Date: Tue, 25 Feb 2014 14:25:41 -0500
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Engine Starting Problem
In-Reply-To: <CACK29cnu6_ChVd16QZSSNjiM_gUU+s=g8Jr-7FJTX0BYrWSTmQ@mail.gmail.com>
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Intermittent problems are often elusive. Will it start reliably with the AFM
disconnected? If yes then you do have a mixture control issue and the sensor
being disconnected is helping get past it. I would look for massive vacuum
leaks and wiring issues. Except for the O2 sensor which is a "consumable",
it is very rare for any of the other sensors to go bad. Again, the
connectors and wiring is more often the real problem.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Steven Shelton
Sent: Tuesday, February 25, 2014 2:12 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Engine Starting Problem
I meant that the engine turns over and over but it will not start/run. I
checked the intake air sensor (Bentley 1999 edition pg 24.28):
2-3 556
6-9 557
6-22 2697@18 degrees C
2-3 and 7-9: ohms change as I moved the sensor plate
Is this a definitive test or could there still be something wrong with
intake air sensor?
On Tue, Feb 25, 2014 at 1:59 PM, Dennis Haynes
<d23haynes57@hotmail.com>wrote:
> Cranking and starting are two completely different issues. The starter
> will crank (turn)the engine over if you removed the complete fuel
> delivery system and put it out to the garbage.
> Check the wiring on the back of the starter. The solenoid trigger wire
> may be loose and you're working near there is making or breaking that
> connection.
>
> Dennis
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
> Behalf Of Steven Shelton
> Sent: Tuesday, February 25, 2014 1:18 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Engine Starting Problem
>
> OK, as I said above, the engine would not crank at all, even after
> returning to it using a charged battery the next day. As soon as i
> removed the AFM, even with the #1 spark plug removed, the engine
> cranked right up.
> I checked the ECU connector, with the following results:
>
> 2-7 3213 ohms@16 degrees C
> at this temperature the reading should be 3000 ohm to 3500 ohm.
> I also checked at the temp 2 sensor, it was 3178 ohm.
>
> Other readings were:
> 1-7 10.64 V
> 5-7 infinity
> 6-19 558 ohm
> 7-25 0 ohm
> 11-7 14.9 ohm
> 12-7 15.1
> 14-6 3154 ohm
> 15-19 555 ohm at rest, it moved up when I moved the plate
>
> Does this mean conclusively that the temp 2 sensor is OK? Any
> suggestions on what to try next?
>
>
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