75 is a fine deal ...
and even if that isn't 'it' ..you want a good spare anyway.

I value them higher than that personally.

On 10/20/2014 7:50 AM, Stuart MacMillan wrote:
> I can buy one used here for $75 and that's probably it, I've just been
> chasing wild gooses, but there may well be other issues, but not the ECU!
>
> Stuart
>
> -----Original Message-----
> From: OlRivrRat [mailto:OlRivrRat@comcast.net]
> Sent: Sunday, October 19, 2014 10:57 PM
> To: Stuart MacMillan
> Cc: vanagon@GERRY.VANAGON.COM
> Subject: Re: Weird idle problem continues
>
>                  Stuart
>
>                  I recently encountered an H2OBoxr that did not want to
> IdleDown ~ don't remember how high the Revs were ~
>
> Don't think as high as 3K ~ Maybe closer to 2K ~ & the culprit turned out to
> be the IdleStabilizerControlModule/Relay ~ Is
>
> there any chance you get an "local loaner" IdleStabilizerControlModule to
> try ~
>
>
> ORR ~ DeanB
>
>
>
>
>
> On 19 Oct , 2014, at 10:12 PM, Stuart MacMillan wrote:
>
>> I found a local loaner ECU and it didn't change anything.  Now diving
> deeper.  It has a hot 1" spark, but I'll measure the coil tomorrow and take
> a close look at the AFM and hall sensor.
>> Stuart
>>
>> -----Original Message-----
>> From: Dennis Haynes [mailto:d23haynes57@hotmail.com]
>> Sent: Sunday, October 19, 2014 7:41 AM
>> To: 'Stuart MacMillan'; vanagon@GERRY.VANAGON.COM
>> Subject: RE: Weird idle problem continues
>>
>> It is possible that you have a bad ECU or Hall sensor. I recently had a
> van with these symptoms and it turned out to be the coil. Take the coil out
> and test it with an ohmmeter. From the center post to the _ terminal should
> be ~4,500 ohms. The bad coil I had appeared OK at 3,500 ohms, (not open or
> shorted) but that was the problem. It had a week spark.  That can also
> confuse the idle controller.
>> Dennis
>>
>>
>> -----Original Message-----
>> From: Stuart MacMillan [mailto:stuartmacm@gmail.com]
>> Sent: Saturday, October 18, 2014 6:17 PM
>> To: 'Dennis Haynes'; vanagon@GERRY.VANAGON.COM
>> Subject: RE: Weird idle problem continues
>>
>> With the ISV connected. Unplug it and it won't idle at all, even after a
> few minutes of holding down the pedal.  Plug it in, and it's up to 3500 rpm,
> 2000 with the T2 disconnected.  T2 voltage drops from 4.98 to 1 volt when I
> plug it in with the engine barely warm, measured with my Fluke meter by
> sticking the probe into the back of the connector. Bentley shows resistance
> dropping with increasing temp. There are two wires coming to the voltage
> terminal, and one ground wire from the other.
>> With ISV plugged in and pinched off it won't idle. Adjusted throttle stop
> per Bentley.  No matter what I've tried it will not idle, or idles at 2000
> to 3500 rpm depending on whether the T2 sensor is connected.
>> This happened literally over night after driving the well-running van 270
> miles home.  The next day all this appeared.
>> I did find a very weak alternator, and the battery was run down to 25% the
> next day. It would crank but not start, but started with a jump.  Maybe that
> did in the ECU.
>> Something is sending the wrong signals obviously, but this engine is
> pretty clean, unmodified, and has been professionally serviced its whole
> life, which has been in the northwest.  No cut & spliced wires, cut
> sheathing, corroded connectors, added equipment, accidents, etc., so I don't
> think it's a wiring problem.
>> Just for fun I popped the ECU plug and it looks fine.  Situation is the
> same plugging it back in.  At proverbial wits end.  I have the TA version
> ECU, are they know to be problematic?
>> Van Cafe wants $225 for a rebuilt ECU.  I'm tempted to order one right
> now!
>> Stuart
>>
>>
>> -----Original Message-----
>> From: Dennis Haynes [mailto:d23haynes57@hotmail.com]
>> Sent: Saturday, October 18, 2014 2:04 PM
>> To: 'Stuart MacMillan'; vanagon@GERRY.VANAGON.COM
>> Subject: RE: Weird idle problem continues
>>
>> Is that idle with the stabilizer valve connected? You need both fuel and
> air . Again,  start by getting it to run/idle with the valve disconnected,
> maybe even pinch off or block the hoses. Check the voltage at that plug
> terminal with the sensor connected and disconnected. There must be a
> difference. If not you have a wiring issue or a bad input on the ECU. If
> fast idle with idle valve blocked you have a vacuum leak somewhere or the
> throttle is partly open.
>> Dennis
>>
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Stuart MacMillan
>> Sent: Saturday, October 18, 2014 4:51 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: Weird idle problem continues
>>
>> Checked the T2 sensor, and it's 1500 ohms @ 35 C, right what the Bentley
> says it should be. Sensor in AFM is also spot on.  That T2 connector is
> clean as a whistle, contacts inside are not broken or corroded either.
>> But remember, it idles at 2000 rpm with it unplugged!  Something is
> dumping fuel in, and it must be a bad ECU unless you can think of something
> else.
>> Stuart
>>
>> -----Original Message-----
>> From: Dennis Haynes [mailto:d23haynes57@hotmail.com]
>> Sent: Saturday, October 18, 2014 1:23 PM
>> To: 'Stuart MacMillan'; vanagon@GERRY.VANAGON.COM
>> Subject: RE: Weird idle problem continues
>>
>> The ECU thinks the engine is really cold. Try changing the connector. It
> is the same as for the injectors except for color. A good auto parts store
> will have the connector and pigtail wires, maybe the Help or Cal-Term board.
> GM uses the same connectors.
>> Dennis
>>
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Stuart MacMillan
>> Sent: Saturday, October 18, 2014 4:20 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: Weird idle problem continues
>>
>> I've got 4.9 volts, and 0.02 volts on the connectors.  Fuel pressure is 30
> psi and no leaking at the regulator vacuum connection.
>> All hooked up and the same situation--hard start, won't idle, 30 seconds
> later revs up to 3500 rpm and stays there.
>> I give up.  At least I have a good shop close by.
>>
>> Stuart
>>
>> -----Original Message-----
>> From: Dennis Haynes [mailto:d23haynes57@hotmail.com]
>> Sent: Saturday, October 18, 2014 1:05 PM
>> To: 'Stuart MacMillan'; vanagon@GERRY.VANAGON.COM
>> Subject: RE: Weird idle problem continues
>>
>> High idle and timing defaulted is normal when temps is disconnected after
> engine running. That is part of the procedure to set the timing. Reconnect
> the snsor to then set the idle speed.
>> Dennis
>>
>>
>>
>>
>> -----Original Message-----
>> From: Stuart MacMillan [mailto:stuartmacm@gmail.com]
>> Sent: Saturday, October 18, 2014 4:03 PM
>> To: 'Dennis Haynes'; vanagon@GERRY.VANAGON.COM
>> Subject: RE: Weird idle problem continues
>>
>> Thanks Dennis, that might actually be cheaper than taking it to a shop!
>>
>> I'll go check that now, but it still idles at 2000 rpm with temp 2
> disconnected.
>> Stuart
>>
>> -----Original Message-----
>> From: Dennis Haynes [mailto:d23haynes57@hotmail.com]
>> Sent: Saturday, October 18, 2014 12:51 PM
>> To: 'Stuart MacMillan'; vanagon@GERRY.VANAGON.COM
>> Subject: RE: Weird idle problem continues
>>
>> Where are you located again? Do you need me to fly there to fix it? Only
> kidding.
>> The hard start and idle problem is probably related. If it is flooding
> look at the Temp 2 sensor. The original sensors rarely go bad. What does go
> bad is the connector and the wiring to it. And then there is the ground
> connection for it.  This sensor is used for both the ECU to control starting
> mixture, warm up mixture, when to go into O2 sensor operation and some
> ignition timing trim. It is also used by the idle stabilizer to modify idle
> speed for starting and warm up operation. There are also inputs for the AC
> and power steering.
>> The temps sensor gets a signal off of the ECU and sinks it to the chassis.
> As the sensor warms up the resistance goes down increasing current flow
> which reduces the voltage at the ECU. Any high resistance in this path
> leaves a high voltage making the ECU and idle control unit think it is like
> 40 below. Yes it will run rich and if it does run idle high.
>> Key on engine not running you can use a voltmeter to test the connections.
> On the ECU side of the sensor you need to see less than 5 volts connected,
> between the connector and chassis). On the ground side needs to be real
> close to "0" If you have voltage on both sides or much above "0" on the
> ground side you have a bad ground path. If 5 volts on one side then you have
> a bad connection to the sensor.
>> Hope this helps.
>>
>> Dennis
>>
>>
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Stuart MacMillan
>> Sent: Saturday, October 18, 2014 3:13 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: Weird idle problem continues
>>
>> I would, but son is tapped out for now.  Need to get a year or two out of
> this one!
>>
>>
>> From: Don Hanson [mailto:dhanson928@gmail.com]
>> Sent: Saturday, October 18, 2014 12:05 PM
>> To: Stuart MacMillan
>> Cc: vanagon@GERRY.VANAGON.COM
>> Subject: Re: Weird idle problem continues
>>
>>
>>
>> Give in, Stuart....You know you are wanting a different motor...Do it now.
>>
>>
>>
>> On Sat, Oct 18, 2014 at 12:02 PM, Stuart MacMillan <stuartmacm@gmail.com>
> wrote:
>> Okay,
>>
>>
>>
>> Today it was very hard to start, much cranking with foot to floor to
> minimized flooding.  Started, barely  ran but 30 seconds later runs up to
>> 3000 rpm and stays there.  Warmed it up for a couple of minutes.
>>
>>
>>
>> Unplugged O2, Temp2, and idle control power plug.  Same hard to start
> condition, but it went to 2000 and stayed there.  Checked the timing and it
> was a bit advanced but steady, so I adjusted that.
>>
>>
>> Hooked everything back up and still hard starting, but went right up to
> 3500 rpm. Gave up.
>>
>>
>> This is not a problem with the idle control circuit.  What's left?  AFM?
>> ECU? Other?
>>
>>
>>
>> About ready to have it towed to a shop where they can substitute parts
> they have lying around, but that would be painful in so many ways.
>>
>>
>> Stuart
>>
>>