Dakota 5.2
Legend
Joined: Feb 2005
Posts: 8,058
Likes: 184
From: Fort Worth, TX
What's the MAP sensor and TPS reading do as you crack the throttle open?
If it only stumbles/dies on acceleration, tells me it's getting a bad A/F ratio. Does it smell like fuel when it happens?
If it only stumbles/dies on acceleration, tells me it's getting a bad A/F ratio. Does it smell like fuel when it happens?
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Amateur
Joined: Jun 2020
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dies at 3k and smells like it’s running rich
Legend
Joined: Feb 2005
Posts: 8,058
Likes: 184
From: Fort Worth, TX
Only while driving, or also while in park/neutral?
That tells me the TPS voltage or MAP reading are off, and it's going rich (premature open loop). Slim chance you could have an injector hanging open at long pulse lengths.
That tells me the TPS voltage or MAP reading are off, and it's going rich (premature open loop). Slim chance you could have an injector hanging open at long pulse lengths.
Legend
Joined: Feb 2005
Posts: 8,058
Likes: 184
From: Fort Worth, TX
Stock size injectors? Are you sure you didn't go one size too big? I think stock is 23 pound per hour. Would have to see your LTFT and STFT numbers on a logger/analyzer, but it shouldn't smell rich at all times, the oxygen sensors should be dialing back the fuel injector pulse unless it exceeds the 10% tolerance.
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Amateur
Joined: Jun 2020
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Stock size injectors? Are you sure you didn't go one size too big? I think stock is 23 pound per hour. Would have to see your LTFT and STFT numbers on a logger/analyzer, but it shouldn't smell rich at all times, the oxygen sensors should be dialing back the fuel injector pulse unless it exceeds the 10% tolerance.
i replaced TPS, map sensor , and IAC Valve drove about 1.5 miles stopped running & won’t start back
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Amateur
Joined: Jun 2020
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HeyYou
spark into coil not out. Eplaced coil, crank sensor, pickup coil, 50lbs fuel pressure idling and running. New TPS, map sensor, IAC valve
