1. Home
  2. SAAB Cars Forum
  3. Okay now I *know* this isn't me...

Okay now I *know* this isn't me...

I've only had my 2000 Saab 9-3 2.2 TiD since early June, so I'm still getting used to it. This is the first TiD engine used in the 9-3, the 2.2

115 bhp one. I'm using it in conjunction with one of these fuel pump modification units (and it makes a huge difference to acceleration).

I've driven and owned all sorts of turbodiesels and in all they've performed better in cool, foggy conditions and not so good when it's warm. Okay until the last week the temperature has been pretty much over 28°C and it's been especially humid. Now it's cooler and the car feels much, much better...

With this 9-3 the difference between cooler air and warmer is *immense*. If it were a petrol, it feels like it's under-intercooled and the ECU is limiting boost to prevent engine knocking.

Is this a known first generation 9-3 TiD issue? Is the intercooler just too small? Could there be a loose pipe instead?

Reply to
DervMan
Loading thread data ...

In that last really hot weather (35 degrees), my TDCi was definitely=20 sluggish.

The symptoms point (IMO) to a fault in the firmware, because others were=20 reporting the same problem.

Basically, as soon as you hit 3k in 3rd or 4th (I wouln't know about 5th=20 ;-), the power would drop right off until 3.25k, and then take off=20 again, but quite sluggish.

Now the weather's cool, it's back to normal.

Pete.

--=20 NOTE! Email address is spamtrapped. Any email will be deleted Remove the news and underscore from my address to reply by mail

Reply to
Pete Smith

In that last really hot weather (35 degrees), my TDCi was definitely sluggish.

The symptoms point (IMO) to a fault in the firmware, because others were reporting the same problem.

Basically, as soon as you hit 3k in 3rd or 4th (I wouln't know about 5th ;-), the power would drop right off until 3.25k, and then take off again, but quite sluggish.

Now the weather's cool, it's back to normal.

*-*-*-*

Ding, just about - except I so rarely exceed 3,000 rpm I can't confirm otherwise...

Reply to
DervMan

I would suspect that the intercooler is marginal, and if you set up a logger on the charge temp vs boost pressure you will see 60+ deg c charge temp and the ecu pulling boost back.

This'll be your problem.

Tim..

Reply to
Tim (remove obvious)

"Tim (remove obvious)" wrote in message news: snipped-for-privacy@bt.com...

Goodo. Time to use my OBD-II scanner again then! :)

Reply to
DervMan

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.