Fiat 500 1.3 Multijet 95 Diesel 2010 reg
My daughter’s car had big issues noisy, lost power you name it, its along story ………
Anyway was told it was oil pump. Timing chain and cover etc., she couldn’t afford garage repairs and as I’m retired and used to ‘Tinker’, bought a Haynes manual and said I’d give it a go …….
I had my suspicions and once sump dropped, Wallach! Bits of smashed up shell bearing and No 4 big end cap rattling away nicely.
Engine out crankshaft in a bad way No 4 con rod and big end cap knocked out.
Sent crankshaft to be re-ground, new oversized shells bearings all round and a replacement con rod.
Rebuilt engine new head gasket etc. Sump bolts to casing needed re-threading, thread coils and new bolts fitted.
On start up once fuel got through she stated and runs lovely.
BUT …. Oil light remains on and “insufficient oil pressure stop and turn off engine” warning, she has no power and will not rev over 3000.
Renewed oil switch in case defective, checked turbo operation all seems fine. Checked and rechecked every conne3ction to everything.
There is a clicking sound when engine revved but goes away when settled down to idle, she will start immediately the key is turned and will idle smoothly.
The Oil light remaining on and “insufficient oil pressure stop and turn off engine” warning is exactly the same as before I started .......

All suggestions gratefully received ...... thank you.

(re-posted as I posted in the wrong section)

No knowledge of Fiat diesel engines here ............ so take what I say on face value.

I too have had my fingers in engines over the years, so big ends and crank shafts are very familiar to me. Therefore I empathise with you.

The thing about these modern cars, is that they have a computer running things. The computer does all the monitoring and displays all the messages on the screen.

No doubt you disconnected the battery before you had the engine out. Can I suggest that you disconnect it again, go and have a cup of tea or a beer, and then reconnect and try again?

Failing that, you could do no worse than buy a copy of Multiecuscan and the attendant connectors and connect up to the the car and see what the computer says to you. It maybe that you can view some errors logged and that is what is being shown, and not actual fact at the moment. Hopefully you can cancel these errors.

No expert here, just giving my two-penny-worth, and I could be teaching my grandmother to suck eggs ....... if so, i apologise. :worship:

Good luck,
Mick.

First, get a proper oil pressure gauge to read the actual oil pressure, don't rely on a pressure switch, my gut feeling is try to find a replacement engine and cut your losses?

Mick F said:

No knowledge of Fiat diesel engines here ............ so take what I say on face value.

I too have had my fingers in engines over the years, so big ends and crank shafts are very familiar to me. Therefore I empathise with you.

The thing about these modern cars, is that they have a computer running things. The computer does all the monitoring and displays all the messages on the screen.

No doubt you disconnected the battery before you had the engine out. Can I suggest that you disconnect it again, go and have a cup of tea or a beer, and then reconnect and try again?

Failing that, you could do no worse than buy a copy of Multiecuscan and the attendant connectors and connect up to the the car and see what the computer says to you. It maybe that you can view some errors logged and that is what is being shown, and not actual fact at the moment. Hopefully you can cancel these errors.

No expert here, just giving my two-penny-worth, and I could be teaching my grandmother to suck eggs ....... if so, i apologise. :worship:

Good luck,
Mick.

Click to expand...

Thank you Mick ...... Yes I know what you mean about the computer side of today's engines, for me if its mechanical I usually get it sorted, my fist engine strip was a Viva HA back in 1970 Label every nut and bolt and put it back together ......... anyway I'm told the engine is in 'Limp Mode' because something is not working correctly.
I have Foxwell NT301 OBD2 Scanner Car Fault Code Reader and its showing no error codes ........

Not sure about disconnecting battery as it was off completly when engine was out, I'm thinking it may have something to do with the ECU but i dont know how to check it .....

First thing is to disconnect the battery, leave it an hour or so, and reconnect.
That cures lots of issues.
It's like any computer. Switch it off, let it settle, then reboot and keep your fingers crossed.

Other than that, you need a copy of Multiecuscan to connect up to the OBD and see what transpires.
No expert on this, but there are many folk on here that are.

Mick.

Like others have said oil pressure gauge will tell you more but more info needed.
I'm assuming oil pump, oil filter are new and oilways cleared of any debris that may have migrated from the failed bearing ?
As a quick check you could check the filter has filled with oil and if ok you could remove the pressure sensor and disable the fuel injection( to stop it starting) then a short spin of the engine should have oil squirting out the hole if not then work back from that .

Like others have said oil pressure gauge will tell you more but more info needed.
I'm assuming oil pump, oil filter are new and oilways cleared of any debris that may have migrated from the failed bearing ?
As a quick check you could check the filter has filled with oil and if ok you could remove the pressure sensor and disable the fuel injection( to stop it starting) then a short spin of the engine should have oil squirting out the hole if not then work back from that .

Does your car have a DPF? I'm aware they can cause problems.

Once cleaned, does the oil light need to be reset?

pasotibbs said:

Like others have said oil pressure gauge will tell you more but more info needed.
I'm assuming oil pump, oil filter are new and oilways cleared of any debris that may have migrated from the failed bearing ?
As a quick check you could check the filter has filled with oil and if ok you could remove the pressure sensor and disable the fuel injection( to stop it starting) then a short spin of the engine should have oil squirting out the hole if not then work back from that .

Click to expand...

Thank you for your response, all said is new and all those checks done and correct .......

glenn2602 said:

Does your car have a DPF? I'm aware they can cause problems.

Once cleaned, does the oil light need to be reset?

Click to expand...

DPF ???

Raymondo555 said:

DPF ???

Click to expand...

Diesel particulate filter, basically it catches all the soot at low rev city driving then burns this soot off at higher speed country and motorway driving. If only driven on short journeys in town then this can clog up and block the exhaust, also worth checking the exhaust gas recirculation valve which can be problematic on these engines and although the turbo seems ok is it actually working properly? Grit and debris from the engine could have got in to the turbo and damaged it.

Well worth looking at getting MultiECUscan as fiats uses a lot of different modules in the electronics, faults don't always show up on off the shelf scanners

Also did you use 0-30 oil, these engines can be very touchy about using any thicker oil

AndyRKett said:

Diesel particulate filter, basically it catches all the soot at low rev city driving then burns this soot off at higher speed country and motorway driving. If only driven on short journeys in town then this can clog up and block the exhaust, also worth checking the exhaust gas recirculation valve which can be problematic on these engines and although the turbo seems ok is it actually working properly? Grit and debris from the engine could have got in to the turbo and damaged it.

Well worth looking at getting MultiECUscan as fiats uses a lot of different modules in the electronics, faults don't always show up on off the shelf scanners

Click to expand...

I have a mechanic friend coming tomorrow with his Scanner in the hope he can find something .... with regard to The DPF and the EGR, while the crankshaft was away being re-ground I stripped everything else and cleared and cleaned all components and reassembled them. My son (who knows a lot more than me about turbos) checked out the turbo while it was off and again when I had it running. The Oil is 5W30 fully synthetic ……. The photo is the actual engine stripped out. https://www.dropbox.com/s/u79adu1ltet8efl/20170808_150434.jpg?dl=0