LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

UCF10 Sputtering/surging & low power

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Old 03-27-13, 12:28 PM
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cheesey1x
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Default UCF10 Sputtering/surging & low power

All,

So I had a no start issues and in my troubles I replaced in this order
Fuel Filter (no help)
Fuel Pump (no help)
ECU (car started after this)


Since the ECU replacement, the car has a little sputter and is surging at idle. The idle does not jump but is jerky when you slow down to stop.

Additionally, there is an intermittent loss of power. Sometimes I have to floor it to get moving and other times it works like normal. On the instances where there is no power, the engine is slightly jerky/surgy
Old 03-27-13, 05:22 PM
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LScowboyLS
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Engine Coolant Temperature Sensor
clean MAF with compressed air and/or chamois cloth
clean throttle body
fix capacitors in ECU

Last edited by LScowboyLS; 03-29-13 at 02:42 PM.
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