SaabCentral Forums banner

1 - 9 of 9 Posts

·
Registered
Joined
·
89 Posts
Discussion Starter · #1 · (Edited)
I went to Auto Zone today with the check engine light on.

They read these codes... They might not be exact he didn't write them down well..

Code 300 - Random Misfires
C0171 - System too lean (bank 1)
Code 1171 - Fuel Air Metering malfunction
Code 130 - 02 Sensor Malfunction (Bank 1 Sensor 1)

I dont know if it matters what the beginning was.. but I looked at one and it was like P0 and the number..

Any help would be VERY appreciated.

Joe
 

·
Registered
Joined
·
89 Posts
Discussion Starter · #2 ·
Model and Year.. oops forgot

I guess I should have mentioned the model and year...


Its a '98 900 SE 2.0 Turbo

Thanks!

Joe
 

·
Registered
Joined
·
4,293 Posts
You can look up the codes here: http://www.iequus.com/obd_def.asp

And read about the O2 sensors: http://www.autotap.com/oxygensensors/ppc_oxygen_sensors.html

Figuring out O2 sensor failure is not as easy as it seems, especially when there is more than one diagnostic code. If the O2 sensor is going bad at less than 100k miles, there is usually some reason for it.

Something is making the car run lean. It could be as odd as a cracked vacuum hose to the FPR which would prevent the FPR from regulating the fuel pressure, or as simple as the front (Bank 1 Sensor 1 is the front one) O2 sensor going bad.

Check ALL the vacuum hoses, they cause no end of problems when they get old and brittle, and only cost about 50 cents per foot to replace. See link below:

http://www.geocities.com/ng900set/Vac_hoses/vac_hose.html
 

·
Registered
Joined
·
89 Posts
Discussion Starter · #4 ·
Just an update: For the codes above, they did a tune up, replacing the spark plugs, Air filter, Fuel Filter and replaced the timing belt (our SAAB has 95k miles) and I am not sure if it was ever done.

So it was looking like an 02 sensor, but in the end, a good tune up and some replacement parts. Total: $360 ($210 of that was Labor)
 

·
Registered
Joined
·
1,816 Posts
Id still keep an eye in that o2 sensor as when mine died I had the same first and last code as you.
 

·
Registered
Joined
·
261 Posts
The missfires could be making the O2 code come up becuase when a cylinder missfires, all of the oxygen comes through, becuase nothing burned. Sounds to me like, if I read correctly) you need a tune up. Or, I dont know if these units go out all at once, but the ignition cassette, when that goes bad, I know it loses spark, but usually it just stops running, right?

Code 1171 - Fuel Air Metering malfunction that one throws a red flag too. Check fuel pressures.
 

·
Registered
Joined
·
89 Posts
Discussion Starter · #7 · (Edited)
I got the tune up.. I was expecting 02 sensors, ignition and/or the turbo bad.. but end the end, they did the tune up changed those filters and its running like a champ, no codes, got her get up and go back :)
 

·
Registered
Joined
·
89 Posts
Discussion Starter · #8 · (Edited)
Another Update....

Since this post, I have had it back in the shop for the Check Engine Light on.

Today at around noon they found a couple of bad hoses, "They were dry and broken" as per the labor description on the ticket. Cost $42 dollars parts and labor.

This evening, the check engine light came on *again* :cry:

I was on my way to the local O'Rileys Auto Part Store to pay for my special order of the Haynes manual for the car when it happened. Since I was there, I got their code reader and read the codes.. 2 of the original codes. This afternoon, he didn't tell me what code/codes it had, I can only assume it was one or both of these.

P0171 - System Too Lean (Bank 1)
P1171 - Closed Loop, Lean Mixture

I am going to have him check out the whole system again.
Will post more when I find out whats going on.
 

·
Registered
Joined
·
89 Posts
Discussion Starter · #9 · (Edited)
PMI said:
You can look up the codes here: http://www.iequus.com/obd_def.asp

And read about the O2 sensors: http://www.autotap.com/oxygensensors/ppc_oxygen_sensors.html

Figuring out O2 sensor failure is not as easy as it seems, especially when there is more than one diagnostic code. If the O2 sensor is going bad at less than 100k miles, there is usually some reason for it.

Something is making the car run lean. It could be as odd as a cracked vacuum hose to the FPR which would prevent the FPR from regulating the fuel pressure, or as simple as the front (Bank 1 Sensor 1 is the front one) O2 sensor going bad.

Check ALL the vacuum hoses, they cause no end of problems when they get old and brittle, and only cost about 50 cents per foot to replace. See link below:

http://www.geocities.com/ng900set/Vac_hoses/vac_hose.html
Very good description and photo's on that site PMI !!! I am going to put a link to that site from mine, when I get it built.

I just went out and looked and the first thing I saw right off the bat was the hose coming out of the Charge Air Bypass Valve in the front of the engine, was half off, broken and brittle.


It runs from the Charge Air Bypass Valve to port 4 of this part. So.. I want to know what hoses they replaced. egads! I hope this fixes it.
 
1 - 9 of 9 Posts
Top