Jun 202016
 

1997 Jeep WranglerIt starts and idles great. When I try to drive it, it stalls and cuts out. Then it takes a min to start back up. Recent Mopar brain replacement. Thinking TPS or Fuel Pump. Ideas?


RESPONSE

I’m thinking fuel pump or MAP – Manifold Absolute Pressure Sensor. You can check you codes if any. Most times when a MAP sensor is faulty it will not set a code. It will be stuck and send the same signal that is within the allotted parameters. You can check the fuel pressure with a fuel pressure gauge. See if the fuel pressure drops when you try to accelerate. Good pressure at idle and bad on acceleration would indicate a faulty fuel pressure regulator. Of course bad fuel pressure at idle would indicate a clogged fuel filter or faulty fuel pump.

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