiring, first clear the current DTCs, then try moving the coil pack from the problem cylinder to another. Run the vehicle, you may have to drive it a little, until the check engine light returns. Read the code, if it is the same cylinder, then examine the ignition wire and spark plug for that cylinder. If all looks good, then swap the spark plug to another cylinder, test, followed by swapping the ignition wire if applicable, and test again. If the engine code changes cylinders after one of these swaps, you can identify your bad part.

If you have a multiple misfire condition, then I would be checking fuses/relays, testing the fuel pressure, camshaft position sensor(s), followed by the crankshaft position sensor. The fuel pump can be tested by using a fuel pressure gauge or have a qualified professional handle this and compare readings with the OEM specs. This step is also dependent on your ability to use a multi-meter and compare your readings with the expected values of the repair manual for your specific vehicle.

Please let me know if this helps or if you have any questions.

Thank you,

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Valva taped noise

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Drive it slowly to an AutoZone or other auto store that do free computer read outs. They do this free in the hopes that you will get the needed parts from them.

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Ok I have a Chevy Cruze LT 2011 and the fan want turn off what can I do to fix it

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Check the oil level, had an issue with it earlier tonight. My oil level was low. My engine light was on and blinking, pulled the dip stick, added oil, perfectly fine since.

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Sparkplugs and coils replaced car runs fine now also check engine light is off too

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What if the rpm go up and down at a stop light and also when give gas has rough time speeding up.

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lane29.p zal eeuwig dankbaar zijn.
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