Technical fiat punto engine change, help..

[sailorjim]

Hi all, i have 2000 fiat punto 1.2 8 valve with no cam sensor, and have changed the engine for 52 plate engine that had a cam sensor fitted, the car now will not start, can anybody help me please??

 

[Ziggy122]

A Non Cam Sensor engine can be replaced with a Cam engine
However the Original ECU from the car HAS TO BE USED
not the one that might have come with the car tho

Also is the Key-code light on?

Ziggy

 

[sailorjim]

Hi ziggy thanks for the reply.. Do you mean the original ecu or the doner engine ecu??

 

[Ziggy122]

the car Should have the Donor engine, but the ORIGINAL ECU

when you put a Donor ECU with the Donor Engine intogether - they dont wanna communicate with the rest of the cars Electronics = immbo Says no starty


So Bascially stick the original ECU back in - and report back

Ziggy

 

[sailorjim]

Never changed the ecu, and the keycode light comes on with ign then goes out.. No spark.. All ancillaries were working fine and replaced with doner engine. The original engine did run but big ends had gone. thanks

 

[fingers99]

Check for fuel past the injector(s). No fuel past injectors and no spark always = duff TDC sensor.

 

[colinf1]

Check the crank sensor (bottom sensor near the alternator pully), it could be damaged or could be too far away from the toothed wheel to pick up the signal.

 

[s and b]

a weekly question with a weekly answer
make sure every earth is secure on the engine

 

[sailorjim]

Thanks I will check regards Pete.

 

[sailorjim]

Thanks I will check Regards Pete.

 

[DaveMcT]

Just read this, and I got muddled with the details (but hey thats no surprise ).

The car's own ECU should work fine as its is already linked with its body computer, immobiliser, etc. The engine's (donor) ECU will not work in the car.

The cam sensor can be ignored.

You could use the donor ECU but you would also need the remaining donor electronics and all the stuff they expect to see from the donor car. Its much easier to keep the car's electronics as they are.

 

[sailorjim]

Hi, changed crank sensor now got a spark but no fuel.

 

[s and b]

when you turn ignition to position 2 can you hear the pump priming the system?
if not find out why ,check relay under bonnet
if yes confirm fuel getting to fuel rail