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As I am encountering problems with my MAF(AFM), was wondering if there are any go to manufacturers for our sensors? Any to stay away from?
I am receiving a loaner soon to make sure it is the sensor and not a wiring problem. Will be checking power and ground to it, as well as checking the signal output voltage tomorrow.
Just wanted to start shopping around soon and being our sensors aren't cheap I want to purchase one that will last.
That's what I was afraid of. I found a used one on eBay "tested and in working condition" for $60. It's being shipped now. Will send the loaner back to its owner when it comes.
Had a chance to test it this morning when I got to work. Getting battery voltage and ground to it. But the signal is sending .09v at whatever range, idle to WOT. No where even close to a volt at idle. Don't really need the loaner now. That AFM is fried.
The car only has 53,500 miles, but the sensor is not original, it's a fuel injection Corp. aftermarket. The guy I bought it from had a few xj6's and I'm pretty sure he switched it out between cars.
Are the genuine sensors a problem child for this vehicle or are they pretty reliable?
I assume your OE MAFS is the Lucas LHE 1620 AA if you have the Lucas-Sagem-GEMS Engine Management System (EMS). If so, I don't know of any source other than Jaguar for an OEM unit, and both jaguarclassicparts.com and jaguarmerriamparts.com show that part as discontinued and no longer available (and when last available the "discounted" price was $1,315.03!!!)
RockAuto and Parts Geek are both out of stock on all of their aftermarket options. I just checked everydayxj and growlerparts and no luck there.
This U.K. company claims to have a new (probably aftermarket) unit in stock:
In the absence of a reliable source for an affordable new one, a working used one may be the only option. Unfortunately, that is increasingly becoming the state of things for many XJ40/X300/X308 parts.
In the absence of a reliable source for an affordable new one, a working used one may be the only option.
This.
Looking at the prices of oem sensors makes me cringe. $1400 for a maf is beyond insane. That's a third of what I paid for the car. That being said, I love my car and if push comes to shove I'll try and find the part and pay the price.
Originally Posted by mgb4tim
Would you trust a used one?
Not until I test drive it and test the output signal. How long it will last is a whole other story, only time will tell, and that is assuming it's good.
Originally Posted by Don B
Please let us know how it works out.
The tracking says it expected delivery date is Thursday. I'm leaving for New York City Friday and I won't be back till after the new year. If it comes after I leave I won't be able to put it back in until I get back in town. But I will definitely update and let everyone know how it went
Update: I jumped in my car today after work to go home. Nothing but stalling unless I keep my foot on the gas, which also sounds like a idle control valve problem. I'm 100% sure my maf is bad. Hopefully that's the only thing wrong with it. Guess I'll have to wait to put in the replacement to find out. Maybe cleaning the IACV won't hurt either.
The car was running pretty bad for about a week before it finally threw the P0102 code. I cleared it, and even now, the code has yet to reappear. I know our cars are hesitant to throw misfire codes, is that true with other types of codes?
I purchased one of these Air Flow meters (LNA-1620AA) from World car Parts Dec. 2014. Cost with postage here to Australia from the UK was AUD$238, very reasonable I thought & happy with product & service.
Whilst unbranded it appears to be new.
Are you sure that is your problem, I would attempt to narrow it down as much as possible.
I purchased one of these Air Flow meters (LNA-1620AA) from World car Parts Dec. 2014. Cost with postage here to Australia from the UK was AUD$238, very reasonable I thought & happy with product & service.
Whilst unbranded it appears to be new.
Are you sure that is your problem, I would attempt to narrow it down as much as possible.
John Herbert
I know it is a problem, as to if it is the only problem, I am not sure. It is the only problem which a code was set for which was P0102 Mass Airflow circuit low.Guess I will have to install and find out. (My ultragauge also will not read the g/s airflow, all the screen reads for that is "Err")
I am getting battery voltage and ground to the inner and outer wire (the colors escape me atm but if I remember power was the wire in the connecter closest to the radiator and ground closest to the firewall). And was getting only .09volts out of the middle wire which is the signal output to the computer.
If it's any comfort I just bought a used one in the UK 11 pounds delivered (too cheap to ignore they are usually at least 30 pounds) and it worked fine and tested fine. But it sounds like you want new.
Isn't the MAF output reported very low by the Jaguar OBD or am I getting this muddled with something else?
If it's any comfort I just bought a used one in the UK 11 pounds delivered (too cheap to ignore they are usually at least 30 pounds) and it worked fine and tested fine. But it sounds like you want new.
Isn't the MAF output reported very low by the Jaguar OBD or am I getting this muddled with something else?
It ranges from around 1 volt to 5 volts depending on the amount of air passing through the sensor.
Attached is a chart of voltage vs. Kg/s of air
Update: I received the used MAF and installed it about an hour ago. Was able too start up and drive the car home with no problems. The car runs way better but I think there is still a little roughness in it. I'm probably just imagining it though. I know it was running pretty rich and the exhaust smelled pretty bad of unburnt fuel. As well as blowing out some black smoke when we tried to get it started yesterday. The spark plugs may be fouled from the excess fuel that's been running through it. I have an extra set of 6 laying in my garage. When I get back in town, I will be tackling my spark plug seals and valve cover gasket. I will check the spark plugs then.
The exhaust does smell better now with the working MAF and no sign of smoke. Also my ultragauge is reporting a much much better short and long term fuel trim.
Here are pictures of the before and after fuel trims reported by the ultra gauge.
Before
After:<br/><br/>(I got lucky with the short term at zero during the shot, it was trimming between positive and negative)
I found the website for the seller John Herbert was referring to. Will most likely be ordering one soon. Link attached just for future reference.
I just checked everydayxj and growlerparts and no luck there.
Cheers,
Don
Don,
Thank you for the mention.... I have a lot of parts on hand that haven't made it to my site yet. I always encourage people to email for availability.
I have a couple of used MAF sensors for the X300 on hand for less than the $60 ebay price.
It sounds like the issue may be sorted now....
As soon as the cold weather hit here in upstate NY my 2000 xj8 started having problems starting for the first time each day in the morning. It would fire immediately but would not idle high enough to stay running. Engine has never had any starting issues for the 140,000 miles I have put on it over the past 7 years. I installed a MAS that was new, $20 from ebay. Car starts immediately now but does not run quite right -lacks power. MAS air intake temperature reads -40f. Since I know changing the sensor fixed the starting problems I am going to source another brand on ebay. This one is $40. If this doesn't work, then I am going with a new Desno OEM that I found on line for $130
What maintenance can be done to prolong the life of these sensors? I don't like the idea of sending these great cars to the compactor just because one sensor is no longer available.
EZDriver - I have been told that you can clean them with an electronics spray cleaner. I have not had any success with this though. But no worries, I bought a MAS for $100 that worked fine for 5 years. I just replaced it with one that was $40 and the car is working great. I did buy one for $20 that was defective and returned it. If I have further problems I will purchase the OEM Denso unit for $130.
EZDriver - I have been told that you can clean them with an electronics spray cleaner. I have not had any success with this though. But no worries, I bought a MAS for $100 that worked fine for 5 years. I just replaced it with one that was $40 and the car is working great. I did buy one for $20 that was defective and returned it. If I have further problems I will purchase the OEM Denso unit for $130.
Steve
Do you know of anyone that has used the Denso unit on the X300. This design is totally different. I know Denso has a great reputation and I would think that if they sell it for the X300 that it would work.
Chris Sorry it took me so long to post this. I could not find the site. Pretty sure this link is what I found for the OE Denso MAS, but it is $150 not $130. Website is Partsgeek.com
12-20-2015, 07:42 PM
Sourcing a Mass Airflow sensor
