ok trying to figure this out 92 300d surges at highway speeds
have adjusted the alda out ,
fuel filters are new,
gotten rid of algee / cleaned screen in tank ,
turbo waste gate mod,
ovp fuse / relay good,
new lift pump,
no cruise controll hook up
car has good pick up from stand still
idles good
the only thing that has not been done is the fuel return spring
any one got any glues of what to do next ?

Well I would read up and critically check the automatics transmission fluid level.

An Air Leak or the Pressure Relief/Overflow Valve.
If your Fuel Supply Pump has no Hand Primer I believe I have read that inside of the Overflow Valve are some Plastic Parts that can go bad.

__________________
84 300D, 82 Volvo 244Gl Diesel

have been reading for two days now no threades that i have read are specifis to this
only thing comparable is cruise control surges
I will check the fliud level in a bit will also look in to the overflow valve

trans fluid is good
no the problem is starting to turn in to poor acceleration
will do some more reading

I've seen bad air flow sensors cause that.

__________________
Jim

let car cool down for a couple of hours (starting to get cold in N.C. now )
tried a test run and every thing is good
seems to start poor acceleration & surges when is hot and has run for about 30 min

any ideas ?