Jeep Grand Cherokee 2.7 CRD not revving or accelerating

[Harlekin]

hey hey

new update

i have change the complete engine wiring harness. and now is my ecu complete broken.
i have the same trouble codes like before with the old ecu was is broken.
the same like askula.
where is the F***** probleme???
why run the car as first in a selfprotect programm and now the car runs nothing???
all wires are ok and on the right place.
is it possible that the problem is in the harness with the pdc??? the harness what goes in the passengerroom????
im open for all ideas.

heiko

[fester]

Which ECU, have you tried the old one again. Does a new ECU need to be coded to the car. Have the codes and MIL been cleared properly, some can only be cleared by the dealer tool. You have replaced the engine loom but have you tested the circuits that the loom plugs into. Did you test the accelerator position circuit and the others previously mentioned in that loop.

What actually happens now, does it try to start, do all the right lights come up or go out, does it fire up at all etc.

Long shot but run the car with the air glow unplugged see if it works then
My car wouldn't rev or it had bad flat spot but would never get up to sped and caused mayhem when my air flow meter packed up there very sensitive
It don't cost nothing to unplug it

[Harlekin]

i have tested the new ecu and i have see that i have one new trouble code.
the trouble codes for 2 month was this:
100, 190, 2120, 2125, 1608, 235, 700
the trouble codes with the new ecu after 3 days run are this:
836, 651, 530, 520, 235
and now after change the engine harness are that:
100, 190, 2120, 2125, 1608, 235, 115

tha car run with the trouble codes 836, 651, 530, 520, 235 but not right.
and the MIL was on. thats the reason why i change the engine harness.

i dont know how i can check the sensors. but i dont think that the sensors are bad. one or two sensor are possible, but 7???? i dont think so.

any ideas??

[Harlekin]

i have an idea.

is it possible that the TCM defect is and thats the reason for an broken ECU is???
or maybe one Sensor is broken and destroy the ECU??? but which Sensor have so much Power???

Originally Posted by Harlekin

i have an idea.

is it possible that the TCM defect is and thats the reason for an broken ECU is???
or maybe one Sensor is broken and destroy the ECU??? but which Sensor have so much Power???

Did u try unplugging the air flow meter on the air box if so how did I react

[Harlekin]

that have i try last time and nothing is change.
he runs but i can nothing do.