406 1.9 TD Idling speed

[MICHAEL ROCHE]

Gents
Can anyone tell me the following speeds for a 406 1.9 Turbo Diesel fitted with air con. Idling speed Fast Idling speed

Mike

 

[G.T]

Hi,

Idling speed

No clue, perhaps around 800-850 RPM.

Fast Idling speed

Usually 100RPM faster.

 

[flash]

"> > Idling speed

No clue, perhaps around 800-850 RPM.

Usually 100RPM faster.

What engine type? I have a Haynes manual somewhere with details of D9B engine. Trouble is that the reading on your tachometer may not be all that accurate. Best to go on perceived engine speed. If it sounds forced then its too fast! Fast idle is usually about 50rpm faster but mine goes about 200rpm for a short while and gradually reduces as the cable expands with the rise in engine temp.

 

[G.T]

Hi,

What engine type? I have a Haynes manual somewhere with details of D9B engine.

In the thread it is a XUD9TE, of course (1.9TD on a 406). The D6B is indeed a XU9JA, i.e a 1.9GTi.

Trouble is that the reading on your tachometer may not be all that

accurate.
True, but you usually see when it's on fast idle or on normal idle.

Best to go on perceived engine speed. If it sounds forced then its too

fast!
I guess I'd do that on feeling, too.

 

[flash]

What engine type? I have a Haynes manual somewhere with details of D9B

In the thread it is a XUD9TE, of course (1.9TD on a 406). The D6B is indeed a XU9JA, i.e a 1.9GTi.

My newsreader only picked up part of the thread - no mention of engine type! If the type of fast idle is the same as the D9B then it is a fairly primitive affair that may require adjustment. The a/c has a definite effect at idle or low revs -

Could try an musical electronic tuner. What's the frequency @ 850rpm +/- 50

If it has failed, adjusting the idle speed will more than compensate for any tendency to stall.No idea if that has any affect on mpg. Unless you spend a lot of time stationary in traffic of course.

regards

 

[G.T]

If the type of fast idle is the same as the D9B then it is a fairly Nope, the thread deals with a Diesel.

primitive affair that may require adjustment. The a/c has a definite effect at idle or low revs -

Yes, but it is automatically compensated when AC is on.

Could try an musical electronic tuner. What's the frequency @ 850rpm +/- 50

Two ignitions / rev, single freq of ignition @850RPM=14.17Hz, real repetition of ignitions=28.34Hz. And why not a microphone plugged to an oscilloscope ? You'd then see a nice kind of AM-like waveform (with a far lower frequency, though).