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Is my mechanic telling me the truth?
A month ago I got CE light on, had it checked and it came up knock sensor and 02 sensor 3 I believe (it's the 02 senor on the exhaust pipe after the engine), both were replaced at the Subaru Dealer. Anyway, after a week CE came back on, I took it back and he cleared the CE a week later it came back. I then left my car with them as I went on a holiday for two weeks with instruction to fix everything they could find wrong. Over $2000.00 later I picked up my car all was perfect...for 9 days and once again CE light same 02 senor. I'm thinking I have a defective 02 sensor, the mechanic now says it must be the MAF causing the 02 senor fault to show up and they want over $500.00 for the part. I still think they should try another 02 sensor before I shell out $500.00 for the MAF. My question, is the mechanic right and should I just go for the new MAF or should I insist on trying a new 02 sensor first. (anyone got a used MAF for sale?)
Oh ya to add to this, my transmission has now gone insane, works perfect sometimes and sometimes will not shift up into 4th gear, just rev's like crazy, it's going into the transmission shop on Friday.
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1996 Black, 134,000 KM, with Custom Stainless from Headers to Stebro, 17" Wheels, Michelin Pilot Sport PS2 225/45/17 Cold Air Intake. Pioneer AVIC D3 GPS/Video/Sound/Sirius/Bluetooth/USB Koni struts/ground control coilovers Stainless steel brake lines K&N filter, custom front grill H.I.D low beams 5000k 35w, H.I.D fog/driving 4500k 35w Clear front and corner lens |
#2
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Re: Is my mechanic telling me the truth?
I highly doubt its the MAF. What brand O2 sensor did they install? It makes a huge difference if its not OEM, or at least a good import brand like NGK. There could also be an issue with the wiring... my advice is take it to someone else who knows what they are doing.
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#3
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Re: Is my mechanic telling me the truth?
Sorry, you got screwed big time. Mechanics do not know the truth or how to find it... If you can't work out what your car needs with help from the people on this form, you have no chance.
That obscene bill had nothing to do with rectifying your car problem. Sanity dictates that if it did, the car would not still be doing the same thing. So sorry... Keith |
#4
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Re: Is my mechanic telling me the truth?
An 02 sensor code seldom comes in conjunction with an actual 02 sensor failure. That code is like a "catch all" thing.
Keith |
#5
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Re: Is my mechanic telling me the truth?
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The sensor and wiring can be easily tested, provided that the technician involved knows what he is about.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#6
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Re: Is my mechanic telling me the truth?
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You can replace the 02 sensor yourself quite easily, and unplug your battery for 30+ minutes to reset your ECU and clear your codes.
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Cam '92 Ls-L Dark Teal 11:1 CR ECUTUNE pistons ECUTUNE .256 duration intake/exhaust cams ECUTUNE STAGE 2AV1 ECU Z32 MAF/SR20DET injectors Balanced & Blueprinted |
#7
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Re: Is my mechanic telling me the truth?
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Tom |
#8
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Re: Is my mechanic telling me the truth?
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By way of trying to be of help (N.B. Keith.) in view of the page change, I am hereby making sure that your important advice does not become buried among the preceding superfluous stuff.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#9
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Re: Is my mechanic telling me the truth?
Trevor, here is how I see the original statement and why I must still disagree with you.
A month ago I got CE light on, had it checked and it came up knock sensor and 02 sensor 3 I believe (it's the 02 sensor on the exhaust pipe after the engine), both were replaced at the Subaru Dealer. The "I believe" is a him adding in a bit of uncertainty because he is referencing either something he was told, or what he believes based on perhaps limited knowledge. His description of the location of the sensor kind of helps support that. While it wasn't something worth correcting because it isn't entirely wrong but not entirely correct either. then i posted all of the OBDII codes for a 96 and newer subaru, that were O2 related. There isn't anything that says "sensor is bad". For all we know both codes could have been caused by his knock sensor. He could have been running lean causing a knock and not have had to replace either sensor, because his catalytic efficiency readings wouldn't be accurate. If he had his exhaust recently done then it could have a leak, he could have a vacuum leak because they may have pulled his intake to do the knock sensor. I still disagree with taking a car to a shop with a CE lit they reset it and send you on your way. I think that is wrong. You can get that done free at most autoparts shops. Hopefully they didn't charge him for that. I think everyone intends to help but with an intermittent problem it is a wild goose chase in some respects. If you look at all the potential causes for the P1151 which I was using as an example because it was the a rear sensor fault code. But I think so far everyone who suggested something could be found in the list of possibles. I am not disagreeing with you to pick on you or because I want to be an ass. I don't, however you give the impression that your way is the only way. A description given of what another tech is doing with their car is usually going to have some kind of details missing. |
#10
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Re: Is my mechanic telling me the truth?
sowise
You hold the advantage of addressing me in person, from a position of obscurity. You acknowledge, --- “I think everyone intends to help but with an intermittent problem it is a wild goose chase in some respects.” It is my opinion that the goose described is far too wild and chasing it ahead of a more logical approach is not good advice for laserx to follow, particularly as he is paying for the work involved. N.B. e.g. the now concealed post #15, inserted by Tom. It is unfortunate that in your view, putting forward an opinion backed with evidence, gives the impression that my intent is indicate that my way is the only way, when the real object is to emphasise what is best in the interests of the person requiring assistance.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#11
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Re: Is my mechanic telling me the truth?
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Keep in mind that you are not unique, Trevor. Nobody on earth knows everything and it is futile to try to convince people that you do. Keith |
#12
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Re: Is my mechanic telling me the truth?
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I apologize to Laserx for turning this thread into a back and forth verbal spat. Hopefully we will hear something about how it is fixed and running great with no CE, for little to no new cost. |
#13
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Re: Is my mechanic telling me the truth?
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Lee
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SVXx2 92 SVX LS-L Silver 92 SVX LS-L Burgundy (structurally challenged with 2792 miles) 96 SVX LSi Red 92 SVX LS Pearl (Parts) 01 F150 4X4 Red (+6 with other members of the family) FREEDOM IS NOT FREE |
#14
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Re: Is my mechanic telling me the truth?
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I am sincerely sorry to have in any way have obscured your valuable contribution. Therefore it is again reproduced above, in its rightful order. Trevor.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
#15
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Re: Is my mechanic telling me the truth?
laserx, did you resolve your issue with the CE light yet?
__________________
Cam '92 Ls-L Dark Teal 11:1 CR ECUTUNE pistons ECUTUNE .256 duration intake/exhaust cams ECUTUNE STAGE 2AV1 ECU Z32 MAF/SR20DET injectors Balanced & Blueprinted |
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