Audi 100 Questions
ben_d at clear.net.nz
Wed Dec 29 02:37:45 EST 2004
On 29 Dec 2004, at 5:44 PM, Kent McLean wrote:
> Cold? Isn't it summer in NZ? Hard starting may be caused by a bad
> temperature sensor failing to tell the ECU it is cold. Poor idle may
> the ISV; clean it or replace it.
Yes, it is supposed to be summer but it is pouring down at the moment,
and not much warmer than winter!! ;-) I will check the resistance of
the temp sensor and compare it to my 90. I have already taken the ISV
out and given it a blast with WD 40, and it seemed to work OK when I
stuck a battery on it.
>> Also, the other day, while I was driving down the motorway, it got hot
>> and started to knock, but hasn't done it since so I am not sure what
>> caused it.
> That doesn't sound good. My guess is that something (blocked
> radiator? Low coolant level? Dead fan?) caused the car to overheat.
> The overheating thinned the oil, which couldn't lubricate things
> properly, which caused the knock.
The radiator was replaced with a new one 2 years ago, according to the
receipts I got with it. The fan does work, but only seems to run at
high speed- I thought these fans were dual speed??
I just thought of something else- is the smaller fan on the front of
the evaporator supposed to run when the climate control is switched on?
Mine doesn't seem to.
>> How do I check the mixture on this engine?
> Use an exhaust gas analyzer?
I will put my meter on it and see what it comes up like but I am not
sure if it will be accurate enough.
On a side note, this car doesn't seem to have CIS-E, it still has the
'plain' fuel distributor and warm up regulator on the side of the
block, and doesn't have the self check system- I thought all of the
later 100's had electronic fuel injection?
'71 VW 1600TL
'65 VW 1500N - Val
'66 VW 1300 Aussie Beetle
'64 VW Kombi project
'70 NSU Ro80
'71 NSU Ro80
'85 Audi 90 2.3E Quattro
'86 Audi 100CS Quattro
More information about the quattro