Quote:
|
Originally Posted by DieselDummy
Try using the cruise control "Accl" lever when trying to accellerate on a road or highway. Keep you foot on the gas and ingauge the cruise "Accl" lever and if you car starts to accellerat better you have the same problem my 91 300d has. On my car this lets the turbo boost for some reason and it runs great, otherwise it super slugish all the time.
here's my post:
Hi,
I am a decent machanic but a diesel dummy as in my log-in name.
I have a 1991 300d 2.5 turbo that is having intermintant boost issues that seem to be and electronic based problem. I installed a boost gauge so I can track whats going on and half, some, most, or none of the time my car will boost and when it's not, I can get it to attain full boost just my activating the Accl. lever of the cruise control. Once it starts to boost it runs great and may go 1 min./day/week working correctly before the boost drops out again.
Whatever electrical device the Cruise Control circut is controling must be getting or not getting a signel from whatever is supposed to control it. What controls the boost system, is it the CPU or something else? What can I look at ?
thanks in advance!
kevin
|
The only way I can see it doing this is if your linkages are out of whack, and by using the cruise lever your letting the cruise acutator take up the slack in the linkage and essentially pull the throttle to where it should be. Since the pedal linkage might be loose or sloppy, and the one from the acutator essentially connects right to the main link. Otherwise the cruise has no other control over anything else, at least not on these older cars....
__________________
-diesel is not just a fuel, its a way of life- 
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)
|