Messed up my 89' 240
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Joined: May 2015
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From: Tennessee
Messed up my 89' 240
Hey all, I have had a very long rough day with my 240 wagon and need a little advice. It's been a long day so please stick with me here.
Since I'm a student I do my own car repairs in general when I can, so I decided that since the injectors are original that I might as well replace them. The ones I ordered were rebuilt bosch from ebay, and have the "4 hole" sprayer while the old have a needle. The car was running rich and injectors are probably the only thing that hasn't been replaced.
All went well with the injectors, and I moved the car a few parking spots down to park outside my apartment window (for electricity if needed). I then replaced the in tank fuel pump. When the last pump died, I installed an aftermarket, and it seemed to have died. With a multimeter it showed some draw from the pump but no life, so I swapped it for another one today. The new pump was too long and needed modification, and I cut and spliced wires together for the new harness (I guess I should test for continuity tomorrow on these). After this the car just would not run right. I started it up and it idles alright, but seems to keep dropping about 100-200 RPMs in a pattern. When I give it any gas the engine starts violently shaking, tries to stall/sometimes does stall.
So I installed the old pump back in, and was able to move the car to a more safe spot to work on it/keep it sitting. It runs better but when getting a little gas it "catches" like it is about to stall, but quickly recovers. The car is too loud to work on during the night hours so I had to hang it up. The show gathered a crowd of residents who know a little about cars, and a few thought the new pump may be clogging.
Here's a small list off the top of my head of all that has been replaced by me. Some may or may not be important.
Timing belt
Coolant temp sensor
Crank position sensor
New wires, plugs, cap, and rotar
Fuel pressure regulator
Throttle position sensor (adjusted only)
Intake manifold and exhaust gaskets
Main fuel pump (bosch) and filter
Fuel pump relay
There may be more but nothing very important. This wagon has 56k miles on the clock with all service records, but at this point everything is old and going. For a very long time it has run rich with a bit of a gas smell from the exhaust which is why I have replaced so many odds and ends.
I may be a bit slow at getting back but dang do I miss this car. I bought it as a first car and after 5 years nothing compares or can replace it.
Since I'm a student I do my own car repairs in general when I can, so I decided that since the injectors are original that I might as well replace them. The ones I ordered were rebuilt bosch from ebay, and have the "4 hole" sprayer while the old have a needle. The car was running rich and injectors are probably the only thing that hasn't been replaced.
All went well with the injectors, and I moved the car a few parking spots down to park outside my apartment window (for electricity if needed). I then replaced the in tank fuel pump. When the last pump died, I installed an aftermarket, and it seemed to have died. With a multimeter it showed some draw from the pump but no life, so I swapped it for another one today. The new pump was too long and needed modification, and I cut and spliced wires together for the new harness (I guess I should test for continuity tomorrow on these). After this the car just would not run right. I started it up and it idles alright, but seems to keep dropping about 100-200 RPMs in a pattern. When I give it any gas the engine starts violently shaking, tries to stall/sometimes does stall.
So I installed the old pump back in, and was able to move the car to a more safe spot to work on it/keep it sitting. It runs better but when getting a little gas it "catches" like it is about to stall, but quickly recovers. The car is too loud to work on during the night hours so I had to hang it up. The show gathered a crowd of residents who know a little about cars, and a few thought the new pump may be clogging.
Here's a small list off the top of my head of all that has been replaced by me. Some may or may not be important.
Timing belt
Coolant temp sensor
Crank position sensor
New wires, plugs, cap, and rotar
Fuel pressure regulator
Throttle position sensor (adjusted only)
Intake manifold and exhaust gaskets
Main fuel pump (bosch) and filter
Fuel pump relay
There may be more but nothing very important. This wagon has 56k miles on the clock with all service records, but at this point everything is old and going. For a very long time it has run rich with a bit of a gas smell from the exhaust which is why I have replaced so many odds and ends.
I may be a bit slow at getting back but dang do I miss this car. I bought it as a first car and after 5 years nothing compares or can replace it.
no mo volvo
Joined: Oct 2010
Posts: 11,289
Likes: 109
From: 37 North on the left coast
our 240 went 500K miles on the original injectors, never needed replacing.
it got a new timing belt every 60k miles, new water pump every 120-180k (2-3 timing belts). transmission was rebuilt once. not sure I ever had to replace the fuel pressure regulator, but I know they can fail, unusually spraying fuel out the vacuum hose. fuel pumps were done a couple times in 500K. never needed a head gasket, or manifold gaskets (my 740 turbo did need a head gasket at around 250k). it went through a couple fuel pump relays.
wires/plugs/cap/rotor are regular maintenance items, I think we generally did the plugs at 30k and the wires/rotor as needed per visual inspection.
it got a new timing belt every 60k miles, new water pump every 120-180k (2-3 timing belts). transmission was rebuilt once. not sure I ever had to replace the fuel pressure regulator, but I know they can fail, unusually spraying fuel out the vacuum hose. fuel pumps were done a couple times in 500K. never needed a head gasket, or manifold gaskets (my 740 turbo did need a head gasket at around 250k). it went through a couple fuel pump relays.
wires/plugs/cap/rotor are regular maintenance items, I think we generally did the plugs at 30k and the wires/rotor as needed per visual inspection.
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Joined: May 2015
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From: Tennessee
It was reccomended I replace the injectors with some that "had a better spray pattern", and since I thought maybe an injector was leaking I might as well try it.
Your service schedule is now in my notes. I'd love to have this get 500k miles! It just seems to go kicking and screaming along the way. This issue is really upsetting and is the second major breakdown in 60 days or so. Since I'm in school my family is really pressuring me to "Take it to pull-a-part" or "Sell it for cheap".
This issue it just so weird and new.
Your service schedule is now in my notes. I'd love to have this get 500k miles! It just seems to go kicking and screaming along the way. This issue is really upsetting and is the second major breakdown in 60 days or so. Since I'm in school my family is really pressuring me to "Take it to pull-a-part" or "Sell it for cheap".
This issue it just so weird and new.
Senior Member
Joined: Jan 2006
Posts: 1,792
Likes: 52
You really ought to stay with the original injectors or at least if you replace them you need to do it with the same flow rate at the pressure put out by the LH 2.4 system. Otherwise it will not run properly. Same with the fuel pumps. You should use a Bosch main pump for the LH 2.4 system ('89 through '93). The in-tank pump used by Volvo was an AC Delco pump (I believe). Quality parts will last longer and are really more cost efficient in the long run.
If your car was running rich, it more than likely was not because of the injectors. Faulty or missing oxygen sensor and leaks in the exhaust system upstream of the oxygen sensor are to common causes of a rich running 240. Also, if the in-tank pump is fixed right away when it fails, the main pump rarely fails. Don't assume that because the parts are old that they need replacing. My '90 240 has original injectors and original main pump and works just fine. I'm impressed how quiet the main pump is. At the first sign of it making noise, check the in-tank pump because that is usually the cause.
If your car was running rich, it more than likely was not because of the injectors. Faulty or missing oxygen sensor and leaks in the exhaust system upstream of the oxygen sensor are to common causes of a rich running 240. Also, if the in-tank pump is fixed right away when it fails, the main pump rarely fails. Don't assume that because the parts are old that they need replacing. My '90 240 has original injectors and original main pump and works just fine. I'm impressed how quiet the main pump is. At the first sign of it making noise, check the in-tank pump because that is usually the cause.
Thread Starter
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Member
Joined: May 2015
Posts: 43
Likes: 0
From: Tennessee
You really ought to stay with the original injectors or at least if you replace them you need to do it with the same flow rate at the pressure put out by the LH 2.4 system. Otherwise it will not run properly. Same with the fuel pumps. You should use a Bosch main pump for the LH 2.4 system ('89 through '93). The in-tank pump used by Volvo was an AC Delco pump (I believe). Quality parts will last longer and are really more cost efficient in the long run.
If your car was running rich, it more than likely was not because of the injectors. Faulty or missing oxygen sensor and leaks in the exhaust system upstream of the oxygen sensor are to common causes of a rich running 240. Also, if the in-tank pump is fixed right away when it fails, the main pump rarely fails. Don't assume that because the parts are old that they need replacing. My '90 240 has original injectors and original main pump and works just fine. I'm impressed how quiet the main pump is. At the first sign of it making noise, check the in-tank pump because that is usually the cause.
If your car was running rich, it more than likely was not because of the injectors. Faulty or missing oxygen sensor and leaks in the exhaust system upstream of the oxygen sensor are to common causes of a rich running 240. Also, if the in-tank pump is fixed right away when it fails, the main pump rarely fails. Don't assume that because the parts are old that they need replacing. My '90 240 has original injectors and original main pump and works just fine. I'm impressed how quiet the main pump is. At the first sign of it making noise, check the in-tank pump because that is usually the cause.
What do you reccomend for a replacement in tank? I need to make sure my in tank pump is getting voltage since it is odd for two pumps to show no life. I get voltage with the multimeter so it really should be working.. Anyways I was looking at this aftermarket performance kit, or an more original pump.
https://www.ebay.com/itm/340LPH-In-t...0/331354985557
https://www.ebay.com/itm/New-Acdelco...7/381576947864
Senior Member
Joined: Jan 2006
Posts: 1,792
Likes: 52
This is what I would get:
https://www.fcpeuro.com/products/vol...-delco-3507436
If you can find a non-Volvo branded AC Delco pump you might save a few dollars. However, keep in mind you will need to replace the hose in your tank as your taller pump likely required you to shorten the hose you currently have in order to fit. This pump should fit just like the original. This hose must be submersible - not just fuel line hose. See the link below for more info.
For full diagnosis of your fuel system issues you should read this page:
In the Tank - 240 Volvo Tank Pump and Sender
https://www.fcpeuro.com/products/vol...-delco-3507436
If you can find a non-Volvo branded AC Delco pump you might save a few dollars. However, keep in mind you will need to replace the hose in your tank as your taller pump likely required you to shorten the hose you currently have in order to fit. This pump should fit just like the original. This hose must be submersible - not just fuel line hose. See the link below for more info.
For full diagnosis of your fuel system issues you should read this page:
In the Tank - 240 Volvo Tank Pump and Sender
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amtedder
Volvo 240, 740 & 940
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Aug 14, 2017 04:56 PM
