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Old Oct 18, 2007 | 07:37 AM
  #1  
ripcurl94's Avatar
ripcurl94
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random not start

This happened to me last night and this is second time that its happened this month. I crank my explorer and i get a strong crank, but it will not start. So i unplugged the interia switch, took the negative port off the battery, then plugged the switch back in .. hit the reset button above the switch and put the battery port back on.. and she started.. so i know that there is either something with the switch or fuel pump .. is that accurate.. and how should i check??


98 xlt
122k
 
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Old Oct 18, 2007 | 07:53 AM
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Or even the fuel pump relay. Over time relays can become intermittent. Happened on my '94. The relay eventually failed all together.
 
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Old Oct 18, 2007 | 08:04 AM
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ripcurl94
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ahh .. good thinking.. so how expensive is the relay?? i don't think i have ever bought one ..
 
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Old Oct 18, 2007 | 08:04 AM
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rock auto has it for 8.06 not to bad!
 
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Old Oct 18, 2007 | 09:30 AM
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That may not be your problem though, just a possibility.
 
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Old Oct 18, 2007 | 09:50 AM
  #6  
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Quick check, There are 3-4 identical relays in the main distribution box, just rotate them into different sockets, if the trouble goes away it is most likely a relay for the fuel or the PCM.

If you do this do not touch anything else, so you can narrow down the problem.
 
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Old Oct 18, 2007 | 10:49 AM
  #7  
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Thats a good idea .. any ideas on which replay i should switch it with.. one that is not to important.
 
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Old Oct 18, 2007 | 11:13 AM
  #8  
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Move them all clockwise, like musical chairs, the bad one will then affect the next socket..(or maybe not, if it uses a different set of contacts inside)
 
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Old Oct 18, 2007 | 11:23 AM
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The cover on the relay box should tell you which relay is for what.
 
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Old Oct 19, 2007 | 04:59 AM
  #10  
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This link should help: http://www.autozone.com/az/cds/en_us...rInfoPages.htm .Scroll down to correct diagram. Keep in mind that the PCM and FP relays need to work for it to start. I suggest you switch the FP relay with the throttle relay and test. If no start reverse what you did, and then switch the PCM and throttle relays.
 
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Old Mar 7, 2008 | 09:34 AM
  #11  
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I use the A/C relay as I no longer have cold in the 94. Solved the problem. A real difficult intermittent problem to fix.

pitney
 
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