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Old 11-08-2015, 10:45 PM
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Join Date: Nov 2015
Posts: 1
Jeep only runs with brake pressed????

My brothers 1998 Wrangler Sahara will only turn over and run if he holds the brake in. He wasn't sure what the problem was at first because it was just missfiring so he checked all fuel components and they are fine, checked IAC valve, MAF sensor, MAP sensor, TPS, crankshaft position sensor, everything in that area is good/or been replaced. He replaced the nss switch, and some how found that it would turn over and run fine if he held in the brake, so he got a new brake switch, still didn't help, so he just left the switch unplugged and everything seemed to be fine for a while but now it won't start at all. He left it at my house for me to look at any suggestions on what the problem might be will be highly appreciated because i'm drawing blanks. (and no the battery isn't dead and the alternator is fine)

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Old 11-09-2015, 05:32 PM   #2
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Join Date: Aug 2012
Location: Upstate SC
Posts: 110
It's not fun or easy, but I would suggest getting a wiring diagram for your model and year. Then use it to look for bad grounds.
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