J Liepins

I bought an Audi 90 Quattro a few months back and have noticed pretty much since I bought it that when the car first starts it is a little sticky on the acceleration. What I mean is that when I first accelerate down the road, it feels like the brakes are slightly engaged holding back on the acceleration. I brought it into the shop and the mechanic suspected the rear brakes. However, that did not solve the problem. The problem is only present when the car is first started and goes away once the car is warmed up. Is this just normal? Are my breaks just sticky with moisture? Or could this have to do with the engine or clutch somehow? If anyone has had experience with this before, I'd appreciate any advice.
Thanks

MikTip

How old are the Ox Sensors?

sidespar

I got a 1990 90 quattro20V. I know exactly what you are talking about. It kind of feels like the engine is missing if you gun it right after you start it, also there a clicking that will go away after it warms up. I guess this is normal,. It has always done this for me, just give the car some time to warm up. Also, I would suggest upgrading to mid-grade + gasoline if you are using regular, because with regualr gas in my car, it had a tendancy to knock heavily when it was first started.

J Liepins

I'm at 75K so it's time to replace. But what effect would the Ox sensors have on the acceleration?

QCRAZY

...to get it to go away. What's your oil consumption like??? About 1k miles/qt??

I think it's the engine burning off the oil that seeps through the valve seals overnight!! I'm going to replace my valve seals (soon hopefully)and see if that fixes it!! (I'm running out of things to try!!)

I'll post if I ever actually get it done...knock on wood!!!

My emission system is practically brand new!!! Didn't help my car any!!

HTH!!!
---
Andrew
90 80q
91 90
95 90q

J Liepins

Yes ... please let me know if you get that done. My oil consumption is less than that, at least last time i checked. That seems a little much to me, but then again what do i know? Well, if that does work let me know.
John

MikTip

Their part of a process which can severly limit fuel to the engine.

Could be the MAF sensor not reading the airflow into the engine correctly.

How old is you intake air filter?

There is also a screen on the MAF sensor. Sometimes it gets junk on it which can obstruct the MAF and cause the MAF to not read correctly.

J Liepins

Thanks a bunch for the advice. I'll need to check the previous owner's service records to see. I've heard conflicting reports on when the O2 sensor needs to be changed in the 1993 90Quattro. Some say 75K, some say 90K.
Thanks for the advice.

MikTip

Mine went bad at 63K!

SteveAngry

so keep that in mind. They dont always last as long as the suggested service interval...best thing to do is to just test and replace as needed...

Steve Ankney
88 5000
Michigan