1988 90 Quattro niggles

Nick_S · 22-06-08, 11:21 PM

Just got myself a 1988 90 Quattro with a KV powerhouse. It's done 152,000 miles with a full service history.

Any pointers to help me out with the running issues?

Temp indicator comes on even though not overheating
Amber coolant overflow? comes on
ABS not working, have to disengage to drive car safely.
Misfire at high RPM.

Hopefully these are straight forward enough for me to fix myself. There is a F plate coupe in my local breakers i could get the expansion tank from?

Much appreciated

Nick.

20vcqdriver · 23-06-08, 11:18 AM

Several areas to explore here.
Firstly check you have power to the temp indicator sendor and switch at the botom of the reservoir. If I remember rightly temp sender it should be on the head somewhere (been a while since I had a KV). If voltage present change the sender/ switch.
Not sure about ABS as never had it on any of my old cars.
Misfire at high RPM usually points to leads/ plugs or distributer cap/ rotor arm problem.

Nick_S · 23-06-08, 07:48 PM

Thanks

I spotted the sensor on the bottom of the expansion tank and thought about checking it. Will the temp sender be on the thermostat housing like it is on my polo engines?

msh · 25-06-08, 06:38 PM

When i got my B3, the only thing that showed my temp gauge [and warning light], was - nothing or full temp, both warning lights sometimes blinked without reason. I changed both temp sensors - one is for gauge, other is for warning light, in my case if one of them isn't connected, then gauge didn't display nothing. Gauge temp sensor was from junkyard [3 lvl, about 5 eur], warning light sensor was brend new original [12 lvl, about 20 eur]. It solved the problem.

MikeNZ · 31-07-08, 06:12 PM

Check out kvquattro.com fir loads of info including ABS diagnostics under 'Info/data'

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Audi 90 quattro 1988	ian20v	Cars For Sale	21	03-09-09 01:44 PM
1988 Quattro (non-turbo)	86audicoupe	Cars For Sale	6	27-04-09 11:54 AM
1988 Audi 90 Quattro, tax and test.	brushdaft	Cars For Sale	11	15-04-09 02:53 PM
1988 90 Quattro saloon 2.2	paul42	Cars For Sale	4	07-05-08 11:25 AM

23-06-08, 11:18 AM	#2
20vcqdriver 4 ring whore! Classic Audi Club Member Join Date: Dec 2007 Location: Wirral Posts: 3,910	Several areas to explore here. Firstly check you have power to the temp indicator sendor and switch at the botom of the reservoir. If I remember rightly temp sender it should be on the head somewhere (been a while since I had a KV). If voltage present change the sender/ switch. Not sure about ABS as never had it on any of my old cars. Misfire at high RPM usually points to leads/ plugs or distributer cap/ rotor arm problem.

23-06-08, 07:48 PM	#3
Nick_S Newbie! Join Date: Jun 2008 Posts: 18	Thanks I spotted the sensor on the bottom of the expansion tank and thought about checking it. Will the temp sender be on the thermostat housing like it is on my polo engines?

25-06-08, 06:38 PM	#4
msh 4 ring whore! Join Date: Jun 2008 Location: Rucava, Latvija Posts: 3,816	When i got my B3, the only thing that showed my temp gauge [and warning light], was - nothing or full temp, both warning lights sometimes blinked without reason. I changed both temp sensors - one is for gauge, other is for warning light, in my case if one of them isn't connected, then gauge didn't display nothing. Gauge temp sensor was from junkyard [3 lvl, about 5 eur], warning light sensor was brend new original [12 lvl, about 20 eur]. It solved the problem.

31-07-08, 06:12 PM	#5
MikeNZ Grown up member Join Date: Jul 2008 Posts: 246	Check out kvquattro.com fir loads of info including ABS diagnostics under 'Info/data'