1974 412 airflow meter

steve_1125 · Post by **steve_1125** » Tue Sep 09, 2003 10:21 pm

Solved the air intake boot problem, now I also need to replace the airflow meter part no. 0280 200 001 .

Understand from type4.org that is a 412 only part. Anyone have any suggestions? Can my existing meter be refurbished or repaired? Thanks for your time

raygreenwood · Post by **raygreenwood** » Tue Sep 09, 2003 10:27 pm

What year is your 412? A 72? That would make it a 73. The 412 body style came about after august of 1972. Until about december of 1972...not sure...it should have been D-jet. So yours has a 1.8? That would make it one of the earliest. I don't think the guts were unique. I think the body of the meter on L-jet 412's was unique. Take a look at some of the 1.8 L-jet bus meters. Open the black lid..and look at the part # on the circuit board. Also inspect and measure things. If your flap isstill good...you may be able to swap the guts. Are you positive it was the meter? What were the symptoms? Ray

steve_1125 · Post by **steve_1125** » Tue Sep 09, 2003 10:57 pm

My '74 412 L-Jet is stalling. I thought is was due to a tear in my air intake boot. We cleaned and sealed it as suggested by VW Bill and others below. When it kept stalling I got a second opinion. According to my mechanic, the flaps on the meter are not resetting or are shot and the meter needs to be replaced. Does that make any sense? I can't wait to get my wagon out on the road again! Thanks!

raygreenwood · Post by **raygreenwood** » Thu Sep 11, 2003 4:58 pm

No...not really. If they are getting stuck....sure. But resetting? The flap should be off the stop, when its running...or the fuel pump won't run. It could just need cleaning and some teflon lube on the hinge...or it could have a broken spring inside. Open the black box part and tell us what you see. Ray

steve_1125 · Post by **steve_1125** » Fri Sep 12, 2003 7:10 am

Ray:

That's how my mechanic put it. The bushings seem to be shot. I have to be candid, I am not that mechanical (I am going to get an opinion from another mechanic). Question, I have a lead on another flow meter but the Bosch number ends in 006 instead of 001; do you know what the distinction is? Thanks

raygreenwood · Post by **raygreenwood** » Fri Sep 12, 2003 3:52 pm

I will look. Problem is...you will be hard pressed to find mechanics who know enough about L-jet to actually tell you what is wrong with a particular "part". Its difficult enough finding one who actually can tell you when which part is bad. If its something simple like bushings....replace them. Make them. If you are going to drive a type 4 car....I would get the book and learn to work on it. I don't know of a single mechanic from coast to coast that I have met....well maybe one.....that has enough knowlege about 411/412 to be trusted with decisions concerning parts that cannot be replaced. Yes..L-jet is pretty generic....and a lot of mechanics know it, but most simply know the basic trouble shooting, and know little beynd that as far as repairing of harness or sub-assemblies. Rat

steve_1125 · Post by **steve_1125** » Fri Sep 12, 2003 7:17 pm

Thanks Ray. I am gradually getting more knowledgeable on my 412. Though I consider myself lucky. I have the same mechanic who worked on my '71 411 in the 80's (my folks bought it new when I was a kid). Of course back then getting the parts was easy!

Good news for me, I found a replacement meter. I also learned that the part number ending in 006 is for a beetle. It was in the seller's 412, he must of modified the whole set up with the boot etc.

raygreenwood · Post by **raygreenwood** » Sat Sep 13, 2003 7:43 am

I wouldbet that iternally, the meters are nearly identical. A quick way to find out is to inspect the circuit board inside the black box area for a part #. It will probably turn out to be the same as the 001. It was not uncommon for one engine configuration to have simply a different outer housing and level of adjustment for a part that is actually the same internally. Ray

vwbill · Post by **vwbill** » Sat Sep 13, 2003 8:09 pm

Hey I just got a catelog from JC Witney(www.jcw.com/vw) page 37 of cat #82J-09 has a listing for a air flow meter for a 1974 type 4. AHD492185P $169.95. Dont know if it really is available but its listed. Made by Python Ind. Reman. 1 year warranty. Good luck !! Wahoo Bill

steve_1125 · Post by **steve_1125** » Sat Sep 13, 2003 8:59 pm

Wow! I have had JC Whitney bookmarked for years and never saw that part. Hopefully it is new and there is a trend for more companies making aftermarket parts?! Coincidentally I found a used one in good condition late yesterday. Went to Interstate in San Diego, interstateusedparts.com. A very helpful group of people. So too was Eric at bughaus.com. And of course so too are you guys on this forum. I greatly appreciate your input and help. Thank you! Steve

alsehendo · Post by **alsehendo** » Sun Sep 14, 2003 2:33 am

I used a complete L-Jet from a 80 Vanagon $80--but the throtal body plenum are original. Seems to work fine. Air cleaner is modified IDF cleaner. Maybe ray could articulate the diffrences between the various L-Jets.

Chris Hobbs · Post by **Chris Hobbs** » Wed Sep 17, 2003 8:24 pm

Steve, if you would like to do some simple air flow meter troubleshooting on your own, or just read up on the Bosch L-Jetronic FI system in general, two good sources of info are at http://www.conservatory.com/vw/manuals_nyx/ and at http://www.type2.com/bartnik/tech1.htm. For the latter, scroll down to the section on Bosch L-Jetronic Fuel Injection and there are links to pages describing most of the FI components in detail, with color pictures. That was extremely helpful to me when I was first trying to find my way around the 412 engine bay.

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1974 412 airflow meter

1974 412 airflow meter

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