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Next: chevy 99 wheels on yukon denali 2003
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External
Since: Sep 26, 2003
Posts: 56
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(Msg. 1) Posted: Mon Dec 17, 2007 1:15 pm
Post subject: Won't run hot
Archived from groups: rec>autos>makers>vw>watercooled (more info?)
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Car, 1987 Scirocco 16V. 233,700 miles.
Location, Eastern Massachusetts.
Time: Yesterday afternoon during tail end of snow/rain/freezing rain.
Around 30 degrees F out.
I've had this very occasional problem for a few weeks where it would loose
power for a second or so.
Then it progressed to loosing power for many seconds to a minute or more.
But if I shut it off and started it again, it ran for about five seconds
then went back to the low/no power mode. When it's doing this it sounds
like it's running on one or two cylinders and the tach claims 100 to 200
RPM. During this period, if I just let it idle like this for a minute or
two, it cleared up and ran normally again.
Yesterday, it did the above trick once, then, on the way home, got stuck
doing it continuously. If I shut it off and started it, it was doing the
"five second run" thing, but immediately went to the "two cylinder & 100
RPM" thing. I kept at that for close to an hour. At which point I got to
wondering if it would run better if I let it get cold rather than tried to
get it to warm up. So, I let it sit for ten minutes. Started up and ran
normally for about a minute. Enough to get down the road a bit and into a
place I was less likely to get rear ended by a snow plow. Got it into a
parking lot and left it.
Went back up later to move it into a proper parking space, started right up,
drove it around the lot, no problems. Probably ran for about four minutes
and was still going OK when I shut it down. But the temperature gauge never
got out of the white zone at the very bottom of the scale.
Any suggestions on what this might be? I'm trying to decide if I bring it
home or take it to the garage. Either is about the same driving distance,
and I figure if it's dead cold I can make it to either location. If it's
likely to be easy to fix, I'll bring it home and do it this weekend. If
it's likely to be a pain, I'll take it to the garage.
Advice? Observations? Suggestions*?
Anything I forgot to mention, just ask.
- Bill
___________
* No, sledgehammers and explosives aren't viable suggestions. Though I did
think of both, and more, myself yesterday. |
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External
Since: Nov 26, 2006
Posts: 185
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(Msg. 2) Posted: Mon Dec 17, 2007 1:15 pm
Post subject: Re: Won't run hot [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Dec 17, 1:15 pm, "Bill Leary" <Bill_Le....DeleteThis@msn.com> wrote:
> Car, 1987 Scirocco 16V. 233,700 miles.
> Advice? Observations? Suggestions*?
S.W.A.G: Ignition-related (electrics).
a) Bad coil -gets hot, gets intermittent.
b) Bad wires/cap/rotor/plugs more-or-less in that order.
Super-Stretch-S.W.A.G: Vapor lock related to a clogged or partially
clogged fuel filter.
Peter Wieck
Wyncote, PA |
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External
Since: Dec 17, 2007
Posts: 5
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(Msg. 3) Posted: Mon Dec 17, 2007 2:10 pm
Post subject: Re: Won't run hot [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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As Peter suggests, I'd sure check out the ignition electrics first; if
it isn't there, then you might look at the following.
Since "During this period, if I just let it idle like this for a
minute or two, it cleared up and ran normally again," it could be
flooding brought about by a failed fifth injector timer. This car has
a timer-sensor in the water jacket or in water line on the front of
the engine which causes a fifth injector to pump raw gas into the
plenum chamber to start the car when it's cold. One of the failure
modes of the timer sensor has the result of opening up the fifth
injector, causing the engine to flood. This caused starting problems
on my 85 Jetta GL (8V engine) until I finally replaced the timer
sensor.
I don't think it's your hall sender, which also gave me fits, because
the usual symptom is for the car to just die (usually in the middle of
a busy intersection...how does the car know?) and then, after you push
it, cursing, into some parking space, and get a ride home, everything
starts normally when you get back with the tow truck about an hour
later. However, your "2-cylinder and 100 rpm thing" is not the same as
a stone-dead car that won't start at all.
If you find a good deal on sledgehammers and explosives, let me know -
it may be time to take revenge on my 85.
Pat Moore
Juneau, AK >> Stay informed about: Won't run hot |
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External
Since: Aug 10, 2007
Posts: 74
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(Msg. 4) Posted: Mon Dec 17, 2007 6:11 pm
Post subject: Re: Won't run hot [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Does it run fine when warmer out? Is the pre heat hose to the air cleaner
connected and working? the fuel distributor sensor plate maybe icing up...
"Bill Leary" <Bill_Leary.TakeThisOut@msn.com> wrote in message
news:-4KdnW7tUbCEIPvanZ2dnUVZ_saknZ2d@giganews.com...
> Car, 1987 Scirocco 16V. 233,700 miles.
> Location, Eastern Massachusetts.
> Time: Yesterday afternoon during tail end of snow/rain/freezing rain.
> Around 30 degrees F out.
>
> I've had this very occasional problem for a few weeks where it would loose
> power for a second or so.
>
> Then it progressed to loosing power for many seconds to a minute or more.
> But if I shut it off and started it again, it ran for about five seconds
> then went back to the low/no power mode. When it's doing this it sounds
> like it's running on one or two cylinders and the tach claims 100 to 200
> RPM. During this period, if I just let it idle like this for a minute or
> two, it cleared up and ran normally again.
>
> Yesterday, it did the above trick once, then, on the way home, got stuck
> doing it continuously. If I shut it off and started it, it was doing the
> "five second run" thing, but immediately went to the "two cylinder & 100
> RPM" thing. I kept at that for close to an hour. At which point I got to
> wondering if it would run better if I let it get cold rather than tried to
> get it to warm up. So, I let it sit for ten minutes. Started up and ran
> normally for about a minute. Enough to get down the road a bit and into a
> place I was less likely to get rear ended by a snow plow. Got it into a
> parking lot and left it.
>
> Went back up later to move it into a proper parking space, started right
> up, drove it around the lot, no problems. Probably ran for about four
> minutes and was still going OK when I shut it down. But the temperature
> gauge never got out of the white zone at the very bottom of the scale.
>
> Any suggestions on what this might be? I'm trying to decide if I bring it
> home or take it to the garage. Either is about the same driving distance,
> and I figure if it's dead cold I can make it to either location. If it's
> likely to be easy to fix, I'll bring it home and do it this weekend. If
> it's likely to be a pain, I'll take it to the garage.
>
> Advice? Observations? Suggestions*?
>
> Anything I forgot to mention, just ask.
>
> - Bill
> ___________
> * No, sledgehammers and explosives aren't viable suggestions. Though I
> did think of both, and more, myself yesterday.
> >> Stay informed about: Won't run hot |
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External
Since: Sep 26, 2003
Posts: 56
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(Msg. 5) Posted: Mon Dec 17, 2007 6:44 pm
Post subject: Re: Won't run hot [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Thanks for the suggestions folks. I'll work through them as soon as the
weather permits.
Comments:
I'd dismissed the ignition system since it runs perfectly while it's cold.
On the other hand, most of that is so simple to check that it would be sort
of nuts not to go through that first and at least put it out of
consideration.
As to "when it's warmer," unfortunately, the car has had a couple of
adjustments which happened to coincide just about exactly with the weather
getting colder. It had to be tuned to pass inspection. And it got colder
about that time. And the problems started about that time. It's hard to
say it was an issue with the tuning (no new parts, just adjustments) or it
getting cold.
I just drove it home. It was just up the end of the street. Took about
three minutes and the temperature gauge never moved off the bottom of the
scale. Ran perfectly the entire time. I'm going to start it up tomorrow
and let it run until it's warm and see what it does.
Thanks again. I may be back for more ideas after I've worked through these.
- Bill >> Stay informed about: Won't run hot |
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External
Since: Jan 09, 2007
Posts: 62
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(Msg. 6) Posted: Tue Dec 18, 2007 7:56 am
Post subject: Re: Won't run hot [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Bill Leary" <Bill_Leary RemoveThis @msn.com> wrote in message
news:P_SdnSqXXKe6l_ranZ2dnUVZ_qmlnZ2d@giganews.com...
> Thanks for the suggestions folks. I'll work through them as soon as the
> weather permits.
>
> Comments:
>
> I'd dismissed the ignition system since it runs perfectly while it's cold.
Don't. Ignition systems often have problems with heat. That would be
the first thing I would check with the problems you are having.
If it is about time, I would replace the plus wires coil and cap.
> On the other hand, most of that is so simple to check that it would be
> sort of nuts not to go through that first and at least put it out of
> consideration.
>
> As to "when it's warmer," unfortunately, the car has had a couple of
> adjustments which happened to coincide just about exactly with the weather
> getting colder. It had to be tuned to pass inspection. And it got colder
> about that time. And the problems started about that time. It's hard to
> say it was an issue with the tuning (no new parts, just adjustments) or it
> getting cold.
>
> I just drove it home. It was just up the end of the street. Took about
> three minutes and the temperature gauge never moved off the bottom of the
> scale. Ran perfectly the entire time. I'm going to start it up tomorrow
> and let it run until it's warm and see what it does.
>
> Thanks again. I may be back for more ideas after I've worked through
> these.
>
> - Bill
>
--
Joseph Meehan
Dia 's Muire duit >> Stay informed about: Won't run hot |
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External
Since: Nov 03, 2007
Posts: 326
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(Msg. 7) Posted: Tue Dec 18, 2007 8:40 pm
Post subject: Re: Won't run hot [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Bill Leary wrote:
> Thanks for the suggestions folks. I'll work through them as soon as the
> weather permits.
>
> Comments:
>
> I'd dismissed the ignition system since it runs perfectly while it's
> cold. On the other hand, most of that is so simple to check that it
> would be sort of nuts not to go through that first and at least put it
> out of consideration.
>
> As to "when it's warmer," unfortunately, the car has had a couple of
> adjustments which happened to coincide just about exactly with the
> weather getting colder. It had to be tuned to pass inspection. And it
> got colder about that time. And the problems started about that time.
> It's hard to say it was an issue with the tuning (no new parts, just
> adjustments) or it getting cold.
>
> I just drove it home. It was just up the end of the street. Took about
> three minutes and the temperature gauge never moved off the bottom of
> the scale. Ran perfectly the entire time. I'm going to start it up
> tomorrow and let it run until it's warm and see what it does.
>
> Thanks again. I may be back for more ideas after I've worked through
> these.
>
> - Bill
>
IIRC you have another car; I'd try swapping the coils between the two
cars and see if the symptoms follow.
nate
--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel >> Stay informed about: Won't run hot |
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External
Since: Sep 26, 2003
Posts: 56
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(Msg. 8) Posted: Thu Dec 20, 2007 11:09 am
Post subject: Re: Won't run hot [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Joseph Meehan" <sligoNoSPAMjoe DeleteThis @hotmail.com> wrote in message
news:4767c36b$0$8877$4c368faf@roadrunner.com...
> "Bill Leary" <Bill_Leary DeleteThis @msn.com> wrote in message
> news:P_SdnSqXXKe6l_ranZ2dnUVZ_qmlnZ2d@giganews.com...
>> Thanks for the suggestions folks. I'll work through them as soon as the
>> weather permits.
>>
>> Comments:
>>
>> I'd dismissed the ignition system since it runs perfectly while it's
>> cold.
>
>
> Don't. Ignition systems often have problems with heat. That would be
> the first thing I would check with the problems you are having.
I'd been thinking about that since I said it, and I find that I agree. I
recall a beetle from long ago that would quit after warming up. Turned out
the coil had gone bad and would work until the engine warmed up then started
getting intermittent.
> If it is about time, I would replace the plus wires coil and cap.
Now that you mention it, the plugs and cap were replaced about a month
before all this started.
- Bill >> Stay informed about: Won't run hot |
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External
Since: Sep 26, 2003
Posts: 56
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(Msg. 9) Posted: Thu Dec 20, 2007 11:13 am
Post subject: Re: Won't run hot [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Nate Nagel" <njnagel RemoveThis @roosters.net> wrote in message
news:fk9sqv01li@news2.newsguy.com...
> IIRC you have another car; I'd try swapping the coils
> between the two cars and see if the symptoms follow.
You recall correctly. I have two 1987 16V Scirocco's.
Your suggestion is perfectly logical, but I won't do it.
I just KNOW that something will screw up and I'll end up with two dead cars
instead of one.
If it were in the 70s I'd probably do it anyway, but with the temps running
in the low 30's in the day and the teens at night, I don't want to be out
there tinkering with a car which works fine right now.
- Bill >> Stay informed about: Won't run hot |
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