Moderator: volvite
Maybe a stupid question, but with MAF you mean the mass air flow sensor?palmerwmd wrote:Have they tried running the car with a known good Nissan OEM MAF?
I once had broadly similar symptoms but the car was also in limpmode.
Would happen maybe 20% of the time out driving.
Dealer could not find cause, blamed the "modifications" (it was a 350Z w/ a VQ engine aftermarket supercharged)..
Turns out it was a bad MAF..
Yes I mean the mass air flow. I know based on the nature of your lights it seems counter intuitive... but i hd those exact same lights even to include ABS but I was in limpmode... mybe they lit up snce i was in limpmode?Bernt wrote:Maybe a stupid question, but with MAF you mean the mass air flow sensor?palmerwmd wrote:Have they tried running the car with a known good Nissan OEM MAF?
I once had broadly similar symptoms but the car was also in limpmode.
Would happen maybe 20% of the time out driving.
Dealer could not find cause, blamed the "modifications" (it was a 350Z w/ a VQ engine aftermarket supercharged)..
Turns out it was a bad MAF..
Is it possible to check if this is broken?
'preciate the quick response chief!palmerwmd wrote:Yes I mean the mass air flow. I know based on the nature of your lights it seems counter intuitive... but i hd those exact same lights even to include ABS but I was in limpmode... mybe they lit up snce i was in limpmode?Bernt wrote:Maybe a stupid question, but with MAF you mean the mass air flow sensor?palmerwmd wrote:Have they tried running the car with a known good Nissan OEM MAF?
I once had broadly similar symptoms but the car was also in limpmode.
Would happen maybe 20% of the time out driving.
Dealer could not find cause, blamed the "modifications" (it was a 350Z w/ a VQ engine aftermarket supercharged)..
Turns out it was a bad MAF..
Is it possible to check if this is broken?
Does your vehicle go into limpmode ( cannot drive over 62mph) when this happens?
The best way to check the function of the MAF is t attept to operate the car with a known good MAF..
THe MAF is expensive the install very easy should be nominal fee to install if yur shop has a MAF lying around... (this of course would generally only the case with a nissan dealer)
Its probably best to wait for SMJ to chime in.. He is our resident master tech and his advice on things like this is better than mine.
Ill contact one of the junkyards here, and hear if they might have a good MAF I could try.palmerwmd wrote:The thing with MAFS is the car really likes the Nissan OEM.. Many, or rather most, of the ebay or even autozone MAFS are not very good..
I speak from experience.
A used MAF out of junkyard is probably better than "new" one from an autoparts store that's "like OEM".
A new one from Nissan is hundreds. so don't just throw it in w/o knowing its the cause.
But I see how at 50 bucks u are willing to experiment.
If the MAF is not the cause your preexisting OEM MAF with that many miles may still be a better math than a new ebay one.
Thanks a bunch for the reply!smj999smj wrote:I can see where the faulty MAS idea comes into play. When the ECM detects an engine management issue (i.e. faulty MAS), it disables the traction control system and illuminates the ABS/SLIP/VDC warning lights. However, unless there is a stored powertrain trouble code, I doubt the issue is a faulty MAS and more of an ABS issue. With so many codes triggered and re-setting of those codes after erasing them, there is a very good chance that the ABS controller, which is part of the ABS actuator assembly, is at fault. There have been a number of reported failures of the ABS controller. The bad news is that it is very expensive brand new. The good news is that they can be had for around $150 (sometimes less) from auto salvage yards. Just make sure if you go that route, get the right part number because there are a few different part numbers dependent on the specs of the vehicle (Off-road vs non-off road, automatic vs manual, etc.). As far as the wait detection switch, it screws into the transfer case and detects if the transfer case is in 4WD mode or not. The switches sometimes go bad and they usually run around $33. It's difficult to say for sure whether replacing the ABS actuator assembly will fix one or all of your problems unless one goes through the diagnostic procedures for those given codes that are given in the factory service manual for your vehicle. Without doing that, one is simply just replacing parts and gambling on the outcome.
Last question.smj999smj wrote:Yes, that's the ABS actuator assembly.