VOLVO D12

D12D and D12C are best Volvo engines, but I'd prefere Celect plus. Cheaper parts, easier to purchase, any truck shop will help me

 

Celect Plus = ECM and other electrical problems, fretting, leaking head gaskets, no one does ECM tuning for more power and less fuel consumption, expensive parts in Finland and only from Cummins shops.

 

I concidser celect plus one of the best ECMs, it is not so reliable like CAT, but it is easy to disassebly to fix.

Celect plus is a good engine. Cummins ISX with HPI is good if it is E3 version w/o EGR and other emission stuff. Newer EPA 2010/Euro-V ISX with EGR and SCR is too expencive toy. Disadvantages of all this emission thingis are well known!

 

My friend has burned 2 Celect Plus ECMs during the years, from the same truck. One failed and gave full power all the time until you switched ignition off, full power full speed! It was quite dangerous to drive home. Also others have had lot's of problems with them, and they are quite expensive.

Can you repair them if it fails again?

 

sometimes they are repareble, sometimes not. Everething depend on internal damage.

are bad ECMs not trashed now?
What truck is this N14 is installed? is it J1939 controlled (with VECU)?

 

long story short - it is caused with damaged C/C wires in cabinne, if you change ECM and keep wiring as is, new ECM fails later. It is an issue of COE application, and driving on bad roads. Check cab-chassis wiring.

 

Sisu cab over tipper truck, 530hp Finland special, with Road Relay. Bad ECM is exchanged, send to Cummins I think. We tried to use Pittsburgh Power Box but it always missed on cylinder number 1 when box was turned on, never found the reason for that.

 

It may be power supply issue. as I know Sisu electrical system is 24 V. And control unit may be faulty, bad injector MOSFET.

 

Check your egr valves. My egr valves went bad and I was only getting about 5.5 to 5.8 loaded. Use to get arount 8 mpg before they died. But you will crap Your self when you see each egr valve runs about $1200.00 per egr and that's not including labor to change them out.