midnight_man
New member
- Joined
- Jul 15, 2021
Hellou guys,
I found that amazing site...about volvos.
I have Volvo 740i here in our garage (workshop) which has problems with starting, mixture and so on... This old car is not very popular here so...not any knoweledge here.
ECU is old..does not have diagnostic output....
What I found is..that car is lean..on idle almost stalling...in full load is refusing to run..
We bought new pressure regulator cause old was DEAD....
I suspect MAF is cheating ...cause when I push little air into MAF, mixture will go better...
There is no chance to buy new MAF on this car....we have 2 spare ones which both doing same thing.
I am able to change maps in ecu....or I can change MAF voltage curve to fit "broken" MAF?
But..as first I want to try repair that car....
Can you advice me little? Are those MAF all bad? What else can do this? Is there anything more to check? Thanks!
I found that amazing site...about volvos.
I have Volvo 740i here in our garage (workshop) which has problems with starting, mixture and so on... This old car is not very popular here so...not any knoweledge here.
ECU is old..does not have diagnostic output....
What I found is..that car is lean..on idle almost stalling...in full load is refusing to run..
We bought new pressure regulator cause old was DEAD....
I suspect MAF is cheating ...cause when I push little air into MAF, mixture will go better...
There is no chance to buy new MAF on this car....we have 2 spare ones which both doing same thing.
I am able to change maps in ecu....or I can change MAF voltage curve to fit "broken" MAF?
But..as first I want to try repair that car....
Can you advice me little? Are those MAF all bad? What else can do this? Is there anything more to check? Thanks!