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Discussing O2 sensors in the 5.0 Mustangs Forum. i think i have a bad O2 sensor, what would some of the symptoms be ...

       

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Old August 22nd, 2007, 04:50 PM   #1
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O2 sensors


i think i have a bad O2 sensor, what would some of the symptoms be if the sensor is bad?
 

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Old August 22nd, 2007, 04:52 PM   #2
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· decreased fuel economy
· hesitation on acceleration
· stalling
· surging
· rough idle and
· increased tailpipe emissions
 
Old August 22nd, 2007, 04:54 PM   #3
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well the car will die when it reaches operating temp, and i cant start it again until it cools....the engine will turn over it just wont run.
 
Old August 22nd, 2007, 04:54 PM   #4
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If its been more then 75,000 miles since they were last replaced, I would replace them any way.

You only want to get motorcraft ones though, they are calibrated properly.
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Old August 22nd, 2007, 04:56 PM   #5
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Originally Posted by 92_LX_5.0
well the car will die when it reaches operating temp, and i cant start it again until it cools....the engine will turn over it just wont run.
That sounds more like a fuel pump issue to me.
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Old August 22nd, 2007, 05:03 PM   #6
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thats the thing, i am running at 45psi, when i just turn on the fuel pump, and 55 psi when it car is running about 1300 rpm....and the car wont idle. i just built an engine and installed it, i am trying to work out all the kinks...
 
Old August 22nd, 2007, 05:06 PM   #7
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Any chance of a vacumn leak?
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Old August 22nd, 2007, 07:36 PM   #8
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not likely
 
Old August 23rd, 2007, 07:05 PM   #9
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ECT or dirty MAF sensor maybe?
 
Old August 23rd, 2007, 11:00 PM   #10
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all new man...i appreciate the input, but i am going home this weekend to do some more trouble shooting...i will let you know how it turns out....thanks bro
 
Old August 24th, 2007, 06:59 PM   #11
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o2


I replaced my O2 sensors when my car was running crappy below WOT. Mine ran perfect at WOT, but would barely stay running otherwise. The O2 sensors did the job. An amazing difference.
 
Old August 24th, 2007, 07:15 PM   #12
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O2 sensors are your dads veins out of his penis.

They fat and long dodgy.

Suck on his fat one.
 
Old August 24th, 2007, 07:23 PM   #13
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Originally Posted by HKS-TURBO
O2 sensors are your dads veins out of his penis.

They fat and long dodgy.

Suck on his fat one.
Someone translate this, please.
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Old August 24th, 2007, 07:28 PM   #14
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Originally Posted by HKS-TURBO
O2 sensors are your dads veins out of his penis.

They fat and long dodgy.

Suck on his fat one.
Thats the most inteligent thing Ive heard from this guy yet.
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Don't be afraid to come in your pants.
 
Old August 24th, 2007, 07:33 PM   #15
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Originally Posted by JBIGBOOTSY
Originally Posted by HKS-TURBO
O2 sensors are your dads veins out of his penis.

They fat and long dodgy.

Suck on his fat one.
Thats the most inteligent thing Ive heard from this guy yet.
Monnnggggggg.

You dirty fuckerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr rrrrrrrrrrrrrrrrrrrrr.

Go suck on ya pillock
 
Old August 24th, 2007, 07:36 PM   #16
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I love you, HKS I really do.
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Old August 24th, 2007, 07:53 PM   #17
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this guy is a trip
 
Old August 24th, 2007, 09:11 PM   #18
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HKS-TURBO:
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