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Author Topic: Throttle Position Sensor problem.  (Read 1699 times)

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speedy_ns

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Throttle Position Sensor problem.
« on: 12 August 2011, 10:01:43 »
Can someone help me?? My Omega started to run verry bad, I read fault codes and I got these :
P0120-Throttle Position Sensor (TPS) Circuit 1 Voltage Low
P1120 - Accelerator Pedal Position Sensor 1 Low Input
P1550 - Electronic Throttle Control Reduced Power
Where should I start from? Does this mean? Faulty sensors?
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Abiton

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Re: Throttle Position Sensor problem.
« Reply #1 on: 12 August 2011, 10:58:59 »
Which engine are you reading these codes from, and how are you reading them?

If it's the 2.0 16v in your profile, you will be able to use the Paperclip Test (see Maintenance Guide Index).

Codes 1120 and 1550 cannot apply to a 2.0 as it has a mechanical throttle control, not an electronic one.

Are you sure you don't have a 2.2 engine?
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speedy_ns

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Re: Throttle Position Sensor problem.
« Reply #2 on: 12 August 2011, 12:18:00 »
Yes, I've got x20xev engine instaled instead of z22xe, but instalation, computer, sensors, electronic throttle and everything else is from original 2.2. Previous owner put this engine in, but I didn't know that when I was buying a car. I read these codes with "My Naff Code Reader", and car is running werry bad. It idle's at 1200, 1300rpm than drops to 600, and sometimes it holds throttle on 1500rpm for 5 10 seconds after i left my foot of the pedal.
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Abiton

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Re: Throttle Position Sensor problem.
« Reply #3 on: 12 August 2011, 18:01:00 »
One for the 2.2 experts then.

Throttle-body and breathers cleaning is all I can suggest.  Not sure what, if any, conclusions can be drawn about the drive-by-wire stuff with those fault codes.  Check connectors are clean and fully locked in at pedal and throttle body, I guess.
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Marks DTM Calib

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Re: Throttle Position Sensor problem.
« Reply #4 on: 12 August 2011, 19:44:06 »
I have seen a faulty MAF cause an issue like this on a 2.2 as well, live data would reveal all
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speedy_ns

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Re: Throttle Position Sensor problem.
« Reply #5 on: 12 August 2011, 23:41:23 »
Today i noticed that cruise control isn't working. Is there any picture of this  throttle sensor, cause I'm not sure were too look??
« Last Edit: 12 August 2011, 23:42:11 by speedy__ns »
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speedy_ns

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Re: Throttle Position Sensor problem.
« Reply #6 on: 18 August 2011, 18:52:00 »
You wan't believe it! Camshaft sensor produced all the problems. And my stupidity. :-[ I had one disconected wire that goes from cam sesnor. I replaced cam sensor with used one, and then discovered that wire. I reconected it and nothing happened. Today i return old cam sensor and all problems disappear. Faulty sensor made all the mess with that fault codes, but now car runs fine. Sory for bothering you for nothing.
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