Jeep 4.0 Vacuum At Idle at James Schlesinger blog

Jeep 4.0 Vacuum At Idle. I was under the impression it should. Cleared the trims from ecu memory, no change. To do this the pcm monitors the. I'm looking for the approximately correct vacuum pressure at idle and at speed (~65mph). You find it by hooking up your vacuum gauge, adjusting the fuel. The surging is likely the pcm trying to maintain the idle af ratio of 14.7 as factory programmed. It does not misfire every time at idle. My 4.0 auto is idling high and very erratically while in park, but in drive the idle sits normally. I'm gonna check for vacuum leaks, header/intake gasket leaks, clean mas, clean throttle body and idle position sensor. The vacuum is created in the manifold, so it should stay consistent unless you have a leak that develops at temperature I increased my idle vacuum by setting the best lean idle. I would say that 15 should be ok at idle,. Once again the only thing that improves performance at idle is a much higher octane fuel.

Once again the only thing that improves performance at idle is a much higher octane fuel. You find it by hooking up your vacuum gauge, adjusting the fuel. I'm gonna check for vacuum leaks, header/intake gasket leaks, clean mas, clean throttle body and idle position sensor. I was under the impression it should. It does not misfire every time at idle. To do this the pcm monitors the. Cleared the trims from ecu memory, no change. The surging is likely the pcm trying to maintain the idle af ratio of 14.7 as factory programmed. I would say that 15 should be ok at idle,. I increased my idle vacuum by setting the best lean idle.

Jeep 4.0 High Idle Problem Jeep Car Info

Jeep 4.0 Vacuum At Idle I increased my idle vacuum by setting the best lean idle. My 4.0 auto is idling high and very erratically while in park, but in drive the idle sits normally. You find it by hooking up your vacuum gauge, adjusting the fuel. It does not misfire every time at idle. To do this the pcm monitors the. The vacuum is created in the manifold, so it should stay consistent unless you have a leak that develops at temperature I'm gonna check for vacuum leaks, header/intake gasket leaks, clean mas, clean throttle body and idle position sensor. Once again the only thing that improves performance at idle is a much higher octane fuel. Cleared the trims from ecu memory, no change. The surging is likely the pcm trying to maintain the idle af ratio of 14.7 as factory programmed. I would say that 15 should be ok at idle,. I was under the impression it should. I'm looking for the approximately correct vacuum pressure at idle and at speed (~65mph). I increased my idle vacuum by setting the best lean idle.

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