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Old 11-09-2004, 01:32 PM   #21
playboyroy
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Default Re: Service Engine Soon - P0171 & P0174 HELP?

Here is what I would do. Since you most likely have to pay for the diagnostic charge of having tech look at your vehicle. Have them update your ECM calibration if needed. Most shop don't charge you the diagnostic charge if you get some work done. I would try to ***** for them to do it for free. New calibrations are common to improve performance and issues. It's like new updates for windows on your home computer.

Buy the parts yourself and install them. If you changed your air filter before, you have removed and installed your MAF sensor. As for throttle body, if you don't feel comfortable doing, if someone to do it for you. It's simple to do in your driveway. Some here could give you the procedure if needed.

As for the codes, once the ECM notices the issue has been fixed it will turn off the engine light. After many ignition cycles, it will erase the code. Or you could slip the Autozone person a couple of bucks to erase them. Cash is king.

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Old 11-09-2004, 02:07 PM   #22
filter905
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Default Re: Service Engine Soon - P0171 & P0174 HELP?

Anyone know how to change the Throttle Body? At least a step-by step instruction on how to do it. I've got a mechanic in mind that can help me change it. THE MAF I can do myself, I'll drive to any place that has a ECM Diagnostic Machine so they can upgrade the computer. I'll take the chance...do it myself in changing the parts.

Thanks Folks...

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Old 04-27-2005, 10:21 PM   #23
beensmoked
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2001 L-Series 3.0L Sedan
2002 L-Series 2.2L Sedan
Default Re: Service Engine Soon - P0171 & P0174 HELP?

Quote:
Originally Posted by lostwages_ls2
P1511 is a throttle body code. Could be weak return spring. Bad sensor. Or butterfly is binding.

The book standard labor to replace the throttle body is .9 hours. You are being overcharged by .5 hours for that. $360 for the part is about right.

Any garage with the right equipment to "recalibrate" the ECM can do it.

Actually if you are mildly mechanically inclined, you could probably replace the parts, then drive it to the dealer for recalibration. It may not drive perfectly, but it should get there.
alrite i know this is an old thread..but i just recently replaced my MAF sensor...do i need to get my car recalibrated?

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Old 04-27-2005, 11:16 PM   #24
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Default Re: Service Engine Soon - P0171 & P0174 HELP?

Quote:
Originally Posted by programmer12
Thanks, I'll try the injector cleaner. I had the guy from autozone clear the code and boom five minutes later it went on again.

I'll get the injector cleaner.

Can the MAF be cleaned? It seems like a mechanical sensor. Wire heats up....

They must be able to thoroughly clean it at the factory when manufacturing the part, so couldn't I clean it also. With like a Qtip and alcohol.?

IS it worth a try. HOw do I keep it from getting dirty again? A dealer should reprogram my car to not heat up the maf after the engine is shut off so it won't attract oil to contaminate it.
Spray brake cleaner on MAF and let it dry... do not touch the wire.

Bob

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Old 04-28-2005, 10:40 AM   #25
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Default Re: Service Engine Soon - P0171 & P0174 HELP?

This did not fix my SES issues with these codes...and the wire is pretty clean now.

I am pretty certain I am experiencing a sensor issue, as it will run rough on inital startup, i can restart it at any time, and it runs perfectly.

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Old 04-28-2005, 01:44 PM   #26
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Default Re: Service Engine Soon - P0171 & P0174 HELP?

Quote:
Originally Posted by L300Boy
This did not fix my SES issues with these codes...and the wire is pretty clean now.

I am pretty certain I am experiencing a sensor issue, as it will run rough on inital startup, i can restart it at any time, and it runs perfectly.
Did you reset your ECU? I did the same... cleaned my MAF, then reset the ECU and the SES never came back. I had already ordered a new MAF, so I replaced it a week later with the new one and the car drives like new again.

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Old 05-01-2005, 09:45 AM   #27
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Default Re: Service Engine Soon - P0171 & P0174 HELP?

I got hit for $518 for MAF sensor replace anf Throttle body and injector cleam. This was last november 8 mos after 3 yr warranty ran out. I took tip from lostwages ls2 and went to Saturn Dealer about known problem and TSB details. Now I read on another thread 7 yr Warranty on Transmission control module. Is this justifialbe claim for refund

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