Technical P0170 and P1170 error codes

[jonik]

Hi!

Already tried another throttle body, fuel rail with injectors and lambdas but no go. Was worse without first lambda. There was no pressure in the fuel hose, should it be like that? Feels like lack of fuel, takes time to start. Should I test new map sensor next? No check engine light.

P0170 mixture strength signal low
P1170 mixture strength minimum lean fuel

 

[varesecrazy]

checked flow from fuel pump / filter ..??

Charlie

 

[jonik]

Tested it, seems to be working.

Idles fine and works good over 4000rpm. Here's a vid:

 

[jonik]

Checked lambda with MES. Constant lean 0,2-0,3v isn't normal I suppose. Now there was only P0170 if that helps. Consumption was 20mpg and stalled couple of times on 20 mile drive.

 

[jonik]

Time for an update.

Fuel pressure was 1,2-1,3 bar and goes to zero when fuel pump is off. Haynes says 3,5 bar so time for new pump. Intake vacuum was in specs.

 

[jonik]

It works!

Bought used fuel pump and now it works like new again