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-   -   rough idle a4 1996 2.8 12v, now hesitates during acceleration? (http://www.autobanter.com/showthread.php?t=240061)

Devious! February 23rd 08 03:18 AM

rough idle a4 1996 2.8 12v, now hesitates during acceleration?
 
Nightmare car from the start. Had rough idle prob for a year now,
mostly in cold. Through tons of $ at her, turned out to be idle
valve. Doh! All vacuum lines,breather hose, redone, new TB. Now
after two weeks of smooth sailing, idle is extremely irradic, and
now hesitates while accelrating. Audible "ticking" sound from
bonnet, is this a distributor/coil problem? Also put in new plugs,
no effect, but plug wires look old.

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Kevin McMurtrie February 23rd 08 06:19 AM

rough idle a4 1996 2.8 12v, now hesitates during acceleration?
 
In article om>,
(Devious!) wrote:

> Nightmare car from the start. Had rough idle prob for a year now,
> mostly in cold. Through tons of $ at her, turned out to be idle
> valve. Doh! All vacuum lines,breather hose, redone, new TB. Now
> after two weeks of smooth sailing, idle is extremely irradic, and
> now hesitates while accelrating. Audible "ticking" sound from
> bonnet, is this a distributor/coil problem? Also put in new plugs,
> no effect, but plug wires look old.
>
> ----------------------------------------------
> Posted with NewsLeecher v2.0 Beta 5
> * Binary Usenet Leeching Made Easy
> *
http://www.newsleecher.com/?usenet
> ----------------------------------------------


An ignition problem gets worse with compression. It would run well at
idle but shake at high throttle with low RPM.

Did anything get gunked up while you had a faulty idle valve?

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tpow February 23rd 08 08:00 AM

rough idle a4 1996 2.8 12v, now hesitates during acceleration?
 

"Devious!" > wrote in message
ng.com...
> Nightmare car from the start. Had rough idle prob for a year now,
> mostly in cold. Through tons of $ at her, turned out to be idle
> valve. Doh! All vacuum lines,breather hose, redone, new TB. Now
> after two weeks of smooth sailing, idle is extremely irradic, and
> now hesitates while accelrating. Audible "ticking" sound from
> bonnet, is this a distributor/coil problem? Also put in new plugs,
> no effect, but plug wires look old.
>
> ----------------------------------------------
> Posted with NewsLeecher v2.0 Beta 5
> * Binary Usenet Leeching Made Easy
> * http://www.newsleecher.com/?usenet
> ----------------------------------------------
>


it does make us wonder about skilled technicians........they just take one
bit out and put another bit in. And even if it does not fix the problem we
have to pay for it. They do this most probably knowing the right bit has yet
to be changed.

all I can add is fit a new set of leads................you have spent plenty
what's a couple quid more.



dave AKA vwdoc1[_2_] February 23rd 08 06:34 PM

rough idle a4 1996 2.8 12v, now hesitates during acceleration?
 
Can't you get someone to read what is happening to the engine with a vag-com
tool?

If the wires are bad then there should be misfires!
Also read the coolant temperature in the ECM.


"tpow" > wrote in message
...
>
> "Devious!" > wrote in message
> ng.com...
>> Nightmare car from the start. Had rough idle prob for a year now,
>> mostly in cold. Through tons of $ at her, turned out to be idle
>> valve. Doh! All vacuum lines,breather hose, redone, new TB. Now
>> after two weeks of smooth sailing, idle is extremely irradic, and
>> now hesitates while accelrating. Audible "ticking" sound from
>> bonnet, is this a distributor/coil problem? Also put in new plugs,
>> no effect, but plug wires look old.
>>
>> ----------------------------------------------
>> Posted with NewsLeecher v2.0 Beta 5
>> * Binary Usenet Leeching Made Easy
>> * http://www.newsleecher.com/?usenet
>> ----------------------------------------------
>>

>
> it does make us wonder about skilled technicians........they just take one
> bit out and put another bit in. And even if it does not fix the problem we
> have to pay for it. They do this most probably knowing the right bit has
> yet to be changed.
>
> all I can add is fit a new set of leads................you have spent
> plenty what's a couple quid more.
>




Dave[_71_] April 17th 15 02:18 PM

rough idle a4 1996 2.8 12v, now hesitates during acceleration?
 
replying to Devious!, Dave wrote:
> yeah wrote:
>
> Nightmare car from the start. Had rough idle prob for a year now,
> mostly in cold. Through tons of $ at her, turned out to be idle
> valve. Doh! All vacuum lines,breather hose, redone, new TB. Now
> after two weeks of smooth sailing, idle is extremely irradic, and
> now hesitates while accelrating. Audible "ticking" sound from
> bonnet, is this a distributor/coil problem? Also put in new plugs,
> no effect, but plug wires look


Try spraying the plug wire with WD40 if it goes away then it is moisture in
the wires. Replace the wires especially if they are cracked apart.


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