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View Full Version : My a4 wont start when its cold



a42.8
12-05-2005, 11:48 AM
i went out to start my 1998 2.8 a4 this morning to go to work and there was nothing, battery is good but there is no noise or anything when i turn the key, it did this same thing to me on thanksgiving, i had it towed in to the dealer but they were not able to look at it till the following monday when they reported to me that the car started for them... they proceeded to tell me my alternator was bad so 750$ later i thought i had solved a problem but i have had the car back for two days and it has done it again... i need some help here i cant afford to pay the dealer 129 an hour to look at it and ot solve anything

goldenchild
12-05-2005, 12:11 PM
try unpluggin the maf if the car starts then theres ur prob

a42.8
12-05-2005, 12:24 PM
tried that and still nothing

LateraLex
12-05-2005, 01:01 PM
I love how these guys operate. I'm picturing a roulette wheel with car problems instead of numbers.[mad]

JeffM1587
12-05-2005, 01:04 PM
i seem to be landing on all the games, i need to play black jack more

Wholsea
12-05-2005, 01:08 PM
Check the water level in your battery...

Do you get any lights or anything?

Maybe yer battery is junk...

How many volts does the meter read when the car is in the "on" position but not running?

toneman
12-05-2005, 01:13 PM
do you park outside? maybe it's just damn cold. the other night i had to leave my car outside overnight and the next it had a really tough time turning the crank. last night it was back in the garage and this morning, no problem.

btw, minnesota overnight low's this week = single digits

JeffM1587
12-05-2005, 01:14 PM
maybe ur fuel froze like in the day after tomorrow

a42.8
12-05-2005, 01:15 PM
it reads right around 12 and no there are not any odd lights that i noticed

Wholsea
12-05-2005, 01:18 PM
Originally posted by a42.8
it reads right around 12 and no there are not any odd lights that i noticed

I'd have your battery tested. Mine reads well above 12 when it is reading just the battery. When the car is running on the alternator is the only time mine reads 12...

The only time my battery read 12 was when it was toast. I'd look at your battery first, get that tested. New batteries are fairly cheap (I suggest an interstate battery)

a42.8
12-05-2005, 01:27 PM
it not the battery i just put a good red top in there and still nothing

a42.8
12-05-2005, 01:31 PM
and yes i did park outside last night, it has only done this twice now and both times it has sat overnight and been very cold

JeffM1587
12-05-2005, 01:42 PM
im still going with the frozen fuel line :)

a42.8
12-05-2005, 01:46 PM
if that was the case wouldnt it still try to start

JeffM1587
12-05-2005, 01:47 PM
na i was just jokeing, it has to be super cold for that to happen

a42.8
12-05-2005, 01:53 PM
ya thats what i thought but this makes no sense to me i am out of ideas

Raddue
12-05-2005, 01:54 PM
Originally posted by JeffM1587
na i was just jokeing, it has to be super cold for that to happen
Yeah, since the freezing point of the liquid gasoline is something like -97 degrees F. :)

Try swapping out the battery at a NAPA or AutoZone. If you have a good rep with the people there, they might let you just swap it out in the driveway (that would, of course, involve either borrowing the battery or having your car towed there, I guess). It doesn't happen often, but there are new batteries out there on shelves that are bad. :(

turbojunkie
12-05-2005, 02:06 PM
Your battery is prob. getting too cold. The chemicals in the battery can become too cold to stir up the power necessary to start the car motor.

my .02

quattro8239
12-05-2005, 02:10 PM
My 99.5 1.8t did the same thing when I got it last year. It snowed overnight and it was really cold. Ofcourse the car was outside, go to start it in the morning and nothing not even a crank made me think the battery had died but everything was lighting up sort of the situation when you don't press your clutch in to start the car. Went back that afternoon and it started...never found a solution though but it never happend again.

a42.8
12-05-2005, 02:13 PM
i already tried another battery, it was a red top that was in my garage which is definetly not as cold as it is outside

turbojunkie
12-05-2005, 02:19 PM
auto or manual?

jones3000
12-05-2005, 02:24 PM
strange. still sounds like battery to me.

turbojunkie
12-05-2005, 02:26 PM
Originally posted by B5Ghost
strange. still sounds like battery to me.

Im leaning more towards the neutral safety switch if its an auto, or the clutch switch if its a manual.....

just my .02

a42.8
12-05-2005, 02:27 PM
manual tranny and no pushing it is not really an option i live on a flat street and nobody here to help

a42.8
12-05-2005, 02:31 PM
where is the clutch switch

turbojunkie
12-05-2005, 02:34 PM
Originally posted by a42.8
where is the clutch switch

Should be around the top of the clutch pedal........I'm trying to find a wiring diagram to get you the exact location so you could try and bypass it.....

BarryT82
12-05-2005, 02:44 PM
Originally posted by JeffM1587
maybe ur fuel froze like in the day after tomorrow

It has to be -133F.

turbojunkie
12-05-2005, 03:09 PM
sorry......can't find the diagram......but someone here sould know the exact location.....wish I could be of more assistance. good luck.

a42.8
12-05-2005, 03:31 PM
not a problem thanks for looking hopefully someone will have something or me

Gundem
12-05-2005, 03:53 PM
Originally posted by JeffM1587
maybe ur fuel froze like in the day after tomorrow

...

JeffM1587
12-05-2005, 05:45 PM
Originally posted by JeffM1587
maybe ur fuel froze like in the day after tomorrow
it was a joke

turbow8
12-05-2005, 05:52 PM
Originally posted by JeffM1587
it was a joke

shakes hands with everyone in the room and leaves quietly..... [:p]

bitterchild
12-05-2005, 05:55 PM
peeks in and runs away

94jedi
12-05-2005, 05:57 PM
pulls up a chair and grabs some popcorn

JeffM1587
12-05-2005, 06:28 PM
?

offroader1006
12-05-2005, 06:37 PM
wow, could be a starter solenoid.

they can be temperature sensitive when weak.

check the voltage on the battery while sitting, then get someone to try and crank it and see what it does. notice if it goes down, and if so, how much.

if you can, get the voltage reading at the power wire inbetween the solenoid and starter as well.

a42.8
12-06-2005, 04:19 PM
the car made no attempt again this morning to start but once again around 5 tonight it started right up, it was about -10 here this morning

qtek16
12-06-2005, 05:48 PM
Originally posted by JeffM1587
maybe ur fuel froze like in the day after tomorrow

ill speak for everyone else that read it and didnt say it.......shut up[headbang]

a42.8
12-07-2005, 02:15 PM
once again the car started up last night but not this morning, if it is this started solenoid how do i go about fixing that problem

a42.8
12-08-2005, 09:18 PM
nobody has anymore ideas?

wevudo
12-08-2005, 10:00 PM
it's your plugs

a42.8
12-08-2005, 10:38 PM
are u serious? how would they cause this problem?

wevudo
12-08-2005, 10:47 PM
common problem for 2.8. search aw

a42.8
12-09-2005, 01:47 PM
searched a little not sure where you found that, do you know what about the plugs is affected by cold

nsx_modified
12-09-2005, 07:11 PM
does your car start sometimes and sometimes it doesn't?

if so i have a b5.5 passat and it has the ame problem......i posted on vwvortex and they told me to replace the coolant temp sensor.
i still need to go and get it, its cheap around 8 bucks cdn....and since i know the parts guy hes givin it to me at cost which would be around 3 somethin

4ingDrive
12-09-2005, 08:27 PM
Why the hell is everyone so confused. He says it doesn't even crank.

a42.8
12-11-2005, 07:52 AM
it seems to be right around 5 degrees is the limit for the car, it wont start under that, and yes when it doesnt start it makes no effort at all... when you turn the key past acc there is nothing... but when its a bit warmer outside the car starts up right away

4ingDrive
12-11-2005, 09:25 AM
There is an antitheft relay built into the convenience module. Could be sticking. Other than that I'd say starter or solenoid. Transponder malfunction? Ignition switch? Battery? These are the only things to effect the crank condition.

a42.8
12-11-2005, 09:32 AM
is there anything that is notorious for having temperature sensitive problems

4ingDrive
12-11-2005, 09:45 AM
Not that I'm aware of.

a42.8
12-11-2005, 09:51 AM
how do i go about changing the ignition switch and any idea what that might cost?

4ingDrive
12-11-2005, 09:52 AM
You might want to get a Bentley manual or take it to a professional.

offroader1006
12-11-2005, 11:55 PM
for god sakes, go ahead and change the cd and try again

a42.8
02-14-2006, 06:10 PM
hey guys well my car has been ok for a while now because it has been warmer up here in MN... but this morning it was around 28 degrees and my a4 did it again, good voltage but no crank at all... I need help. I thought this problem was directly related to the cold but it was not cold last night ay one have any ideas now... maybe this new even narrowed it down???????