DE-WINTERIZING your car

Joined
8 September 2005
Messages
787
Location
Atlanta, Georgia, United States
Thanks in advance , did a search and couldn't find anything I was looking for.

I have helped build a few engines in the past and when you first crank a new motor when the oil pump is not primed, I've been told to pull the battery fuse and turn the engine over several times before trying to cold start the engine

In a case where my NSX has been sitting for the past few months over winter, is there a particular fuse I should pull and let the motor turn over before putting it back and starting?

Anything else I should check besides oil and other fluids
Thanks again
 
If it makes you feel better, pulling fuse #13 will kill power to the ignition coils and prevent the main FI Relay from powering up the injector resistors so the engine will not start. Personally, I have never bothered with that.
 
Also you can disconnect the fuel injector resistor so you get no injector activity. That is on the passenger side engine bay, large silver unit. Easy to get to;)..... I do this when doing compression tests, it is easy access.

HTH,
LarryB
 
If you pull the fuel injector resistor pak, you do not need to pull any fuse, that is why I do it that way:)....
 
Fuse #13 is in the engine compartment (main ) fuse box. I recall that it might be a screw terminal fuse, so Larry's suggestion is probably less hassle.
 
Old guy, which one is the main
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There are 4
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Larry, I disconnected the resistor pack and to my dismay, the car still started.

Send a pic of what you disconnected, sounds like you disconnected something else, most likely the spark detection module, since yours is a 1995+.
 
I have attached a screen capture for the engine compartment fuse box from the 1991 service manual. The #13 fuse looks like it is the large pink colored screw in fuse that is at 90 degrees to the other four screw in fuses.

I agree with Larry B. that you must have pulled the connector on the misfire detection module, or something else. There is no way that the car could have started if the fuel injection resistors were disconnected. However, its done now so happy motoring for another summer. I will probably be fishing mine out of storage in a couple of days.

- - - Updated - - -

I was just looking at the wiring diagram for the main relay and the ECU. The #13 fuse powers up the main relay; however, the power for the injector resistors comes through the 20A fuse #18 , also in the engine compartment fuse box. Pulling fuse #18 will also kill the supply to the injector resistors. The advantage of using fuse #18 instead of #13 is that it is a normal AT blade style fuse which you can pop out with some needle nose pliers or your fingers if you don't have fat thumbs like me.
 
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