[mike g]

I have a couple of small problems with my 94 Aero with 114k on the clock. I wonder if you guys have any ideas.

1) During the 1st 5 minutes of driving from cold the clutch pedal feels like it is sticking when depressed or released. I am 100% sure its not the linkage. I've had a new slave cylinder fitted 3 weeks ago and a new master 3 months before that. Hydraulic oil has been changed every 2 years by my Saab dealer. The problem does not effect the smooth operation of the clutch itself.

2) On very rare occasions during my 6 years of ownership the car will produce a mild single back fire on start up. The car always starts immediately with no idle or running problems. Sometimes it happens when the car is completely cold like yesterday, not used for 3 days, other times she is fully warmed up and stopped just for a short time ie. refueling. I am concerned it will do damage to the cat.

The car has been well maintained by a franchised dealer throughout its cosseted life.

 

[mikeloadsasaabs]

I have the same backfire problem, under exactly the same circumstances, with my 1994 2.3t - I was told it was the DI pack not being 100%. The problem is, if it is too severe, it can damage the cat. I'm not entirely convinced by the explanation, although I trust my specialist, because I was led to believe that it had had a relatively recent DI unit in the year or so before I bought it. It's getting better rather then worse so I've left it - there are no other problems with the general running - quite the opposite!

PS. I live just north of Petersfield at Liss, and there is a very good Saab specialist here.

 

[Paul Harrison]

For the clutch pedal I vaguely remember reading on this or another forum that there could be a problem where the rod that goes into the master cylinder from the pedal may not be going straight into the master cylinder, that is at an angle, if they are not lined up properly. I think the solution was to bend the floor a bit to get the alignment right or put in a washer or something under the master cylinder but my memory is not that good so I am not sure. Worth having a look though to see if they are lined up properly.

 

[mike g]

Sorry not getting back sooner.Thanks for the replies.

Mike I agree with you over the back fire not being caused by the DI. My DI has been renewed 18 months ago. It has back fired before and after the change. The back fire I think is caused by excess fuel being ignited in the exhaust but why is a mystery to me.

Paul, I have looked at the rod and believe you must be right. I have lubricated the rod which has made some improvement. I shall fiddle with the alignment and let you know the result.