Overheating? and Stalling

[89berlina]

Yes once again the VN is giving me dramas. Today I was cruising along as usual and the car shuddered and stalled. I went to start it again and it started immediately and seemed to idle fine. I then had it stall on me two more times before I got home. When I got home I looked at the engine and noticed coolant all over the motor. Found out that one of the hoses was badly perished and leaking. Also noticed that the motor was incrediblely hot. The temp however never went above the first mark on the gauge. Would a leaking coolant cause the car to stall?

[88GreenVN]

Yes once again the VN is giving me dramas. Today I was cruising along as usual and the car shuddered and stalled. I went to start it again and it started immediately and seemed to idle fine. I then had it stall on me two more times before I got home. When I got home I looked at the engine and noticed coolant all over the motor. Found out that one of the hoses was badly perished and leaking. Also noticed that the motor was incrediblely hot. The temp however never went above the first mark on the gauge. Would a leaking coolant cause the car to stall?

Not unless it was just about cooked or spraying onto the DFI unit some how.

Are you running the "new second hand ECU"?

[89berlina]

Not unless it was just about cooked or spraying onto the DFI unit some how.

Are you running the "new second hand ECU"?

Not sure if it was spraying on the electrics. Wouldnt say so. Yep Im running the second hand ECU at the moment

[88GreenVN]

Not sure if it was spraying on the electrics. Wouldnt say so. Yep Im running the second hand ECU at the moment

oily film over everything.

Have you swapped the coils/DFI over yet?

[89berlina]

oily film over everything.

Have you swapped the coils/DFI over yet?

Yeah sort of. Seemed like a oily film initially. Why's that? Yeah swapped Coils over with a Series 2 pack.

[88GreenVN]

Yeah sort of. Seemed like a oily film initially. Why's that? Yeah swapped Coils over with a Series 2 pack.

Coils = yes - What about the DFI?

Oily film is coolant squirting on every thing. Could be it.

[89berlina]

Coils = yes - What about the DFI?

Oily film is coolant squirting on every thing. Could be it.

Yeah sorry, also changed the ignition module if thats what you're talking about

[88GreenVN]

Yeah sorry, also changed the ignition module if thats what you're talking about

Do you know anyone with a VN - see if you can move the problem to their car by swapping bits over.

[89berlina]

Do you know anyone with a VN - see if you can move the problem to their car by swapping bits over.

No unfortunately I dont know anyone with a VN. Is there a possiblity that the car was shutting down to prevent the motor from seizing? The motor was really hot

[88GreenVN]

Get a new temp sensor asap (ecu one) not gauge. If the engine has been getting real hot - not good. Has it been loosing lots of coolant lately?

[89berlina]

Get a new temp sensor asap (ecu one) not gauge. If the engine has been getting real hot - not good. Has it been loosing lots of coolant lately?

The only coolant lost was from the damaged hose. It seemed to have sprayed everywhere. It was even dripping off the hoodlining. When I tested the temp sensor last time it was fine.

[88GreenVN]

The only coolant lost was from the damaged hose. It seemed to have sprayed everywhere. It was even dripping off the hoodlining. When I tested the temp sensor last time it was fine.

You have 2 temp sensors. If the engine is super hot and gauge says cold = problem.

Coolant leaking for the first time would be unlikely to be the stalling issue.

Start giving the wiring a good old wriggle while the car is running. If its a loose wire it will stall. ECU wires. DIF wires earths and CAS.

[89berlina]

You have 2 temp sensors. If the engine is super hot and gauge says cold = problem.

Coolant leaking for the first time would be unlikely to be the stalling issue.

Start giving the wiring a good old wriggle while the car is running. If its a loose wire it will stall. ECU wires. DIF wires earths and CAS.

Ive previously gone over every single wiring connection with my father, who's a Electrician, and it was all fine. Shouldnt be that but I'll check again

[88GreenVN]

Ive previously gone over every single wiring connection with my father, who's a Electrician, and it was all fine. Shouldnt be that but I'll check again

The car randomly stalling will normally only be a few things

CAS - beginig to look sus.
DFI/Coils - possibly sus too
ECU - (should be OK)
Connectivity of wires - (should be OK)

[centy]

coolant in the back ofthe cas maybe.
v6's run BLOODY hot
normal running temp is mid 90's damn near boiling and when you work them hard they go over boiling, that is why the hold so much pressure.

[89berlina]

The car randomly stalling will normally only be a few things

CAS - beginig to look sus.
DFI/Coils - possibly sus too
ECU - (should be OK)
Connectivity of wires - (should be OK)

Hope the CAS isnt stuffed. Its brand new. Might test the coils and DFI tomorrow. It was a very hot today and I did give the VN abit of a hard. Could this have possibly damaged the CAS and DFI/Coils?

coolant in the back ofthe cas maybe.
v6's run BLOODY hot
normal running temp is mid 90's damn near boiling and when you work them hard they go over boiling, that is why the hold so much pressure.

Well I have to admitt something. I was down a back industrial road and I did give it some when it gave up and stalled all of a sudden and it was a very hot day. Car started straight away so it cant be the ECU or CAS. Maybe DFI/Coils?

[lsprewell]

You have 2 temp sensors. If the engine is super hot and gauge says cold = problem.

Coolant leaking for the first time would be unlikely to be the stalling issue.

Start giving the wiring a good old wriggle while the car is running. If its a loose wire it will stall. ECU wires. DIF wires earths and CAS.

You do not have 2 temp sensors, please don't think that. You have a Temperature Sensor, and a Temperature Sender. The Sender is for your gauge and gauge only, and the sensor is for your ECU to know temp.

Also not sure exactly all the details, but look into your Crank Angle sensor. It could be playing up, especially if it got excessively hot. (hot water). Make sure all earth and power cables to battery and alternator are also in good condition and sercured tightly.

[88GreenVN]

You do not have 2 temp sensors, please don't think that. You have a Temperature Sensor, and a Temperature Sender. The Sender is for your gauge and gauge only, and the sensor is for your ECU to know temp.

Umm yep that'll be right. 1 sender and 1 sensor.

[89berlina]

You do not have 2 temp sensors, please don't think that. You have a Temperature Sensor, and a Temperature Sender. The Sender is for your gauge and gauge only, and the sensor is for your ECU to know temp.

Also not sure exactly all the details, but look into your Crank Angle sensor. It could be playing up, especially if it got excessively hot. (hot water). Make sure all earth and power cables to battery and alternator are also in good condition and sercured tightly.

Okay thanks. Ive just changed the Crank Angle Sensor so that shouldnt be the issue and when the car stalls it starts straight away.

Umm yep that'll be right. 1 sender and 1 sensor.

Ive changed my theory on the problem. Fixed a leaking coolant hose and the car still stalls. Think its just coincidence that the hose blew when the car started stalling. Dont think its a overheating problem but what I think it is, is a fuel issue. After fixing the hose the car seemed fine, so I filled it up and took it on a surf trip with some mates and travelled around 380 kms without any problems with a loaded car. On the way home though after the trip and unloading everyone and everything the car stalled. I noticed that my fuel was approaching empty. Just as last time when it stalled, I didnt have much fuel in the tank. (Mind you, enough though to make sure I dont kill the fuel pump) Only problem Ive been having is that it struggles to start now and then. The motor cranks fine but it takes about two go's most times to get it started and what I find is I can help it start by pressing the accelerator while its cranking. Thinking its a fuel pressure issue up front. The fuel pump is brand new as well as the fuel filter and fuel tank clean, so thats not the issue. Thinking it could be the injectors or fuel regulator. Any thoughts?

Thanks so far guys

[88GreenVN]

Okay thanks. Ive just changed the Crank Angle Sensor so that shouldnt be the issue and when the car stalls it starts straight away.



Ive changed my theory on the problem. Fixed a leaking coolant hose and the car still stalls. Think its just coincidence that the hose blew when the car started stalling. Dont think its a overheating problem but what I think it is, is a fuel issue. After fixing the hose the car seemed fine, so I filled it up and took it on a surf trip with some mates and travelled around 380 kms without any problems with a loaded car. On the way home though after the trip and unloading everyone and everything the car stalled. I noticed that my fuel was approaching empty. Just as last time when it stalled, I didnt have much fuel in the tank. (Mind you, enough though to make sure I dont kill the fuel pump) Only problem Ive been having is that it struggles to start now and then. The motor cranks fine but it takes about two go's most times to get it started and what I find is I can help it start by pressing the accelerator while its cranking. Thinking its a fuel pressure issue up front. The fuel pump is brand new as well as the fuel filter and fuel tank clean, so thats not the issue. Thinking it could be the injectors or fuel regulator. Any thoughts?

Thanks so far guys

The pickup may not be on the bottom of the tank. Try adding more fuel and see if the stalling stops - going 380 k you filled up to go away yes?

[89berlina]

The pickup may not be on the bottom of the tank. Try adding more fuel and see if the stalling stops - going 380 k you filled up to go away yes?

Yeah I actually put the pump in the tank when it was out of the car and made sure it was in the small reservoir in the bottom of the tank. Yeah filled it right up

[89berlina]

Just a question. How do I know for sure that I have a blown head gasket? I have a idea that could possibly be the problem

[voxbox]

Well.. it depends on how the gasket has blown. If you were losing a heap of coolant, yet there are no leaks that you can find, it might be a head gasket. Borrow a compression tester and crank the engine over.. if one cylinder is way down on the others, there's your problem. Have you had the cooling system pressure-tested?