Hello everyone,

I took a look at the spark plugs today.

When removing them, I noticed that spark plugs 1, 3, and 5 were so loose from left to right that I could simply unscrew them with a socket without using the ratchet.

Furthermore, the spark plugs were damp and dirty. (See photos)

After I ...

Hello,

I bridged the fuel pump relay today (pin 15/87) but the problem still exists. So the problem is not with the relay. Next I'll look at the pump.

I know that the pump was replaced by the previous owner.

The following pump from Skandix was used, which is also not an original from Bosch ...

Hello everyone,

Thank you for the quick response.

I don't mean the brake rotors but the part in the picture.

According to the vehicle registration document, the year of manufacture is 1999.

If I enter the VIN at Skandix, 1999 is also displayed.

The first thing I'll do is get the following ...

Hello Neil,

Many thanks for the quick response.

I have the Hella brand coolant temperature sensor 6PT 009 107-281.

The fuel pressure is around 36 PSI (2.5 bar). Is this perhaps too low?

There are also other parts that I have replaced and these are not original Volvo or Bosch. I bought these from ...

The vehicle starts normally when it is cold and when it warms up it starts to jerk with a popping exhaust and stalls. Then it won't start at first. It only starts after several hours when it is cold again.

I have already changed the cooling temperature sensor. But unfortunately that didn't help.