Date: Sun, 20 Jul 2003 10:44:59 -0700
Reply-To: Mike Miller <mwmiller@CWNET.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mike Miller <mwmiller@CWNET.COM>
Subject: Re: Idle problem/digitool readings
In-Reply-To: <BB3F5215.890%cmathis@houston.rr.com>
Content-type: text/plain; charset="US-ASCII"
Throttle position switch is bad. I'll let you know if that's the only
problem as soon as I get it replaced. If it can be replaced.
Mike
On 7/19/03 5:52 PM, "Chuck Mathis" <cmathis@HOUSTON.RR.COM> wrote:
> Mike,
>
> On my '85 the FP (fuel pump) light stays steady and the FI (fuel injectors)
> light does flicker -- so fast at anything above idle that it appears steady.
> What is the TP (throttle position switch) light doing? It should be on at
> idle, go off as soon as you give it gas and come back on at full throttle.
> The readings you are seeing look pretty close to normal except that the AFM
> at idle when the engine is warm seems a little high. That can be explained
> by your 1200-1400 rpm idle though.
>
> Are you working with a 1.9 or 2.1? Some things I would look at on my 1.9 if
> it were doing what yours is are the fuel pump relay in the black box above
> the coil, the fuel pump itself, idle stabilizer, and the throttle position
> switch. I'd start with the fuel pump related issues because that light
> should stay steady when the engine is running.
>
> Chuck
> '85 Wolfsburg Westy - 'Roland the Road Buffalo'
>
> on 7/19/03 1:48 PM, Automatic digest processor at LISTSERV@GERRY.VANAGON.COM
> wrote:
>
>> Date: Sat, 19 Jul 2003 11:46:27 -0700
>> From: Mike Miller <mwmiller@CWNET.COM>
>> Subject: Idle problem/digitool readings
>>
>> Volks,
>>
>> Problem: Van wouldn't hold idle, drops to 400 or so and sometimes dies,
>> usually dies if AC on
>>
>> Things done: Tune up, plugs, distributor cap/rotor, air filter etc.
>> started from scratch with idle per Bentley.
>>
>> results: Couldn't get a stable idle at 1000 or so. Engine would drop to
>> 400 or so when the idle approached 1000. Idle stable at 12-1400
>>
>>
>>
>> Put in different ECU with digitool. Ran ok with AC on or off, idle set at
>> 12-1400.
>>
>> EXCEPT misses like crazy at around 3000 in any gear.
>>
>> Digitool readings:
>>
>> Cold engine No AC on
>>
>> Temp 1.7,7 temp 2 .67, O2 .41, AFM 1.92 Batt 13.14
>> Well finally got the digitool hooked up
>>
>> Cold with AC on the F1 light flickers other readings the same
>>
>> Hot engine:
>>
>> AC on
>>
>> FP light flickers, FP light on
>>
>> Temp 1 .61, temp 2 .07, O2 .10-.77, AFM 1.57-1.81, Batt 12.57
>>
>> AC off
>>
>> FP light flickers
>>
>> Temp 1 .49, Temp 2 .07, O2 .18-.67, AFM 1.84, Batt 12.88
>>
>> Driving
>>
>> FP light on
>>
>> Any of this information mean anything to anyone?
>>
>> Mike
>
>
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