Diagnosis: Need to replace expansion valve. Part value at NAPA $42. Quoted repair $700. Where can I find instructions on how to replace the AC Expansion valve. It can't be $650 difficult.
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Yes, it is possible for the ECU to be bad even if it is still providing codes to the OBD2 scanner. The ECU is a complex electronic device and it is possible for one or more of its internal components to fail without affecting its ability to communicate with the OBD2 scanner.
In your case, the fact that the codes went away after replacing the #35 fuse and the IAC motor suggests that those were the underlying problems causing the "crank but no start" condition. However, the fact that the car still won't start after those repairs indicates that there is another problem, and it is possible that the ECU is at fault.
To be sure, you would need to take the car to a qualified mechanic and have them perform a more thorough diagnosis. The mechanic may be able to test the ECU to see if it is functioning properly. If the ECU is found to be bad, it will need to be replaced.
Here are some other possible causes of the "crank but no start" condition in your Lexus IS300:
Faulty fuel pump
Faulty spark plugs
Faulty ignition coil
Faulty camshaft or crankshaft sensor
Low compression in one or more cylinders
Clogged fuel filter
Restriction in the air intake system
If the mechanic is unable to find any other problems, then the ECU may indeed be the culprit. However, it is important to rule out all other possibilities before replacing the ECU, as it can be a costly repair.
I recently had my engine replaced in my 2002 grand marquis 4.6 with a 2009 crown Vic 5.4 engine and was running fine until I broke my ignition and tried to replace it myself I bought a new ignition switch didn't work so I bought a steering column and still won't start what do I do
no it will not fail but i suspect that you only need a recharge of gas as with two AC units you should have about 1.2 kilos of gas in this system and i think you only have about half that ?? could be wrong mind but i do think your being taken here to make up the wage bill for the month
To my knowlegde there is a relay a high and low pressure switch an expansion valve a compressor evaporator and condensor in an a/c system. I have'nt heard of the evp valve. if you talking about the expansion valve it starts out for about $2.00 at the parts store. try another mechanic
I think you should buy repair manual first for your vehicle after that you can easily repair your car by yourself. Check the link may be you will get something useful here 2002 Lexus IS300 Service Repair Manual Download
the unit locks shut when disc is installed. there is a tab on the front that you must slide to open position, when you do this disc will eject. when you install new one you must slide tab back to lock position
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