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Drive Slowly Service Urgent

Old 11-28-2007, 06:00 AM
Thread Starter
Join Date: Sep 2005
Posts: 8
Default Drive Slowly Service Urgent

Hi Guys;
I have 99 S80 T. few days ago i got the light of runing man (Drive Slowly Service Urgent) msg displayed.

the care bit shaking on neutral close to stop. like missfiring.

Need help from Technical guys.
I use 98 Octain Unleaded Petrol + i add fuel system cleaner but no help.

Old 11-28-2007, 06:49 AM
Join Date: Feb 2007
Posts: 37
Default RE: Drive Slowly Service Urgent

Your car has gone into limp mode. This means the car has electronically limited the power output to protect itself from further damage probably due to some sort of component failure. You will need to get it to a mechanic and get the codes read so the problem can be diagnosed.
Old 11-28-2007, 10:56 AM
Senior Member
Join Date: Dec 2005
Location: NOYB
Posts: 6,192
Default RE: Drive Slowly Service Urgent

1. Have you had the ETM replaced?

2. Have you had the new ETM software installed?

3. Are any other lights on on your dash? Such as the ETS light?
Old 11-28-2007, 11:22 PM
Thread Starter
Join Date: Sep 2005
Posts: 8
Default RE: Drive Slowly Service Urgent

Hi Guys

Thank you for ur reply. I dont have any other lights on. I can see black smok come out when i try to accelerate.

Old 11-29-2007, 06:04 PM
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Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Default RE: Drive Slowly Service Urgent

You need to have the codes pulled.
Old 01-12-2008, 12:03 AM
Join Date: Jul 2006
Posts: 12
Default RE: Drive Slowly Service Urgent

Had same message appear twice,car ran rough when idling.
Both times problem was solved by changing an ignition coil pack.
Coils are about $70 each,there are six of them.I just changed the faulty one,takes about 10 minutes,did it in the driveway.
Both times a Service Emission System light also came on,Probably due to unburnt fuel going out the exhaust tricking the O2 sensors.Once coils were changed lights went out after disconnecting battery.
Old 01-16-2008, 11:57 PM
Join Date: Jan 2008
Posts: 1
Default RE: Drive Slowly Service Urgent

For gmc1: I am having exactly the same problems with my 1999 Volvo S80T6 (Service Emission System and Drive Slowly Service Urgent warnings came on). How did you determine which was the defective ignition coil pack ?
Old 01-17-2008, 05:12 PM
Join Date: Jan 2008
Posts: 23
Default RE: Drive Slowly Service Urgent

Hi goprea,

i also have a 1999S80 T6 and have changed a coil pack recently and a few on my other vehicles.
There are 2 ways that i know off, one is link it up to a diagnostic and it will tell you which one is down or
If it is one of your coil packs you will notice that at idle your engine is miss firing take the cover off the engine so you can see the coil packs, start your engine and pull the 1st coil pack off if the engine idles worse than you know this pack is working go through from left to right as soon as you unplug one and it makes no change in engine tone then you know that that one is the faulty one!
It gets a little bit more difficult if more than one has gone but follow the same instructions!
(it's not that often that more than 1 go at the same time.)
Hope that helps
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