Date: Tue, 6 Jul 2010 23:34:40 -0700
Reply-To: neil n <musomuso@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: neil n <musomuso@GMAIL.COM>
Subject: Re: adding resister to center 1.9 coolant temp gauge?
In-Reply-To: <4c341e72.e9c9e50a.2aee.ffff8bdc@mx.google.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi David.
Going on a somewhat sketchy memory, but the OEM Luxembourg was within
tolerance, but the used and new FLAPS, weren't in spec at mid temps.
<searches his gmail> Ironically, the warm start issue still happens.
I suspect an intermittent fault at the purge valve. But now I'm
OT.....
Here's what I posted a while back:
"Hi all.
On my Vanagon w/Jetta 2.0, I was having intermittent warm start
problems that would cause engine to take 5+ cranking sessions to
start. When started, it was sometimes rough, but would always feel
"flooded" when trying to start it. Recently, it would also "hunt" at
idle when restarted in hotter ambient temps. Being a DIY conversion,
was concerned problem might be due to an intermittent wiring flaw or
?. Seems not.
The suspect temp sensor bench tested out of spec mid range. This
coincided with what I saw at coolant temp gauge when hard to start
warm. In hindsight, this made total sense. The sensor was very likely
telling the ECU to make the mix too fuel rich (Thanks Scott for the
tip on that)
Currently a used VW branded temp sensor is installed. No warm start
problems so far, and no more error codes found in the OBD.
Posting this as the ECU portion of sensor is basically the same as the
ones used in the WBX engines. Also posting as I tested a new FLAPS
"Standard" made in China sensor. Bought this as VW wanted $54 Cnd.,
had to order it, and to my mind couldn't guarantee it would be OEM.
Besides. Figured I'd test something I'd likely stand a better chance
of finding out in the middle of nowhere.
Results below. Seems the new sensor is close to out of spec mid-upper
range. This might be due to my test methods though.
Neil.
No Name VW FLAPS "Standard" brand
21C 2900 Ohms 2300 Ohms 2500
27 2440 1920 2000
32 1940 1550 1600
38 1656 1300 1200
43 1360 1070 970
49 1130 890 780
54 932 750 620
60 780 640 510
66 666 530 420
71 555 450 350
77 470 380 290
82 400 325 247
88 337 278 222
93 286 240 215
100 217 194 204
"
On Tue, Jul 6, 2010 at 11:21 PM, David Beierl <dbeierl@attglobal.net> wrote:
> At 02:19 AM 7/7/2010 Wednesday, neil n wrote:
>>
>> and a new FLAPS brand sensor. They all gave slightly different
>> readings at various temps. The Luxembourg being closest to the graph
>> in the A3 Bentley This is for my Jetta swap, but IIRC, graph is the
>> same for the WBX.
>
> Were they within the specified tolerance on the graph?
>
> Yrs,
> d
>
--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"
http://tubaneil.googlepages.com/
http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines