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This model have 2 ignition coils, over the upper center front of engine below black plastic cap , and other on left side of engine over the air conditioner compressor.
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The fuel pump pumps the fuel from the fuel tank under pressure up to the fuel rail and injectors.
The coil packs provide a electrical charge (about 40,000 volts) to the spark plugs. It is this charge that makes the spark plug spark.
Yeah, it's time for the timing belt. The crank and the cams sensors have to be on the the exact timing marks. When the belt gets old and start to stretch, it will pop the code. If you do it yourself, get a manual for it and follow it to a "T"
The ignition coils are built on the spark plug boot. You have to take the plastic cover off thats on the valve covers. The cover usually says V8 four cam on it.
fuel pump presure needs checked as does the fuel filter. injectors fail commonly and theie easy to test with a scanner just turn them on and off one at a time
On my 93 lexus ls 400, the heater control valve is gone and was bypassed. It mounts to the firewall under the hood. if it needs to be replaced your car will blow only heat
the track off light will come everytime yhe check engine light comes on. this is normal. you need to have the check engine light checked first.you can go to your local parts house they will scan it for so you at least see what area you problem is in and then you can start from there. let me know lf you find out youe engine codes.
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