Hi does my 2002 2.5MY have a PCV valve i cannot find it in the manual i have and cannot see one
Cheers
Dave
Cheers
Dave
PCV valve
x1/9 dave
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Quick question chaps - is there a "PCV" on the S Type?
What's the part name?
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What's the part name?
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Thanks bud.
I don't remember one on my 2004 2.5litre S though.
Is it in the same location on your 3-litre?
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I don't remember one on my 2004 2.5litre S though.
Is it in the same location on your 3-litre?
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Sorry, my last post was incorrect... yes it has a pcv valve but in my engine it is under the injectors (not reachable without a lot of work)
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looks like the S type from M45255 have a different arrangement. The PCV is integrated into the Right bank breather on the valve cover.
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Dave, this is a dumb question, but have you cleared the codes after installing the new MAF. The code won't disappear by it self unless you drive the car for the required drive cycles. I am still not convinced that your issue has anything to do with the MAF and think you should go back and carefully check Trims under various conditions after allowing the car to properly relearn and stablise trims (Unless of course the car is not drivable)
As far as the ground is concerned, I would be a little careful in interpreting the ground information you are getting because I think your car has the sensor grounded via the ECU (so your car might be using a floating ground).
As far as the ground is concerned, I would be a little careful in interpreting the ground information you are getting because I think your car has the sensor grounded via the ECU (so your car might be using a floating ground).
If you only.have 11.8 volts after the surface charge has gone then the battery is technically dead. You must have +12.4 volts for these cars or it will not function correctly and you will get false codes.
This has already been explained to you!
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I agree with freebird, I think it's best to use and let the car stabilise for a couple of hundred miles now if it runs then check fuel trims again.
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Scotty Kilmer on cleaning MAFs:
Note that he says to Not use carb cleaner!
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Note that he says to Not use carb cleaner!
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Hi yes cleared the DTCs and the MAF P0102 came straight back, the car is not drivable at this time it will not rev over 1500 RPM is the car limited to that RPM when not in gear/moving, yes you are correct the MAF is grounded by the ECU but it is the whole car that the resistance is rising over if I run a cable from the negative terminal to the front of the car and bond it to any earthing point when the ignition is turned on the resistance rises I if I measure the resistance of the negative bonding cable only which is about 200mm the resistance rises over that
Hi sorry did not make it very clear the 11.8 v was after I had been playing for most of the day putting load on the battery taking load off it is a new good battery
Jim I agree with Freebird as well, think I need to complete some other bits which should not take long just waiting on good weather
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6,603 Posts
Back on post #43 I said the above. Your car is now telling you that the new MAF is faulty; as a tech, have you ever encountered a bad electronic component right out of the box?
Hi normally no i have not had one that fail quickly but normally work out of the box and MAF sensors are about as basic as you can get that is why going to china to get one did not bother me anything more complicated stay away from china
Dave
Dave
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86 Posts
Dave. My suggestion is going back to the repair manual can you help us understand all the steps you have taken for diagnosing the MAF electrical circuit. There should be 6 tests, 1 voltage and 5 resistance. (or for your car it might be 1 voltage and 3 resistance).
The two other common issues with a P0102 is throttle body malfunction and an air leak in the intake system. The throttle body should have given you a code, but to check (just in case) disconnect the hose and have someone look at whether the throttle body has full movement as you press the accelerator (ignition on).
The next step would be to monitor the short term and long term trims from cold until the car gets warm (10 minutes or so of idle should do). Then rev the engine to 1500 (if that is all you can) for 15 seconds and then monitor the trims at idle for a further 1 minute.
If you don't have a logger, then video the scanner and post the video.
The only caution here is that I am assuming the car is not misfiring. If it is misfiring, then I would not do what I am suggesting....
The two other common issues with a P0102 is throttle body malfunction and an air leak in the intake system. The throttle body should have given you a code, but to check (just in case) disconnect the hose and have someone look at whether the throttle body has full movement as you press the accelerator (ignition on).
The next step would be to monitor the short term and long term trims from cold until the car gets warm (10 minutes or so of idle should do). Then rev the engine to 1500 (if that is all you can) for 15 seconds and then monitor the trims at idle for a further 1 minute.
If you don't have a logger, then video the scanner and post the video.
The only caution here is that I am assuming the car is not misfiring. If it is misfiring, then I would not do what I am suggesting....
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