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Originally Posted by slickroper
...would that cause the immediate bad gas symptoms ...
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No replacements before testing. I just listed possibilities...
O2: During warmup O2 sensor has no effect: In this 'open loop' cold condition, ECU adjusts injection based on TPS, MAF, rpm input. After warmup, only tranny TCU uses TPS, now O2 replaces TPS in engine ctrl input (closed loop).
If O2 sensors fail, engine uses TPS, you cannot feel difference. Mpg is worse.
ECU has selftest for O2, you may also use dmm in testing O2: pulsing up/down between 0-1V. Measure from nearest O2 connector or at ECU; pins listed in the manual. The self tst code should tell; code reliability is sometimes a ?
"bad gas symptoms"
Whatever that means... If its only when cold, points to TPS. Measure for TPS linear resistance, Voltage at ECU. Clic and seek and clic the given links
http://www.cardomain.com/id/pohjola#links. Check what u can do to TPS at
http://www.cardomain.com/ride/748507/6
KS: Typical KS-failure causes ign retard (not always). Ign retard causes always performance loss & mpg loss, 10% or more. Depends on variables...
Coilpacks die due to driven miles, one by one. CamPos signal has to be good for good performance. Check groundings, connectors, See pages 9,10,14 on the mentioned link.