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Automotive Advice

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I have a 1998 Chevy Malibu in good condition except for the engine needs rebuilt or replaced. How much should I ask for it since it needs an engine? Thank you.
The check engine light on my car came on about a week ago. When I got it checked out, the message said "Catalyst System Efficiency Below Threshold." I would like to get a full diagnostic run so I can figure out exactly what is wrong with my car. How much is it to get a full diagnostic run on my car?
The car is pulling a p0113 code, the AIT sensor was replaced, reset, but soon after being replaced the check engine light came back on, took it back, checked wires for fraying, damage, and it is still showing the same code what else can be done to resolve this problem?
Hello I have a 1993 Mazda 626Lx with 165,000 miles.It has a 2.0L engine and automatic transmission.When the engine warms up and I am at a stoplight the engine will speed up and go down,at times it feels like the engine is cutting out.Do you have any advice for this. Sputters
CHECK ENGINE LIGHT.. I have recently replaced my alternator, a new battery, and a rebuilt dashboard cluster. I had a diagnostic which read my engine to be operating well. The mechanic was not the best, as He mixed up the fuses under the dashboard. I get the annoying check engine light now, and It never came on before the repairs. The lights ...
Hi Patty- I had accidentally driven about 2 miles (slow speed) with the parking brake on. Then I noticed the Check Engine light came on. I checked the manual, gas cap is not loose, fuel is not low, it says to drive about 40 trips (now about 5 trips) and it is still on. 1. Would my mistake with the parking brake cause that to go on? 2. "trip" is about ...
My car has 55,000 miles on it and the engine is running a little louder than it has in the past, and from time to time it will vibrate a little when idling. Are these indicators that it needs a tune up or that there is a problem? If I take it in to get a tune up, what things should I expect them to do? How much do tune up

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