Date: Sun, 26 Aug 2012 17:52:00 +0000
Reply-To: Skip <skiplaubach@COMCAST.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Skip <skiplaubach@COMCAST.NET>
Subject: Re: Poor Hot Start Discovery - midway through solution
In-Reply-To: <503A49D4.2010203@gmail.com>
Content-Type: text/plain; charset=utf-8
I also thought that by stepping on the accelerator, that would inhibit the amount of fuel being pushed into the fuel injectors, thereby reducing the impact of "flooding". This action (by me) actually helped in cases where the van would not start when the engine was hot. Though the engine would turn over alot, if I depressed the accelerator that engine would finally begin running.
What is correct?
OK, back from town. Recall this morning, I measured ohms at Temp II sensor on cold engine (2,000 ohms) and warm engine (220 ohms). Then I drove to town (about six miles) in an effort to get the engine "hot". Ambient air temperature is 78 degrees. At town I turned the engine off twice (for fuel fill and van wash). Both times it started right up.
Conclusions: 1. By fiddling with the Temp II connector this morning, it decided to work when the engine is hot, or 2. I didn't get the engine hot enough, or ambient temperature not being in the nineties allowed the radiator to keep the engine at a less than really hot temperature. In other words, I'm not totally convinced that my Temp II sensor is the root cause of this "hot/no start" issue...but I'm thinking maybe it is.
What say you?
Also, my whole theory here is that the Temp II sensor (when the engine is hot) sends a "low ohm signal" to the ECU, and the ECU instructs the injectors (via the relay in the black box) not to administer (too much) fuel to the engine, thereby preventing "the engine gets itself flooded when "hot starting".
Is this correct?
Thank you.
Skip
'84 Digijet
----- Original Message -----
From: Rocket J Squirrel <camping.elliott@GMAIL.COM>
To: vanagon@GERRY.VANAGON.COM
Sent: Sun, 26 Aug 2012 16:07:48 -0000 (UTC)
Subject: Re: Poor Hot Start Discovery - midway through solution
"Also do not step on the accelerator pedal when starting, this causes
flooding."
I thought the ECU controlled how much fuel the injectors spray, not the
pedal. Does the ECU permit flooding?
--
Jack "Rocket j Squirrel" Elliott
1984 Westfalia, auto trans,
Bend, Ore.
On 08/25/2012 08:58 PM, Alfred Bagdan wrote:
> I had the same problem a long time ago. The problem was
> intermittent and hard to diagnose. I replaced the TempII sensor and
> that fixed it. Also do not step on the accelerator pedal when
> starting, this causes flooding.
[snip]
