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I am going to move your question out of the Toyota category and open it up to other experts .
I am not aware of any Acura 3.5 rl models if this is not corect please repost the correct model so an expert can help you.
Also you will NOT get a P0505 code in a 1988 acura
I cannot answer your question with the info provided,
P0505 code is an OBD2 code your car must be at least a 1996 or newer for it to have this code NOT A 1988!!
Hi, here is the pinpoint test for the code to help find the root cause, thanks
Hi, here is a list of locations, thanks
Hi, below is the information, thanks
Turn the ignition switch OFF . Remove the CLOCK RADIO (7.5 A) fuse from the under-hood fuse/relay box for 10 seconds. NOTE: If the BACK UP RADIO (7.5 A) fuse is removed and the ignition switch ON (II), MIL will report on and PCM will store the DTC P0560.
Hi, here is the information, thanks