Check Engine Light coming on

GeoffHolter
0

Asked by Mar 02, 2013 at 05:55 PM about the 2002 Porsche Boxster

Question type: Maintenance & Repair

My check engine light keeps coming on.  The codes say that the only thing wrong is one of the oxygen sensors not quite functioning at par.  I have replaced the mass air sensor, had it subsequently removed and re-inserted and replaced a loose hose.  In each case, the light goes off for a few days and then comes back on.  The engine seems to be running fine.  Any suggestions on what I should do next?

11 Answers

judge_roy
Not Active

take a look at your gas cap...and replace it as it isn't behaving itself....also when you gas up stop at the first click or you'll bugger up your canister and ALWAYS have comprimizing the CAT to be the order of the day....requires long hard drivin, like up a mountain to burn it with the healthy equipment installed.

5 out of 5 people think this is helpful.
judge_roy
Not Active

I've seen oxygen sensors fail....and what happens as they get 'gobbled up' by the combustion gasses...leavin a stub...which can still do the job?!...but you haven't been running this NEW sensor long enough for it to be the cause-

5 out of 5 people think this is helpful.
judge_roy
Not Active

Sure do love the air-cooled design...I assume that yours is still this way, and the racetrack ready nature of the beast is on par with the MINI. what I drive and am anxious to see what it can do...right now--not even the S model is prompting the driver to go faster....go faster-

2 out of 2 people think this is helpful.
7jimmy7
16,045

o2 sensor heater may be weak,try a different fuel.if often enough it will bring light on always till reset

3 out of 3 people think this is helpful.
tenspeed
77,745

The CEL is on and the code says that it's the O2 sensor.... How about replacing the bad O2 sensor? You replaced the MAF sensor instead?

1 out of 1 people think this is helpful.
Kenneth Westergaard
65

I've had a cracked hose that behaved like what you describe

2 out of 2 people think this is helpful.
judge_roy
Not Active

tenspeed is right. The thing will NOT run right until the O2 sensor is checked and possibly changed-

1 out of 1 people think this is helpful.
Porsche60
80

Try running it hard for a while, burn out the crap ethanol does bad things to allot of things on these cars. Then reset by pulling fuse wait 10 sec. And put back in. It is worth a shot before going through a bunch of diag.

6 out of 6 people think this is helpful.
judge_roy
Not Active

I bought a special socket for O2 sensors and used it maybe twice. It's like an ordinary deep well, but with a slit going up the side for the wire~ I understand your trepidation...but these can be tested still "in play"--what's it doin' to the air/fuel mix? if it's a wrong mix, this little goodie is to blame-----(amongst many culprits on this car)

1 out of 1 people think this is helpful.
Victor Jeong
345

Tenspeed is right, why are you mucking around with the Mass Air Fuel snesor when the coe is pointing towards the O2 sensor? How about telling everybody what code you got so we can stop guessing as to what's your problem; and start telling you what the True fix should be. There are Hundreds of codes that can be pulled, and without stating what code you pulled, any answer to your question may have you throwing a bunch of unneeded parts and money to correctly fix your problem.

1 out of 1 people think this is helpful.
TedPorsche
85

changed out the air injection valves there are 3 cost $250 for parts

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Boxster
Looking for a Used Boxster in your area?
CarGurus has 2,040 nationwide Boxster listings starting at $3,000.
ZIP:

Search Porsche Boxster Questions

Porsche Boxster Experts

#1 Michael Kane
Michael Kane
Reputation 150
#2 littlehorn
littlehorn
Reputation 140
#3 Andrew Dickens
Andrew Dickens
Reputation 110
View All

Related Models For Sale

Used Porsche 911"
144 Great Deals out of 4,826 listings starting at $12,000
Used Chevrolet Corvette"
194 Great Deals out of 16,486 listings starting at $2,900
Used BMW Z4"
50 Great Deals out of 1,585 listings starting at $3,999
Used Porsche Cayenne"
81 Great Deals out of 5,125 listings starting at $6,400
Used Ford Mustang"
311 Great Deals out of 47,293 listings starting at $1,100
Used Mercedes-Benz SLK-Class"
85 Great Deals out of 2,236 listings starting at $2,500
Used BMW 3 Series"
1,020 Great Deals out of 41,291 listings starting at $1,350
Used Mazda MX-5 Miata"
71 Great Deals out of 3,366 listings starting at $1,500
Used Audi TT"
49 Great Deals out of 1,248 listings starting at $3,650
Used BMW M3"
50 Great Deals out of 1,365 listings starting at $4,300
Used Mercedes-Benz SL-Class"
112 Great Deals out of 3,795 listings starting at $4,795
Used Chevrolet Camaro"
276 Great Deals out of 26,458 listings starting at $1,900

Used Cars For Sale

2015 Porsche Boxster For Sale
3 Great Deals out of 232 listings starting at $41,993
2014 Porsche Boxster For Sale
5 Great Deals out of 171 listings starting at $37,987
2013 Porsche Boxster For Sale
12 Great Deals out of 238 listings starting at $35,588
2012 Porsche Boxster For Sale
5 Great Deals out of 24 listings starting at $26,999