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A3 Jetta hard to start

 
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Randolph

External


Since: Dec 13, 2003
Posts: 186



(Msg. 1) Posted: Tue Sep 19, 2006 4:55 am
Post subject: A3 Jetta hard to start
Archived from groups: rec>autos>makers>vw>watercooled (more info?)

A friend of mine is having problems with her 1998 Jetta GL (Automatic
transmission). Over the past few weeks it has gotten progressively more
difficult to start this car in the morning. The starter will crank at
normal speed, so no lack of battery power, but it takes a lot of
cranking and several attempts before the engine starts.

Once the engine is running it runs just fine, no hesitation, no loss of
power etc.

Restarting the engine a couple of hours after it was turned off is no
problem at all.

Any insight into what this could be? I suspected a leaky injector, and
suggested that she try starting the car at half throttle tomorrow
morning to see if this helps.

Any and all suggestions will be appreciated.

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IR

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Since: Jul 04, 2005
Posts: 35



(Msg. 2) Posted: Tue Sep 19, 2006 3:51 pm
Post subject: Re: A3 Jetta hard to start [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

We've got the exact same car and had a similar prob. except when
it wouldn't start it really wouldn't, though after first couple
experiences we would just give up right away if it wouldn't start.

This tended to correlate to high humidity/rain. After sitting
a day in dryer weather it would work. Other cure was to take
out the coil, put it in the oven at 150-200 degrees for an hour
or so, and clean the mounting surface and screw terminal...

I actually did this about 3 times before I bought a new coil.
New coil was $109 US. on the net. Earlier I had seen $200, thats
why I postponed. Actually there was a slightly cheaper coil right
at the same place, but I went for the apparent better quality.

-------From Drivewire.com
For Vehicle: 1998 Volkswagen Jetta III GL 4 CYL
Part: F2010-32950 - BOS Bosch Distributor Cap - (1) @ $10.49
Core: $0.00, Item Subtotal: $10.49

For Vehicle: 1998 Volkswagen Jetta III GL 4 CYL
Part: F2020-24527 - BOS Bosch Distributor Rotor - (1) @ $4.55
Core: $0.00, Item Subtotal: $4.55

For Vehicle: 1998 Volkswagen Jetta III GL 4 CYL
Part: F3004-55219 - BER Beru Ign Coil amp; Control Unit - (1) @ $109.06
Core: $0.00, Item Subtotal: $109.06

The other stuff seemed ready also, car has 80,000 miles.

So you can play with the coil. Your problem could be something else,
this is all I'm up to speed on. Coil is a known issue.

Irv

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Corrado Daddy

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Since: Sep 19, 2006
Posts: 2



(Msg. 3) Posted: Tue Sep 19, 2006 5:18 pm
Post subject: Re: A3 Jetta hard to start [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

You have a coil that is shorting internally by the humidity (morning
dew, etc). It will also happen whenever there is a large temperature
drop overnight. My 96 Cabrio did the same thing. I bought a new coil
and that was the end of the problem. Do it and be done with it.
TEMiller
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dave AKA vwdoc11

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Since: Sep 10, 2004
Posts: 168



(Msg. 4) Posted: Wed Sep 20, 2006 10:55 pm
Post subject: Re: A3 Jetta hard to start [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Sometimes you will see spark jumping around at the coil. (better viewed in
the dark with possibly some moisture on it)
You could possibly sand, degrease and epoxy your coil to repair it cheaply.

I only recommend the coils/transformers from the dealer. I have seen too
many different aftermarket ones not last!

jmho
dave
one out of many daves


"Corrado Daddy" <tmiller159.TakeThisOut@ispmonsters.com> wrote in message
news:1158711535.172376.244920@m73g2000cwd.googlegroups.com...
> You have a coil that is shorting internally by the humidity (morning
> dew, etc). It will also happen whenever there is a large temperature
> drop overnight. My 96 Cabrio did the same thing. I bought a new coil
> and that was the end of the problem. Do it and be done with it.
> TEMiller
>
>
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Randolph

External


Since: Dec 13, 2003
Posts: 186



(Msg. 5) Posted: Wed Sep 27, 2006 4:43 am
Post subject: Re: A3 Jetta hard to start [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Thanks to all who replied.

My friend decided to take the car to a trusted mechanic, the kind who
likes cars and enjoys discussing a problem with the customer, if the
customer is so inclined. He sprayed the coil with a slight mist of
water, and got a no-start situation. Replaced the coil (including the
ignition control module (or whatever it is called in the VW world)
mounted at the bottom of the coil). He then repeated the mist test. This
time the car started without hesitation. The mechanic kept the car over
night, and did a test drive in the early am the following day. No
problem found.

So all good? Not quite. The car now starts on the first try every
morning, but it still cranks a good 5 - 6 seconds before catching (as
opposed to 3 - 5 good 10 second attempts with the old coil). This PM,
after the car had ben sitting for 10 hours or so, I hooked a timing
light to it, connecting to the high voltage wire between coil and
distributor. Again, my friend had to crank for a good 5 seconds before
the engine started. The timing light did not start strobing until just
about when the engine finally started. Any ideas?


TIA




Randolph wrote:
>
> A friend of mine is having problems with her 1998 Jetta GL (Automatic
> transmission). Over the past few weeks it has gotten progressively more
> difficult to start this car in the morning. The starter will crank at
> normal speed, so no lack of battery power, but it takes a lot of
> cranking and several attempts before the engine starts.
>
> Once the engine is running it runs just fine, no hesitation, no loss of
> power etc.
>
> Restarting the engine a couple of hours after it was turned off is no
> problem at all.
>
> Any insight into what this could be? I suspected a leaky injector, and
> suggested that she try starting the car at half throttle tomorrow
> morning to see if this helps.
>
> Any and all suggestions will be appreciated.

--
=======================================================
A very modest collection of Honda tech info can be found at:
http://www.geocities.com/ng_randolph
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One out of many Daves

External


Since: Apr 15, 2006
Posts: 46



(Msg. 6) Posted: Wed Sep 27, 2006 11:55 pm
Post subject: Re: A3 Jetta hard to start [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Engine Speed Sensor (AKA Crank Position Sensor) maybe?

Was the ign coil/transformer purchased from the dealer?
I have seen too many bad aftermarket coils for the 2.0 engine. Sad
--
later,
dave
(One out of many daves)

"Randolph" <trash RemoveThis @junkmail.com> wrote in message
news:451A0119.A426D87@junkmail.com...
> Thanks to all who replied.
>
> My friend decided to take the car to a trusted mechanic, the kind who
> likes cars and enjoys discussing a problem with the customer, if the
> customer is so inclined. He sprayed the coil with a slight mist of
> water, and got a no-start situation. Replaced the coil (including the
> ignition control module (or whatever it is called in the VW world)
> mounted at the bottom of the coil). He then repeated the mist test. This
> time the car started without hesitation. The mechanic kept the car over
> night, and did a test drive in the early am the following day. No
> problem found.
>
> So all good? Not quite. The car now starts on the first try every
> morning, but it still cranks a good 5 - 6 seconds before catching (as
> opposed to 3 - 5 good 10 second attempts with the old coil). This PM,
> after the car had ben sitting for 10 hours or so, I hooked a timing
> light to it, connecting to the high voltage wire between coil and
> distributor. Again, my friend had to crank for a good 5 seconds before
> the engine started. The timing light did not start strobing until just
> about when the engine finally started. Any ideas?
>
>
> TIA
>
>
>
>
> Randolph wrote:
>>
>> A friend of mine is having problems with her 1998 Jetta GL (Automatic
>> transmission). Over the past few weeks it has gotten progressively more
>> difficult to start this car in the morning. The starter will crank at
>> normal speed, so no lack of battery power, but it takes a lot of
>> cranking and several attempts before the engine starts.
>>
>> Once the engine is running it runs just fine, no hesitation, no loss of
>> power etc.
>>
>> Restarting the engine a couple of hours after it was turned off is no
>> problem at all.
>>
>> Any insight into what this could be? I suspected a leaky injector, and
>> suggested that she try starting the car at half throttle tomorrow
>> morning to see if this helps.
>>
>> Any and all suggestions will be appreciated.
>
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