Itinerant Air-Cooled

Hi, crawling out from under my rock for a minute...

The bus had been having a cold start problem that was getting progressively worse. It would start up great, run a minute or two, then stall. It would then require a couple minutes (2-5) before it would start again, at which point it would run fine. Then it started running a bit worse after the restart and I knew I had to sort it out.

I did all the usual things. Made sure my ignition connections were shiny clean and snug (they were ok). Eradicated any vacuum leaks (one minor one in the FI breather tube). Set valves (fine), checked timing (fine), new points/condenser (it was time). The problem was unchanged.

I disconnected the AAR and checked its function. It was fine.... So, last on my list (because I was sure it was fine) was the Temp Sensor II. I went to remove it and noticed it was loose. Removed it, it tested fine. Replaced and sugged it down and BANG! I got my bus back! It does idle a bit slow (stalling occasionally) when cold, but the cold start problem is gone and it feels much better to drive.

Thought I would share. Gotta get here more often, I miss reading all the adventures folks are having.

Anyway, we'll be camping in the bus a few times this summer, including a trip to Mammoth Caves in Kentucky. Maybe I'll get to that body work some day.

DJ Roberts

Good job troubleshooting.

and just found out temp sensor ii is no longer available. that WILL be fun when mine dies. it's an important part ... hopefully someone will make them.

An NTC thermistor should be able to handle the requirements of L-Jet. I'll play around with some ideas before I lose access to my electronics division at work next week.

Some companies sell threaded options, but I'm thinking a ring-terminal style would be just as easy, considering there are FAR more options availabel from the market right now. We'll probably end up with a $4 replacement that you slip onto an engine case screw and use a second nut.

Robbie

deschutestrout wrote:and just found out temp sensor ii is no longer available. that WILL be fun when mine dies. it's an important part ... hopefully someone will make them.

Mark, Bus Depot wants $99.00 for the damn thing? What is wrong with them? Start learning to shake the trees a little. You might get an unexpected coconut.
Colin
(I just ordered four from Pelican Parts for $95.00)

fcp euro

VW Cylinder Head Temperature Sensor - Bosch 0280130012 | FCP ...
https://www.fcpeuro.com/.../vw-engine-c ... -028013001...
$27.99 - ‎In stock
VW Cylinder Head Temperature Sensor - Bosch 0280130012. Bosch is a global leader in the engineering and manufacture of both OEM (Original Equipment ...

Pelican Parts

0-280-130-012-OEM Ships in 2-5
Business Days

Engine Temp.Sensor,
Brand: Genuine Porsche
[More Info] [Choose alternate brand]
$23.75

EBAY

New Bosch Engine Cylinder Head Temperature Sensor 0280130012 ...
www.ebay.com › ... › Car & Truck Parts › Engines & Components › Other
eBay
$36.66 - ‎In stock
New Bosch Engine Cylinder Head Temperature Sensor 0280130012 022906041A in eBay Motors, Parts & Accessories, Car & Truck Parts | eBay.

Amskeptic wrote:

(I just ordered four from Pelican Parts for $95.00)

Interesting. Let us know when you get them if they are the correct part. When I do a direct search of that part# it comes up at that price but when you go into the Porsche section and look it up the only one they show in stock for a '74 2.0ltr 914 is a Bosch unit for $81!

http://www.pelicanparts.com/catalog/Sup ... .htm#item2

Westy78 wrote:

Amskeptic wrote:

(I just ordered four from Pelican Parts for $95.00)

Interesting. Let us know when you get them if they are the correct part. When I do a direct search of that part# it comes up at that price but when you go into the Porsche section and look it up the only one they show in stock for a '74 2.0ltr 914 is a Bosch unit for $81!

They are being shipped to Atlanta. Do the look-up by part number only. Who knows if car nameplate searches go to different price lists, you know? I just put in your VW Type 3 D-Jet part number and got socked with the $81.00 ea. It asked me if I knew it would fit my "1974 Porsche Targa"?

http://www.pelicanparts.com/catalog/Sup ... .htm#item2

Name: Colin Kellogg
Email: 78vw2000@earthlink.net
Phone: 6784775266
Order Total: $104.99
Date Ordered: Mon 7/4/2016
06:55:13 AM
Package 1 Expected Delivery: Thu 7/14/2016
Shipping Method: Ground Delivery Expected Ship Date: Fri 7/8/2016
Item Name Item Price Quantity Item Total
Engine Temp.Sensor,
Brand: Genuine Porsche
Part #: 0280130012OEM
$23.75 4 $95.00
7/4/2016 Pelican Parts Online Shopping Cart
https://www.pelicanparts.com/cgibin/
smart/Smart.
cgi?ShopCart_2014=Y 2/2
Subtotal: $95.00
Shipping: $9.99
Total: $104.99

They are all the same for Djet or Ljet except the uber rare 73 914 2.0L -017 CHT...

Amskeptic wrote:
Mark, Bus Depot wants $99.00 for the damn thing? What is wrong with them? Start learning to shake the trees a little. You might get an unexpected coconut.
Colin
(I just ordered four from Pelican Parts for $95.00)

How did your tree shaking work out? One of the links was broken, the only I could find on eBay was over $100, ordered 2 from Pelican, two days later get an email that they are NLA and they refunded my money. Pretty much got hit on the head by the falling coconut.

Try AutoHausAZ.com

They typically have weird names for parts. I think the last TSII I ordered had "coolant sensor" listed, but the part number was still the same. Their link system is also broke, so I can't copy paste.

Robbie

Pelican Parts ran my card, posted me a shipping notice, then emailed me that the part is nla.
Colin Phooey

Amskeptic wrote:Pelican Parts ran my card, posted me a shipping notice, then emailed me that the part is nla.
Colin Phooey

You too? We'd better be watching our cards.......

I'm working on sourcing an alternative that would be within 10-20ohms of Ratwell's chart. What is the thread of the hole each year? Didn't earlier models have a slightly different spot? I can not find the answers from my phone right now.

Robbie

asiab3 wrote:I'm working on sourcing an alternative that would be within 10-20ohms of Ratwell's chart. What is the thread of the hole each year? Didn't earlier models have a slightly different spot? I can not find the answers from my phone right now.

Robbie

Hippiewannabe bypassed the TS II by sticking in a Radio Shack potentiometer right in the dash with a 1970's AM radio looking knob, 0 ohms to 5,000 ohms, has a great time with it. Says he just raises the resistance when the head temps go up, and dang if they don't come back down.
Colin

Located a few of the CHTs' and thermostats...