My 1993 Lexus ES 300 when put in drive will rev up the RPM and then almost cut off or if feels like the transmisson is about to jump into another gear. And also when you come to a stop and take off it will hesitate then go when you mash on the gas. It also had a code 12.
One mechanic said I needed an external ignition coil.
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Re: My 93 Lexus ES 300 has miss while idling.
The ignition coil is very easy to replace it would be located on the side of the car chasis next to the engine and would have one cable coming from it with a couple of wires leading to it that would affect the acceleration to a certain degree
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check the basic, from fuse and relay engine cooling . have the fan check making sure the fans motor is good, does the fans come on at all when the engine has been running for while, if not it can be the switch, i would go ahead and replace them both thermostats and thermostats switch if you haven't done it. Thermostat switch has to be good, which it turn on and off the cooling fan. Thermostat (work like a valve) has to also operate properly other wise the fluid will continue to flow hot or not flow at all. thermostats will cost 7-8 bucks and the switch cost 47-50 bucks.
The only way to check why the check engine light is on is to have autozone or a mechanic put a scanner on the car and read the engine codes. This will tell you exactly what is wrong. Many part stores will test it for free. Mechanics will charge about $40 But you will definately know exactly what the problem is.
If gauge is fine and car smells hot. It is probably due to plugged exhaust unless you have a wire laying on the exhaust manifold and it's melting.