He ended up replacing the check valve on the main fuel pump. Even though the residual pressure checked out when we made the video, that was, apparently, the problem. He hasn't had the hot start issue occur since he replaced it. We can only assume that the check valve was sticking intermittently. Good luck with your Volvo. Keep it rolling!
my 89 240 wagon does not have a schrader valve on the fuel rail. how and where do i connect a pressure guage to check fuel pressure? thanks for your guidance.
I have the same car, and I have a problem that I can't seem to track down. It's running really badly, (chugging and very little power) The engine code says it's lean at part load, so I replaced the MAF sensor, the fuel pressure gauge, and I've already replaced the in-line fuel pump and fuel filter. I'm thinking about replacing all the vacuum lines, the coolant temp sensor, and the in-tank fuel pump. Do any of those sound like a likely solution, or do you have any thoughts on what the issue might be?
Check for an exhaust leak between the catalytic converter and the pipe from the manifold,(feel for air coming out with the engine running don't touch the exhaust it can get terribly hot) if air is allowed to get in the car a will run nasty like lope at idle and smell super rich once warm because the O2 sensor will be reading the wrong mixture and think its running lean, also try to clean injectors they could be clogged does it run bad when its cold?
You also might want to check the ECT for the fuel injection, this car has two one for the temp gauge and one farther back for the fuel injection under the no. 4 intake manifold runner if it goes whacky that would mess up you fuel air mixture, mxslotkin has a good point with the intake gasket spray around where the intake meets the head with carb cleaner when he car is running listen for a change in rpm if the rpm goes up you have an intake gasket leak, and at idle and part load intake vacuum is highest so it would be sucking in air from where its not supposed to be leaning the A/Fuel mix out
can you test the fuel pressure if the car cranks but wont start? I have a 1990 240 that has spark but no fuel getting to the plugs, fuel relay clicks and the fuel pump hums so now I need to figure out where the fuel is being stopped up
Did you get that problem fixed? My 92 240 sedan cranks but doesn't start. When it fires a bit white smoke come out the exhaust. I think it's running lean. No white smoke from the engine bay. Any help would be great, please and thank you!
Hello there gents. I have a question about doing the clutch on my 92 240 wagon. Whats the best way the get the drive line off? Im having all kinds of problems with it right now.
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He ended up replacing the check valve on the main fuel pump. Even though the residual pressure checked out when we made the video, that was, apparently, the problem. He hasn't had the hot start issue occur since he replaced it. We can only assume that the check valve was sticking intermittently. Good luck with your Volvo. Keep it rolling!
Awesome tutorial☝🏽👌👍👏🏿
my 89 240 wagon does not have a schrader valve on the fuel rail. how and where do i connect a pressure guage to check fuel pressure? thanks for your guidance.
Did you guys ever figure out what the problem was? My volvo has the exact same problem. Thanks for the informative video.
What test port? Where did you hook the gauge up at?
I have the same car, and I have a problem that I can't seem to track down. It's running really badly, (chugging and very little power) The engine code says it's lean at part load, so I replaced the MAF sensor, the fuel pressure gauge, and I've already replaced the in-line fuel pump and fuel filter. I'm thinking about replacing all the vacuum lines, the coolant temp sensor, and the in-tank fuel pump. Do any of those sound like a likely solution, or do you have any thoughts on what the issue might be?
Check for an exhaust leak between the catalytic converter and the pipe from the manifold,(feel for air coming out with the engine running don't touch the exhaust it can get terribly hot) if air is allowed to get in the car a will run nasty like lope at idle and smell super rich once warm because the O2 sensor will be reading the wrong mixture and think its running lean, also try to clean injectors they could be clogged
does it run bad when its cold?
To go along with wagonman, I had a bad intake gasket that made it run pretty poorly. Pretty easy job and the gaskets not expensive. worth doing.
You also might want to check the ECT for the fuel injection, this car has two one for the temp gauge and one farther back for the fuel injection under the no. 4 intake manifold runner if it goes whacky that would mess up you fuel air mixture, mxslotkin has a good point with the intake gasket spray around where the intake meets the head with carb cleaner when he car is running listen for a change in rpm if the rpm goes up you have an intake gasket leak, and at idle and part load intake vacuum is highest so it would be sucking in air from where its not supposed to be leaning the A/Fuel mix out
Very useful info, thank you for sharing... what is ECT?
Engine Coolant Temperature :)
Volvo power!
3:08 , you might want to check your right engine mount
+Peter Herrmann first thing i thought when i saw the motor jump on start
can you test the fuel pressure if the car cranks but wont start? I have a 1990 240 that has spark but no fuel getting to the plugs, fuel relay clicks and the fuel pump hums so now I need to figure out where the fuel is being stopped up
Did you get that problem fixed? My 92 240 sedan cranks but doesn't start. When it fires a bit white smoke come out the exhaust. I think it's running lean. No white smoke from the engine bay. Any help would be great, please and thank you!
Hello there gents. I have a question about doing the clutch on my 92 240 wagon. Whats the best way the get the drive line off? Im having all kinds of problems with it right now.
So what was this car's issue?