Can some one PLEASE answer me
Brand new motor because some one put shit in my thank but that not the problem my
check engine is on and staying on took it off and it came back on! I want to no if that light
will suck my gas?
That's all depends on the code for your check engine light it can be many things that won't efect your gas mileage and some that will need to get code checked
Very likely to drop your fuel mileage because the computer can go into FMEM (Failure Mode Effects Management) and set parameters that are more likely to preserve your engine rather than optimize it's performance. Get the DTC's (codes) and we'll see what can be done.
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