Volvo 240 wont go past 2k rpm once warmed up
#1
Volvo 240 wont go past 2k rpm once warmed up
I have a 1984 volvo 240 GL LH2.0, that runs ok it will rev up to redline although it does have a rough idle it revs up.. well until about 10 min of driving and once its warmed up, it starts bogging and wont go over 2k and sometimes 3k rpm. Sometimes if i give it barely any gas it will rev up slowly but if i put my foot down the rpm bounces slowly from 2k down, i changed the fuel filter about 4 times in 3 months each time was dirty, i also changed the intank pump 3 times i also did drain the tank. i just swapped the motor / block kept everything else sensors etc, i was having this issue before my swap so its got to be fuel related, my main fuel pump is mostly loud sometimes alittle quieter, i have 2 LH2.0 mass air flow sensors i swapped it still same. My thinking is i need to change the tank or wash it out, and change the filters and pumps once more? maybe convert to a single 255lph intank pump?, and change the 02 sensor i have a aftermarket one in, as well as the coolant temp sensor? its currently not reading anything but i was having this issue with my old motor and the coolant sensor was working.
Any advice would help thanks.
Any advice would help thanks.
#2
I have a 1984 volvo 240 GL LH2.0, that runs ok it will rev up to redline although it does have a rough idle it revs up.. well until about 10 min of driving and once its warmed up, it starts bogging and wont go over 2k and sometimes 3k rpm. Sometimes if i give it barely any gas it will rev up slowly but if i put my foot down the rpm bounces slowly from 2k down, i changed the fuel filter about 4 times in 3 months each time was dirty, i also changed the intank pump 3 times i also did drain the tank. i just swapped the motor / block kept everything else sensors etc, i was having this issue before my swap so its got to be fuel related, my main fuel pump is mostly loud sometimes alittle quieter, i have 2 LH2.0 mass air flow sensors i swapped it still same. My thinking is i need to change the tank or wash it out, and change the filters and pumps once more? maybe convert to a single 255lph intank pump?, and change the 02 sensor i have a aftermarket one in, as well as the coolant temp sensor? its currently not reading anything but i was having this issue with my old motor and the coolant sensor was working.
Any advice would help thanks.
Any advice would help thanks.
#3
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Sleipnir
Volvo 240, 740 & 940
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09-30-2017 06:08 AM