V6 2.5 auto hot start problem - Page 8

Shuriken_57 · 23rd May 2021, 16:46

I think I’m going to stop working on the 75.

I’ve been fighting with the vehicle for three months. I still have my hot start problem, unstable idle and the engine is not running smoothly (and other problems).

I only have the codes P0151 and p0155 which appear randomly (I changed the sensor without success).

Good evening.

SD1too · 24th May 2021, 06:36

Taking a break is a good idea Brahim. It can bring new inspiration.

Simon

Shuriken_57 · 4th June 2021, 19:39

Hello gentlemen. Today, I was waiting for a friend ,the engine was idling but it cut off ( it remained about 9 liters according to the ipk).

The car wouldn't start but i put back 10 liters and it started right away.
I think I’ll try to find a fuel pump.
Thank you for your answers.

bsafly · 4th June 2021, 21:44

I always fill my fuel tank on all my cars before I get down to a quarter of a tank, saves any doubt about running out of fuel and I wouldn't necessarily believe your fuel readings when you get near the bottom of the tank.
Are you absolutely sure that you actually have 9 litres of fuel in the tank when the IPK tells you that, you could check by brimming the tank after it cuts out and subtracting that amount from the tank capacity - then you would be in no doubt if/how much fuel remains in the tank when your car cuts out as the fuel tank capacity is a known given (65 litres).
Good luck with your investigations.

SD1too · 5th June 2021, 07:22

Quote:

Originally Posted by Shuriken_57

Hello gentlemen. Today, I was waiting for a friend ,the engine was idling but it cut off ( it remained about 9 litres according to the ipk). The car wouldn't start but i put back 10 litres and it started right away.

Please see post no. 35 for my suggestion on this.

Simon

Shuriken_57 · 5th June 2021, 10:25

Quote:

Originally Posted by bsafly

I always fill my fuel tank on all my cars before I get down to a quarter of a tank, saves any doubt about running out of fuel and I wouldn't necessarily believe your fuel readings when you get near the bottom of the tank.
Are you absolutely sure that you actually have 9 litres of fuel in the tank when the IPK tells you that, you could check by brimming the tank after it cuts out and subtracting that amount from the tank capacity - then you would be in no doubt if/how much fuel remains in the tank when your car cuts out as the fuel tank capacity is a known given (65 litres).
Good luck with your investigations.

Hello, yes I had about 9 liters of fuel left. I have already had the same problem several times (see previous posts). This is not a gauge problem because it works perfectly. I have already run into fuel reserve after fixing my fuel leak, it has not stalled.

But I never manage to put more than 52 liters in my fuel tank when the reserve lights up ( ipk gives 57 liters when the tank is full, 57 liters on my other two 75 diesel).

I will check the pump.
Thank you

Shuriken_57 · 11th June 2021, 18:35

Quote:

Originally Posted by Shuriken_57

Hello, yes I had about 9 liters of fuel left. I have already had the same problem several times (see previous posts). This is not a gauge problem because it works perfectly. I have already run into fuel reserve after fixing my fuel leak, it has not stalled.

But I never manage to put more than 52 liters in my fuel tank when the reserve lights up ( ipk gives 57 liters when the tank is full, 57 liters on my other two 75 diesel).

I will check the pump.
Thank you

I've changed the pump the problem is still there .

SD1too · 12th June 2021, 10:14

Quote:

Originally Posted by Shuriken_57

I've changed the pump ...

Did that include a new rheostat for the gauge circuit?

Simon

Shuriken_57 · 12th June 2021, 18:34

Quote:

Originally Posted by SD1too

Did that include a new rheostat for the gauge circuit?

Simon

Yes Simon.

SD1too · 13th June 2021, 06:57

Isn't there a rheostat on the filter side as well?

I'm not suggesting that you change that, only that some measurements might help check that the fuel gauge is telling the truth.

Simon

23rd May 2021, 16:46	#71
Shuriken_57 Avid contributor Rover 75 Join Date: Jan 2019 Location: Freyming-Merlebach Posts: 212 Thanks: 104 Thanked 21 Times in 12 Posts	I think I’m going to stop working on the 75. I’ve been fighting with the vehicle for three months. I still have my hot start problem, unstable idle and the engine is not running smoothly (and other problems). I only have the codes P0151 and p0155 which appear randomly (I changed the sensor without success). Good evening. Last edited by Shuriken_57; 23rd May 2021 at 17:12..

24th May 2021, 06:36	#72
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,344 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Taking a break is a good idea Brahim. It can bring new inspiration. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

4th June 2021, 19:39	#73
Shuriken_57 Avid contributor Rover 75 Join Date: Jan 2019 Location: Freyming-Merlebach Posts: 212 Thanks: 104 Thanked 21 Times in 12 Posts	Hello gentlemen. Today, I was waiting for a friend ,the engine was idling but it cut off ( it remained about 9 liters according to the ipk). The car wouldn't start but i put back 10 liters and it started right away. I think I’ll try to find a fuel pump. Thank you for your answers. Last edited by Shuriken_57; 4th June 2021 at 19:41..

13th June 2021, 06:57	#80
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,344 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Isn't there a rheostat on the filter side as well? I'm not suggesting that you change that, only that some measurements might help check that the fuel gauge is telling the truth. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

4th June 2021, 21:44	#74
bsafly Just going about! Rover 75 CDTi Connie SE Tourer starlight silver and serpents. MG ZT-T 190+ in Raven Black. Join Date: Mar 2016 Location: Great Leighs Posts: 468 Thanks: 626 Thanked 167 Times in 110 Posts	I always fill my fuel tank on all my cars before I get down to a quarter of a tank, saves any doubt about running out of fuel and I wouldn't necessarily believe your fuel readings when you get near the bottom of the tank. Are you absolutely sure that you actually have 9 litres of fuel in the tank when the IPK tells you that, you could check by brimming the tank after it cuts out and subtracting that amount from the tank capacity - then you would be in no doubt if/how much fuel remains in the tank when your car cuts out as the fuel tank capacity is a known given (65 litres). Good luck with your investigations.