Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Hard start when engine is cold

Old Sep 28, 2022 | 02:50 AM
  #1  
nedqlkow's Avatar
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Default Hard start when engine is cold

Hello colleagues,
I'll start with the important information first - the car is a Volvo 850 2.4 143 horsepower with gas injection installed.
In the last month there have been problems starting the engine, especially when it is cold (it has been idle for 7-8 hours).
At the same time, we found that there was no fuel in the fuel rail due to a faulty fuel pump, which we successfully replaced and now that the car starts, it is running normally. However, it often takes 6-7 attempts to start the engine.
So far we have replaced as follows:
  • Petrol pump
  • Intake air sensor
  • Fuel pressure sensor in the rail
For the moment, we are focused on 2 options - a sensor for the temperature of the antifreeze or an oxygen sensor before the catalyst.

However, I would like to hear what you think before we do anything.
Thanks!
 
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Old Sep 28, 2022 | 06:03 AM
  #2  
tonyfr's Avatar
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From: SAT-LAX-LAS
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Temp sensor.
 
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Old Sep 28, 2022 | 06:50 AM
  #3  
Dingus1's Avatar
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Posts: 651
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From: CT, USA
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+1 temp sensor
 
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