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#1
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Throttle position wrong
Hi
I have an 97 3.7q with the aew engine. When checking with vagcom I see that the motronic doesnt recognise that I have full throttle. I have adjusted the cable and checked that the throttle flap is fully open when I press. Have tried the ignition on, press throttle for 20sec etc and it doesnt work. Also tried the rosstech procedure but there is no label file for my engine so no luck. When I press full throttle vagcom says only 75% and recognise it as part throttle. Any suggestions? I have ordered a new tps but it seems unlikely that it work fine except for the last 25% |
#2
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Which sensors are you looking at?
There are pedal position sensors and throttle body sensors, not sure what your engine will have though. IIRC there are two readings on each with opposing scales and I'm not sure either gets to 100% anyway….
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! |
#3
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I belive my engine only have tps since there is a cable throttle not a drive by wire system. Anyhow the ecu should recognise full throttle so there is something wrong.
I gues I can try to measure the resistance between the plugs on idle and wot, but I cannot find any data for this for my engine. |
#4
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Have you done a Throttle Body Alignment? https://www.youtube.com/watch?v=2zrmhDw_v7Y
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.). 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! |
#5
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In group 98 there is nothing, only error.
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#6
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I looked in my manual, and it seems to be a correct reading (if I understand the manual)
Servicing accelerator linkage - vehicles with electronic throttle system (electronic power control) 5 Acceleration position sender -G79 RHD vehicles Requirement for test: Accelerator pedal stop installed (combined with kick down switch for vehicles with automatic gearbox) 01 - Engine electronics select diagnosis function “08 - Read data block” from the menu. enter “062” to select Display group 062 and confirm entry. Check display in display zone 3 (accelerator pedal position). Vehicles with automatic gearbox Press the accelerator all the way down (past kick down point) Specification: 70 … 74% (accelerator pedal pressed down past kick down point) Exit from function “08 - Read data block” Select diagnosis function “06 - End output”.
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Johannes _________ Audi S8 -99, Pearlescent, Alcantara/silk napa leather, Burr walnut insert, Alcantara roof lining upper pack A8 32V engine ----- Jeep Grand Cherokee -98 |
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