Hi I have this code P0172
Hi Greg, thank you for your response.
There is no MAF sensor in this car and the O2 sensor is all right.
And we checked the catalytic converter and he's all right as well.
We mesured the fuel pressure and it's 12 bars, but somtimes it went down to 3 bars, is that normal ?
The outgoing pollution in idel was 1,21 co and in higher rmb he was 1,7 co.
Best regards, Guðni
The car model is 2001 Dodge Caravan Sport. Engine size is 3.8.
We finally changed the fuel pump regulator and we still have the same problem.
Do you have any more ideas ?
No there are no codes (but the car is lacking a spark/or one cylender).
We measured the car with this computer :
Name: INNOVA 3160
And the resaults was:
Calc load (%) 6.3
ECT (%) 92
STFT B1 (%) - 25
LTFT B1 (%) - 25
MAP (kpa) 34
Eng RPM 788
Veh speed (km/H) 0
Spark Adr(*) 13.5 - 17
TPS (%) 14.5
O2S B1 S1(v) 0.235 - 0.920
STFT B1 S1 (%) -25.0
O2S B1 S2 0.765
STFT B1 S2 99.2
MIL DIS (km) 0
This resault was from another computer:
CO 1.21 to high
The cooling wift is always running.
The problem started when we hit the brakes, or stopped very suddenly.