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Fuel Systems -- Maintenance & Repair

191 messages,  Last post on Sep 23, 2011 at 10:41 AM

You are in the Maintenance & Repair Forum.

What is this discussion about? Car Safety, Fuel System, Electrical, Fuel System, Alternative Fuels, Diesel, Hybrid Cars, Car Financing, Fuel Efficiency (MPG), Car Warranties, Coupe, Convertible, Hatchback, Truck, Sedan, Wagon, SUV, Van

Messages Page 19 of 20

#172 of 191 Re: Throttle Body Service [Mr_Shiftright] by jipster

Mar 21, 2009 (6:20 am)

Replying to: Mr_Shiftright (Mar 20, 2009 3:44 pm)
What do you thinik of "Seafoam" for cleaning throttle bodies?

#173 of 191 Re: Throttle Body Service [jipster] by obyone

Mar 21, 2009 (9:12 am)

Replying to: jipster (Mar 21, 2009 6:20 am)
Not worth the price of the can. The TB needs agitation to clean. Seafoam is impressive with all the white smoke it makes must be good for mosquito control.

#174 of 191 Re: Throttle Body Service [obyone] by Mr_Shiftright HOST

Mar 21, 2009 (10:43 am)

Replying to: obyone (Mar 21, 2009 9:12 am)
Yeah he's right. You need to scrub.

#175 of 191 Re: Throttle Body Service [Mr_Shiftright] by jstawski

Mar 21, 2009 (11:02 am)

Replying to: Mr_Shiftright (Mar 20, 2009 3:44 pm)
I went to AutoZone and ran a diagnostic test. Here is the result:
 
Code: P0171
 
Definition:
Fuel trim bank one condition
 
Explanation:
The powertrain control module uses the oxygen sendsor to calculate the air/fuel ratio of the engine. The computer has recognized a rich or lean condition on one engine bank only.
 
Probable Causes:
1. If bank one and two codes set together suspect fuel pressure or MAF (Mass Air Flow) Sensor.
2. Oxygen sensor defective.
3. Ignition misfire-repair.
4. Fuel injector problem.
 
Troubleshotting: N/A
OEM Brand: OBDII
 
The PCM has determined that during testing, the fuel system for bank 1 was too lean. (Bank 1 identifies the location of cylinder #1, while bank 2 identifies the cylinders on the opposite bank).
 
What do you think?

#176 of 191 Re: Throttle Body Service [jstawski] by Mr_Shiftright HOST

Mar 21, 2009 (11:28 am)

Replying to: jstawski (Mar 21, 2009 11:02 am)
Well that's just a generic code, doesn't tell you much.
 
This could be a vacuum leak in/under the intake manifold or a leaking "J' pipe for the evaporative emissions systems. Use of a smoke machine can usually dig this out. So you might snoop around for vacuum leaks...that will trigger P0171 I am told.

#177 of 191 Re: Throttle Body Service [Mr_Shiftright] by jstawski

Mar 21, 2009 (2:04 pm)

Replying to: Mr_Shiftright (Mar 21, 2009 11:28 am)
I'm car ignorant so everything you just said is like chinese to me. Should i just take it to the dealership? The guy at Autozone told me that I hsouldn't trust any other mechanic with my Volvo other than the dealership cause they are very complicated.
 
is he right?

#178 of 191 Re: Throttle Body Service [jstawski] by Mr_Shiftright HOST

Mar 21, 2009 (2:40 pm)

Replying to: jstawski (Mar 21, 2009 2:04 pm)
Don't you have some independent Volvo shop in your area. Maybe AAA can recommend one.

#179 of 191 Re: Throttle Body Service [jstawski] by obyone

Mar 22, 2009 (10:33 am)

Replying to: jstawski (Mar 21, 2009 2:04 pm)
Last I seen dealerships were running upwards of $125/hr for labor. Imagine taking two hours to diagnose and a hour to repair. Plus parts marked up at 100% would give me an uneasy feeling. Find a local shop specializing in imported cars.

#180 of 191 Re: Throttle Body Service [jstawski] by dtownfb

Mar 25, 2009 (6:16 pm)

Replying to: jstawski (Mar 21, 2009 11:02 am)
Isn't the car still under warranty?
 
Anyway, I would do a Google search on "Volvo S40 P0171". Like Shifty mentioned, what Autozone gave you is a generic description. doing the search will pull up this code specific to Volvo. You can read up on other Volvo owners issues with this code. It seems it is fairly common code with a few solutions.
 
If you don't trust the dealership, you should be able to find an independent mechanic that specializes in Volvos (if you live near a city).
 
Good luck.

#181 of 191 Re: Throttle Body Service [dtownfb] by jstawski

Apr 02, 2009 (6:16 am)

Replying to: dtownfb (Mar 25, 2009 6:16 pm)
I called a few shops in the area and they've told me it most likely is a faulty sensor. Since the car was still under warranty I called the dealer and spoke to the manager who tol dme to bring it back in. After a few hours of waiting they've replaced the faulty sensor which was still under warranty and everything was back to normal. Of course I returned the vehicle to the dealer right after that. Mission accomplished. Thanks for the suggestions.

Messages Page 19 of 20

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