Date: Wed, 27 Jun 2012 14:41:31 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: slight hesitation but doesn't happen on consistant basis
In-Reply-To: <CAB2Rwfhn2MtKziYz7db52b6J8cdFUikeD0m-kkPu_=1zduBjTw@mail.gmail.com>
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Hi all...
It's very natural to try to identify 'when it does it.'
And I will also say this ....I've had customers want to tell me every
little detail about what stop sign it does it by, on which days, or
whatever.
Aside from basic information like 'hot or cold ? ' and is the fuel in
it good etc..
most of the time ( and some people want to spend a long time telling
about each and every time it hiccuped or whatever ) I just say ..
get me the car, tell me the symptoms you are aware of, the keys, and a
phone number.
In other words ..some 'pre-info' is great, like how long they've owned
it and so on.
The real work starts with inspecting things though.
Some people don't even 'look' ..they don't even eyeball the engine as a
first step. Sometimes there is a hugely obvious thing out of place.
Point is , the real work starts with careful inspection, perhaps some
diagnostic tests etc.
AFM as a source of hesitation ....possible all right. I'd check more
basic things first I think.
On 6/27/2012 11:02 AM, neil n wrote:
> Hesitates? Bucks? Dont' get me started..... < grin >
>
> Did this symptom start suddenly or has it been re-occuring over time?
>
> Did you recently purchased this Vanagon?
>
> It takes time, but pick a test route, use this same route every time you
> test your rig. Make note of engine temp at start and finish and note where
> hesitation happens. Try to duplicate this issue.
>
> I would check other things first, but if you suspect the AFM......
>
> Cleaning the resistive strip is an easy place to start. I used 99%
> Isopropyl and Q-tips. And with a magnifying lens, you can inspect the
> resistive strip for excessive wear. Take your time removing the plastic
> cover. There are spots you can lever it off. Just work your way around bit
> by bit. It is likely best to work on this part with air cleaner-AFM removed
> from the vehicle.
>
> Clean the OEM adhesive from cover and AFM body well. I found that a smear
> of silicone along outside surfaces where these parts meet was sufficient to
> re-secure the cover. That way I was sure no excess silicone boogers would
> end up inside.
>
> Neil.
>
>
> On Wed, Jun 27, 2012 at 9:29 AM, marc rose <mrose1028@gmail.com> wrote:
>
> 90 Carat 2.1. As you may have read i am a few weeks away from first road
>> trip and just over the past two days my wife has noticed a slight
>> hesitation when she tries to acelerate. It doesn't seem to coincide with
>> engine being cold and it does not hesitate every time. I tried and it only
>> did it to me once. You press on the gas and it acts lke it is going to die
>> and then, boom, back to life like nothing is wrong. Not sure what to
>> try??? Fuel filter, capacitor on the AFM, fuel pressure regulator....Help
>> Me.
>>
>> Thanks!!
>>
>> Marc
>>
>
>
> --
> Neil n
>
> 65 kb image Myford Ready For Assembly http://tinyurl.com/64sx4rp
>
> '88 Slate Blue Westy to be named.
>
> '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/
>
> Vanagon VAG Gas I4/VR Swap Google Group:
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>
| 
