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What is the year make model and engine of it please?
I see, thanks. Do you know if there are any trouble codes stored?
I see, thanks. Are you able to keep it running with a little acceleration while in reverse? Normally the TCC won't lock the converter when the vehicle isn't driving in a forward gear.
I see that you had cleaned the IAC valve, do you know if it is moving when the PCM commands it to? (when put in reverse). Possible that it is not moving or not moving fast enough.
I see, thanks. That would fall under the "starts and then stalls" in the diagnostics. Which would be testing of various sensor readings and sometimes fuel systems. Hard to pinpoint a problem like that without testing.
If you accept my additional service request for your email address, you can give me your email in a private info box and I'll send you the test instructions in a PDF file, the file is rather large.
You will just have to accept the additional service offer and ENTER your email address in the “ENTER CONTACT INFO” section so that I can see it, Thanks