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2003 Airtrek turbo help!

СообщениеДобавлено: 30 апр 2019, 04:39
Beedub-Trek
Recently purchased a Airtrek turbo. It's making a weird ticking noise around the Cambelt area. As far as I am aware the Cambelt was changed 30xxx ks ago. The ticking got louder when I did an oil change, I used 5w30 penrite full synthetic oil. Also when going forwards or in reverse the left front wheel hub is making a ticking sound (not a clunk or grinding sound just a tick) is it fair to say this is the c.v or would it be the wheel bearings.
I used my code scanner the other day and it says the p0172 bank 1, o2 sensor is also faulty, when I start the car it fluctuates between 12 & 4v (using live stream mode) as soon as I start to move the car with a bit of accelerator it instantly goes to 0. Has this o2 sensor failed or is it something else?
The Trek is completely standard, no engine mods or anything. :?

Thanks for the help

Re: 2003 Airtrek turbo help!

СообщениеДобавлено: 30 апр 2019, 06:24
C00LM4N
You'd better film it
Probably it's one of the lash adjusters
For O2 sensor check it's voltage graph. It should rapidly change between ~0V and ~1V, at least after revving up and releasing throttle. If it stands still then replace it.

Re: 2003 Airtrek turbo help!

СообщениеДобавлено: 01 май 2019, 05:34
Beedub-Trek
Thanks for the quick response, I will run up a short video of the sound. I thought initially it was the tensioners but I don't see any movement in the belt while it's idling.

Re: 2003 Airtrek turbo help!

СообщениеДобавлено: 08 май 2019, 13:43
georg1970
You should be able to read the fuel trims. If your O2 sensor is really dead fuel trims will be reading +12.5 percent most likely. If fuel trims are less than +12.5 percent, the chances are that 02 sensor is still OK. To double check it just check out the voltage changing as COOLMAN has advised in the post above.