The engine of my 940 turbo fails when I try to speed it fast, it get 4000 rpm and it seems to be that there is no fuel, I have changed the distribuitor and rotor, fuel filter, cheched the fuel pump presure, but still I have the problem, it tipically happens when you try to get speed when you get the highway.
I would appreciate any help on this matter

 

"Seems there is no fuel", but you have a high speed engine misfire under load which is caused by fuel or by ignition, spark. You have looked at all the fuel issues, now look at the spark: plugs, wires, etc. Wires may be the cause, especially in wet conditions, as well as the coil, as well as a cracked dist cap. Or the power stage amp... Sorry, it's a lot but it goes fast once you get into it.

 

Thanks I will check the wires tomorrow

 

I have checked the spark plugs and wires , everything is OK, I have also changed the amplifier module and the crankshaft position sensor is new

 

Dirty injectors. Try to run some fuel system cleaner through, or just buy some new injectors. i have seen this occur far too many times.

 

I have cleaned injectors, I am thinking in the pressure regulator , because i have checked only the fuel pump pressire but not the pressure in the system, someone knows how it work?

 

Check the intake hose from the air filter is not collapsing.

Regards, Andrew.

 

By chance was the rear main seal just replaced?

 

Thanks typhoon, it was the intake hose collapsed. I have used a pair of clamp around the hose to avoid it collapse.

Best Regards and thanks again for the help

 

Glad you found it.

 

Cool. Easy fix! I only know about this problem because a good friend of mine with a Volvo spent months chasing the same problem.

Regards, Andrew.