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Could it be my RAP module?

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Could it be my RAP module?

  #1  
Old 06-09-2018, 12:26 PM
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Join Date: Jun 2018
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Could it be my RAP module?

My 1997 F150 Lariat Extended cab won't start immediately. I turn the switch and my door locks cycle. I hit the switch again and hold the door lock button and it MAY start that time. I'm also noticing a pattern. I turn the key 5 times then the locks cycle. I keep turning the key and the locks now cycle at the 4th turn. then after 3 more turns the locks cycle then it FINALLY started. What is causing this? By the way it started this odd behavior shortly after I got a remote start installed a few years back but it was so intermittent I wasn't too concerned. but it got worse and I had the remote start removed and my problems didn't go away with the remote start. One more thing. Very recently I was able to hold down the unlock button and turn the switch and it would start. That went on for a few months because the dealer was dumbfounded and had no true solution.
 

Last edited by iluvwhtchix; 06-09-2018 at 02:35 PM. Reason: additional info
  #2  
Old 06-09-2018, 06:42 PM
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Location: St. Louis (Out in the woods)
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The RAP module has nothing to do with the engine starting or running.

Other than doing a voodoo dance with the door switches, have you done any actual troubleshooting? The starter circuit is pretty simple.
 
  #3  
Old 06-09-2018, 10:44 PM
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Tested and jumpered the starter interrupt relay, There's a new starter/solenoid relay under the hood.
 
  #4  
Old 06-10-2018, 06:05 AM
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Tested and jumpered the starter interrupt relay,
A 97 F150 didn't leave the factory with a "starter interrupt relay".

There's a new starter/solenoid relay under the hood.
That's not troubleshooting, that's guessing.
 
  #5  
Old 06-12-2018, 08:49 PM
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Originally Posted by projectSHO89 View Post
A 97 F150 didn't leave the factory with a "starter interrupt relay".
Yes it is. Under my dash cover.
 
  #6  
Old 06-12-2018, 09:04 PM
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Join Date: Oct 2002
Location: St. Louis (Out in the woods)
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Originally Posted by iluvwhtchix View Post



Yes it is. Under my dash cover.
Heh! Must have been an option. My old 97 F150 that I drove for almost 10 years didn't have that feature.
 

Last edited by projectSHO89; 06-12-2018 at 09:06 PM.


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