1988 740 non turbo 2.3 l (cold start valve) issue
#1
1988 740 non turbo 2.3 l (cold start valve) issue
Hello everyone.
I have a 1988 740 wagon naturally aspirated that gives me problems starting when cold. And randomly will cut off.
I have changed fuel filter, both fuel pumps, distributor, harmonic balancer, rotor, spark plugs, wires, catalytic, resonator, muffler and fuel pump relay.
I do not know what could be causing these issues.
I read that the cold start valve, connecting wires, or crankshaft position sensor could be at fault. Has anyone experienced this issue? I also noticed the temperature gauge has an electrical fault causing the needle to bounce although the temp is stable.
Puzzled and confused.... Any help or ideas would be greatly appreciated.
Eric
I have a 1988 740 wagon naturally aspirated that gives me problems starting when cold. And randomly will cut off.
I have changed fuel filter, both fuel pumps, distributor, harmonic balancer, rotor, spark plugs, wires, catalytic, resonator, muffler and fuel pump relay.
I do not know what could be causing these issues.
I read that the cold start valve, connecting wires, or crankshaft position sensor could be at fault. Has anyone experienced this issue? I also noticed the temperature gauge has an electrical fault causing the needle to bounce although the temp is stable.
Puzzled and confused.... Any help or ideas would be greatly appreciated.
Eric
#2
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#4
I assume you realize there are 2 water temperature sensors. One for the gauge and the second one for the cold start function.
#5
The dash gauge temp sensor is in front with the cold start function/engine temp sensor in the back and the knock sensor in the middle...all underneath the intake manifold...correct?
#6
#8
#9
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#12
I replaced the distributor
Just replace the distributor which came complete with Rotor and hall sensor. If I do not have a crank position sensor, what could be causing the intermittent stall issue?
#13
Volvo 1362645 for the front sensor which is kinda rounded and has round plugs
Last edited by dytha99; 08-12-2016 at 09:01 AM.
#14
#16
Yes. Replaced complete distributor
Yes. Replaced complete distributor And still experiencing few random intermittent cut off while driving. I cleaned Mass Airflow Sensor also.
#17
Could the distributor be on wrong
The distributor was a complete distributor with the list price of $329 and a one-year warranty.
#18
#19
Just shuts off. Engine RPM drop to 0
I have driven it the past three days and not had it shut off on me once. Although randomly I could be driving with the car already warmed up and I'll notice the RPMs drop to zero. The car does not stumble but rather loses power. I typically will pull to the side shut the car off and turn it right back on again and it not shut off again for the rest of the day?
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