05 night train efi map sensor circuit
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Intermediate
Joined: May 2022
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From: Pennsylvania
05 night train efi map sensor circuit
I have an 05 night train, started running rough, like loss of fuel or spark, but got it home, had code p0107, changed map sensor with new one from dealer, started right up, drove around town for about 1/2 hour, seemed fine, went on a short 35 mile ride, stopped for a drink, when I came back out it will start but cant rev, just sputters and dies, had to have it rollbacked home, has same code😞
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From: Honah Lee
Has Throttle body been off to cause a vacuum leak. Wiggle test wiring.
Sorry about order. On a phone, limited wifi, with numerous memory errors. Note order is backwards and the schematic is a flyer.
Last edited by Jackie Paper; May 24, 2022 at 05:26 PM.
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Intermediate
Joined: May 2022
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From: Pennsylvania
Got new intake seals when I picked up the new map sensor, just changed the sensor and checked for leaking seal when I started it( sprayed around intake seal area with starting fluid, no change in idle), did the wire wiggle when it wouldn’t go before I called the rollback, didn’t do anything, the pictures you sent gives me a great starting point, looks like it’s time to get out the electrical tester🙄
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,300
Likes: 6,325
From: Honah Lee
Got new intake seals when I picked up the new map sensor, just changed the sensor and checked for leaking seal when I started it( sprayed around intake seal area with starting fluid, no change in idle), did the wire wiggle when it wouldnt go before I called the rollback, didnt do anything, the pictures you sent gives me a great starting point, looks like its time to get out the electrical tester🙄
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Intermediate
Joined: May 2022
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From: Pennsylvania
Ok, so I tested map sensor plug and only got 3.9-4.0 volts, but just noticed that when I turn dash ignition switch on, turn signals flash intermittently from side to side, I don’t recall this happening before?
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Intermediate
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From: Pennsylvania
I checked continuity of all 3 wires on map sensor plug for ground, both with ignition on and off, found no ground continuity?
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Seasoned HDF Member
Joined: Mar 2010
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From: Honah Lee
I personally have never had to deal with one. Know just spraying throttle body cleaner will hose up the MAP, the temperature sensor, IAC motor and the TPS. It washes the black crud up in them.
Only clean butterfly and area around it with cleaner on a cotton cloth.
Last edited by Jackie Paper; May 25, 2022 at 06:59 PM.
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Thread Starter
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Intermediate
Joined: May 2022
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From: Pennsylvania
No bulbs out, but I think the security system was tripped when it was rollbacked home, because now it won’t even turn over, tried using key fob button, didn’t make a difference, even disconnected the battery for 10 minutes, re connected it same issue, turn signals flash side to side and no crank 🤬
"open" = check for broken wire, bent pin, or spread socket connector if you have already replaced the sensor.
Last edited by Ed Ramberger; May 25, 2022 at 07:25 PM.