NOOB s40 owner stalling out problem P0102 - Volvo Forums - Volvo Enthusiasts Forum

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  #1  
Old 04-01-2009, 01:25 PM
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Default NOOB s40 owner stalling out problem P0102

I just got this 2001 s40, 97k on it.
It was working pretty well until last night.
It would start if you pressed the accelerator, but would cut out immediately when you let off the pedal.
I checked the codes and came up with P0102 only.
Googling that said MAF Low Freq.
I also found specific to the s40 people having vacuum leaks or throttle body issues.

I am planning to work on it in the next day or so.
Has anyone got any tips?

The only other issue it was having before this would be an occaisional hard start, but if you pressed the pedal it wouldn't start hard.

My theory is that the throttle body is gunked up and not letting in enough air at idle.
Smells like its getting plenty of gas based on what I smell from the exhaust.
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Old 04-02-2009, 08:29 PM
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Ok, I went to work on it this evening where it was parked.
Starting it again was exactly the same as the other night.
So I removed the air intake hose, sprayed in the throttle body with cleaner, worked it with a tooth brush for a little bit. Pulled the IACV, sprayed it with cleaner. Sprayed cleaner into the 2 holes the IACV was covering and worked them with the brush.
Pulled the MAF and sprayed MAF cleaner on it.
Put it all back together and it was the same stalling situation.
So I thought that I would try and get it home or to a shop, so I decided to try and drive it around the lot first. After only about 30 seconds of driving it seemed fine.
I made it home (about 20 miles) with no problems.
I cleared out the code p0102 code when I got back to the house.
Drove it around about 8 or 9 more miles with no problems, got it back home and reads no codes.

So now I am perplexed as to the problem and if the problem still exists.

I already have an appointment with the stealer in a few days to get a new key programmed (pure thievery). I was thinking of telling them the situation and see what they said.
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Old 04-05-2009, 07:44 AM
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As a follow up.
The problem came back the next day.
Again I cleaned the IACV again.
Worked ok for another day.
I decided then to just buy another IACV.
Swapped it in and the problem is gone.
I noticed after I pulled off the old IACV the flap was stuck so tight I had to use a screw driver to move it.
So the moral of the story, if you get P0102 check your IACV. You might get lucky with a cleaning. If not, you need to buy a new one for the insane price of close to $200.
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  #4  
Old 04-05-2009, 09:57 AM
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WOW the prices went way up on the IAC's!!!!
Glad all is well now.
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Old 04-06-2009, 05:00 PM
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that is what is wrong with mine that is y i am getting a american car i can afford
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Old 04-06-2009, 07:08 PM
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Quote:
Originally Posted by Dylan View Post
that is what is wrong with mine that is y i am getting a american car i can afford
Good luck with that.
I have had american cars and they have been big money pits too, especially saturns and GM's.
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  #7  
Old 08-11-2009, 05:47 PM
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Hi.

Our car is exhibiting the same problems w/ stalling when your foot comes off the gas. I'll check for vaccuum leaks, but what does "IACV" stand for? I know it's "something-something control valve"...

THanks
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  #8  
Old 08-12-2009, 08:15 PM
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IACV= Idle Air Control Valve.
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Old 08-12-2009, 10:14 PM
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Thanks
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Old 12-14-2010, 01:18 AM
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Nice work! Your post is an excellent example of why I keep coming back to read your excellent quality content that is forever updated.

testking ccie | testking ccnp | testking ccda | testking mcts
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2000, 2005, body, cleaning, code, gm, iacv, immediately, located, p0102, s40, s80, stall, stalls, start, throttle, volvo


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