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YJ designer 01-03-2011 01:25 PM

YJ crank position sensor
Have '91 YJ, building for 2 yrs. and drive most days. Other day it turned over but won't start. Distributor cap, rotor and wires are new. I tested coil and it was fine. Mechanic tested and replaced crankshaft position sensor, but now it won't start unless gas pedal is pushed to floor board. Never in 2 yrs have I touched the gas pedal when starting the jeep. Why now is this required for it to start? I thought fuel injected engines, you should never touch the gas pedal and now I have too. :banghead:

Timberwolf 01-03-2011 01:29 PM

fuel filter or pump?

YJ designer 01-03-2011 01:32 PM

Thanks.. will check them.

birtydugger 01-03-2011 01:49 PM

TPS...Throttle Position Sensor...try changing that...its on the back end of the throttle-body (carb) facing the has a conector plugged into it..pull it out and undo the 2 torx screws..put new one in... Position Sensor for 91-95 Jeep® Wrangler YJ

YJ designer 01-03-2011 01:51 PM

It is fuel injected.. does it still have TPS?

MetsFan978 01-03-2011 02:15 PM


Originally Posted by YJ designer (Post 962340)
It is fuel injected.. does it still have TPS?

Yea, you have a TPS. Think it's a requirement on any gasoline engine.
As posted earlier, it will be screwed into the throttle body on the driver's side facing the firewall. There's a 3 wire plug that goes into it.
If you have a multimeter you could test yours, but they aren't expensive to replace and they can go bad.

birtydugger 01-03-2011 03:02 PM

Yeah u got one...they do go bad especially if water penetrates it!..dont jet-wash ur engines or go fast through rivers they hate it!!!

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