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Old 03-21-2010, 03:06 PM   #1
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P0102 code - cleaned MAF - no help

I got the P0102 code. several people suggested cleaningi the MAF.

After spending about $50 on cleaner and the torx bolt - i cleaned it. code came right after i drove it for 5 min.

i may try to clear it again..but i don't think the MAF was the problem. when i looked at it, the thing looked shiny / clean.

any other suggestions before I take it to the mechanic?

i thought great... something else that is going to cost me $500+ to fix...

that old saying the cheapest porsche you buy is hte most expensive one to fix - so true. i've had the car 18 months, it had 74k on it, it now has only 78 k..so I put a whopping 4k miles on it and I've spend $3000 in maint and reapirs.

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Old 03-21-2010, 03:28 PM   #2
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3 causes listed

Open circuit
Short circuit to ground
Mass air flow sensor

A dealer should have and use the special #9637 tool and a PST2/PWIS to check the first 2. Or they can just plug in a new MAF and drive it for a while.

About the only thing you can still check is that the air cleaner is clean.

You buy a used car...things are going to go wrong..no matter the make/model.
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Old 03-21-2010, 05:55 PM   #3
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yeah... i know used cars cost. i'm just whining... after being furloughed at work and eating $1000/month in reduced income...i'm hyper sensitive to car repairs now...

sometimes I start thinking of selling it and just get another when work/the m arket / economy picks back up.

i'll have to fix it n o matter what. off to the mechanic and see what he says. i'll pass on the stealer and take it to myinndie. he is pretty reasonable.
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Cars:
2007 MDX - Wife's mommy mobile
2006 RL - My daily driver
2000 Boxster - Ocean Blue Base 5spd on Black Full leather. 18" wheels and M030.

Boxster mods I've added: Rear speaker kit, Painted Calipers, Painted Bumperettes, Painted Center Console, 987 Shifter Assembly, 3 Spoke Steering Wheel, Clear side markers, 03+ rear lights, de-snorkeled.
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Old 03-22-2010, 05:28 AM   #4
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Maf

Had the same issue, P0102 code kept coming on even after cleaning the MAF. It came on three times in about a month and a half. Finally decided to change the MAF for a new one. The old one had a P/N 986.606.125.00 so I figured it was pretty old. Might have been the original for all I know. The new one has a .01 suffix.
I've had the car for 2 years, a 2000S with 104K on it now. I have put about 6K of miles on it since I got it and about the same ($6K) in repairs. So I'm 3K ahead of you! Similar to you, I got layed off almost a year ago, so now I find the time to do my own repairs if they aren't too demanding.
You can get a new MAF online for about $240-280 depending on model year. You already know how to change it out. The cheapest I've seen it for is $223-234 at ********************************************************************************************. I've purchased from them before and so far no complaints. Got mine from my local P-car/racecar indie shop for the same price and got it in last week, no P0102 code yet. Car accelerates a lot better now, used to have a sagging sensation when you gave it the "passing mode" throttle position. Now that the weather here is starting to warm up, I can test out the "passing mode" more often.
Update: Just saw one on ******************************** for $216.51
http://www.************************************************************/search/product.aspx?sid=mhmrr555uywamv5503ot4c45&partnumber=0280218055

Last edited by Spinnaker; 03-23-2010 at 03:38 AM.
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Old 03-23-2010, 10:18 AM   #5
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I called my indie mechanic and he said they can hook up my car to their diagnostic computer. they'd charge me $50 for the diagnostic. He said if the MAF is actually BAD and needs to be replaced, this check would confirm that.

I just wanted to see if you guys concur with what he said. is it possible that you can hook up the car to the computer, and it will be able to read the MAF's data or what the MAF is reporting - and basically tell me if the MAF is the problem or not?

does the diagnostic system have the ability to be that specific or will it just give them some data and i'll get told "maybe" it's the MAF or "we think" it's the MAF..and I"m just back to where I am now and I wasted $50 to get told what I already know. at this point, from what i've read, it sounds like it's "probbly" my MAF gone bad..but who knows.

I can either spend teh $250ish now and just change it myself and see if that fixes it, or "invest" $50 to see..

what would you guys do?
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Cars:
2007 MDX - Wife's mommy mobile
2006 RL - My daily driver
2000 Boxster - Ocean Blue Base 5spd on Black Full leather. 18" wheels and M030.

Boxster mods I've added: Rear speaker kit, Painted Calipers, Painted Bumperettes, Painted Center Console, 987 Shifter Assembly, 3 Spoke Steering Wheel, Clear side markers, 03+ rear lights, de-snorkeled.
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Old 03-23-2010, 12:49 PM   #6
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what would you guys do?

Hindsight is 20/20, and foresight is a crystal ball filled with uncertainty.
If your MAF is still the original, I would think that it maybe due for a replacement, since your car is a 2000 like mine is. From what I have seen on the forum from others, the MAF seems to be a common issue. I don't have any info about whether a diagnostic can determine if the MAF is truly bad or if it is potentially bad.
I just kept resetting the CEL to see what happened, and got the same error code after looking for other causes. The OBDII reader I bought has paid for itself. According to the Bently manual, the P0102 indicates a "lean mixture threshold", which is what I felt during acceleration. Do you experience any of these symptoms? Repairing cars is sometimes a process of elimination. You eliminate everything else that can be the problem until there is only one thing left. Sometimes, you get clues from the experience of others that had the same problem, or use the experience of those that work on them for a living.
I know that financial issues can sway decisions, if I were still employed I would do lots of things differently. Sometimes you just have to roll the dice and live with the results. Do I spend $50, $250, or $300? We can't roll the dice for you. On my car, I rolled the dice and won. Its your turn.....
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Old 03-23-2010, 04:12 PM   #7
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On a 10 yr old car it's just a matter of time until the MAF fails, if it hasn't already. Tons of posts about this. My mechanic said mine's on the way out in my '02S w/74k miles.

I'd spring for a new one from a trusted source (not eBay). From what I've read ************************************************************ seems to have consistently competitive MAF prices. For your '00 they have two Bosch units available at "special sale prices": Non-e-gas type for $155.96 and E-gas type for $216.51. I believe '00 is the first year for e-gas.

Pelican Parts shows two part numbers for '00 (both e-gas): 996-606-124-00 for $233.50, and 996-606-125-01 for $286.00. I think the 125-01 is an updated version of the 124-00. Someone will I'm sure chime in on this, but there are other threads you can search for these details.

Regarding part numbers, you may find this useful:

http://www.renntech.org/forums/index.php?showtopic=2627?

Once you know exactly what part number you need, and I think it's the 125-01 based on the thread above, shop hard.

Last edited by gschotland; 03-23-2010 at 04:25 PM.
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Old 04-01-2010, 05:42 PM   #8
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replaced the MAF - car runs wonderful.

after the new MAF went in and the code was cleared, the car idles really weird...it sputtered for a good 15 min...but afte I revved/drove it, that went away. the car felt more responsive, and clearly has more power.

i wouldn't say the power gain was HUGE - but it was enough that I could feel it - so it's got to be something fairly significant.. i.e., more than 5hp??

the car also feels MUCH smoother...the engine revs smoother and off throttle, seems to decellerate more smoothly...

overall - this was a good part to replace. my car has 78k miles..

i took my car right to the smog stationa nd it failed the OBD check p[ortion of the smobg..it passed the sniff test but apparently after resetting the ECU, the car goes through some internal checks and it hadn't done them all..i called my mechanic and he said to drive it around more and it woudl likely do all it's self checks and then it would pass that part fot he smog test..

if your car has P0102, don't postpone ch anging the MAF like I did. change it out. I was under the impression that it was a part that wasn't really supposed to wear out but would jsut get dirty and you could clean them and they'd be ok.

my mechanic explained that the MAF heats up and is very hot in the intake track and that over time, they simply wear out...he compared it to a spark plug in that they do last a long time - but they DO wear out and WILL fail... my car has 78k miles on it...

all I can say is that changing the MAF out clearly affected performance for the BETTER.

when I start to apply thorttle it feels like it starts accelerating soooner, more smoothly,, and it pulls more evenly throgh the revs. when it hits the upper rpms it feels stronger too. like i said earlier, it's not like bolting on a supercharget or something drastic...but it was WELL worth the price of the new part!
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Cars:
2007 MDX - Wife's mommy mobile
2006 RL - My daily driver
2000 Boxster - Ocean Blue Base 5spd on Black Full leather. 18" wheels and M030.

Boxster mods I've added: Rear speaker kit, Painted Calipers, Painted Bumperettes, Painted Center Console, 987 Shifter Assembly, 3 Spoke Steering Wheel, Clear side markers, 03+ rear lights, de-snorkeled.
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Old 04-01-2010, 06:57 PM   #9
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Glad to hear you had a good result.

I went through the same thing with mine last year. After wasting money on different "quick fixes" I found the best procedure.

1. I take it to my Porsche specialist mechanic (non dealership though) who has the Porsche diagnostic computer. List of fault codes cost me $50, a small price to pay to take the guesswork out of diagnosing.

2. Buy parts online to get the best price. The only caveat here is make sure the Porsche part number is the same. I bought some O2 sensors from an online store from a guy who assured me they were correct. They weren't and I got stuck with them.

3. Self-install if possible, or else find a competent shop who are not too expensive by the hour and don't mind you supplying your own parts. (My Porsche specialists do this for me).

This seems to be the most efficient, simplest and least expensive long-run procedure.
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Old 04-01-2010, 10:57 PM   #10
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"replaced the MAF - car runs wonderful"

You rolled the dice and won!
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Old 04-01-2010, 11:03 PM   #11
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Where did you buy and what did you end up paying? I'll be in the market soon enough.
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Old 04-02-2010, 06:46 AM   #12
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Got my Boxster S Wednesday. First thing I did was replacing the MAF. The codes shown disappeared and as expected the car runs MUCH better. Perfect I must say.
Did not even bother cleaning it. Saw how dirty it was and simply did not want to take any risks as I am driving the car all the way back from Santa Monica to Ottawa, Canada!
So far, I am in Vegas, leaving to Denver in a couple minutes. The car has been flawless.
New tires, new plastic window, new MAF, oil changed, etc. Runs beautifully.
Pray for me guys until this trip is over.

CR

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