2005 S40 i5 Throttle Body Idle Speed relearn?
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2005 S40 i5 Throttle Body Idle Speed relearn?
My son's 2005 Volvo S40 2.4L i5 (no turbo) suddenly started running rough. I checked the OBD2 codes and learned the car had many issues. It was very odd because until this day everything worked great on the car. The codes in the OBD2 were as follows:
1) P0190 Fuel Pressure Rail sensor
2) P0089 Fuel Pressure Regulator Performance
3) P0121 Throttle / Pedal Position Sensor A Circuit Range / Performance
4) P0336 Crankshaft Position Sensor A Circuit Range / Performance
5) P0190 Fuel Rail Pressure Sensor
6) P0089 Fuel Pressure Regulator Performance
7) P0121 Throttle / Pedal Position Sensor A Circuit Range / Performance
8) P0336 Crankshaft Position Sensor A Circuit Range / Performance
WoW that was a lot to go wrong in 1 day. So I started fixing stuff 1 at a time and doing routine maintenance on the car. After all it does have 150,000 miles on it. Still 150K left in it though ( I hope).
1) Change oil, filters, and spark plugs - no effect
2) Installed new Fuel Rail Pressure sensor - Marginal improvement. Still difficult to start. I have to mat the accelerator in order start the car. Then the car runs and idles rough.
Everything I saw online, read, and learned form mechanics was that the throttle body sensors may be reading different potentials. So....
3) I removed the throttle body and cleaned it thoroughly - No improvement
So....
4) I purchased a remanufactured throttle body assembly. The best priced t-body I could find was from CARid. All the spec's and info looked the same as the t body's form NAPA or even Volvo direct.
However, there was a tag on the throttle body (and I also read) that an "Idle Speed Relearn" must be performed and that I should refer to the vehicles service manual for the latest procedure. I do not have the service manuals for a 2005 Volvo S40 with 2.4L i5.
Can anyone please share the "Idle Speed Relearn" procedure with me?
Thank you!
1) P0190 Fuel Pressure Rail sensor
2) P0089 Fuel Pressure Regulator Performance
3) P0121 Throttle / Pedal Position Sensor A Circuit Range / Performance
4) P0336 Crankshaft Position Sensor A Circuit Range / Performance
5) P0190 Fuel Rail Pressure Sensor
6) P0089 Fuel Pressure Regulator Performance
7) P0121 Throttle / Pedal Position Sensor A Circuit Range / Performance
8) P0336 Crankshaft Position Sensor A Circuit Range / Performance
WoW that was a lot to go wrong in 1 day. So I started fixing stuff 1 at a time and doing routine maintenance on the car. After all it does have 150,000 miles on it. Still 150K left in it though ( I hope).
1) Change oil, filters, and spark plugs - no effect
2) Installed new Fuel Rail Pressure sensor - Marginal improvement. Still difficult to start. I have to mat the accelerator in order start the car. Then the car runs and idles rough.
Everything I saw online, read, and learned form mechanics was that the throttle body sensors may be reading different potentials. So....
3) I removed the throttle body and cleaned it thoroughly - No improvement
So....
4) I purchased a remanufactured throttle body assembly. The best priced t-body I could find was from CARid. All the spec's and info looked the same as the t body's form NAPA or even Volvo direct.
However, there was a tag on the throttle body (and I also read) that an "Idle Speed Relearn" must be performed and that I should refer to the vehicles service manual for the latest procedure. I do not have the service manuals for a 2005 Volvo S40 with 2.4L i5.
Can anyone please share the "Idle Speed Relearn" procedure with me?
Thank you!
Last edited by Seeker; Jul 30, 2020 at 04:52 PM.
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Junior Member
Joined: Jul 2020
Posts: 3
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My son's 2005 Volvo S40 2.4L i5 (no turbo) suddenly started running rough. I checked the OBD2 codes and learned the car had many issues. It was very odd because until this day everything worked great on the car. The codes in the OBD2 were as follows:
1) P0190 Fuel Pressure Rail sensor
2) P0089 Fuel Pressure Regulator Performance
3) P0121 Throttle / Pedal Position Sensor A Circuit Range / Performance
4) P0336 Crankshaft Position Sensor A Circuit Range / Performance
5) P0190 Fuel Rail Pressure Sensor
6) P0089 Fuel Pressure Regulator Performance
7) P0121 Throttle / Pedal Position Sensor A Circuit Range / Performance
8) P0336 Crankshaft Position Sensor A Circuit Range / Performance
WoW that was a lot to go wrong in 1 day. So I started fixing stuff 1 at a time and doing routine maintenance on the car. After all it does have 150,000 miles on it. Still 150K left in it though ( I hope).
1) Change oil, filters, and spark plugs - no effect
2) Installed new Fuel Rail Pressure sensor - Marginal improvement. Still difficult to start. I have to mat the accelerator in order start the car. Then the car runs and idles rough.
Everything I saw online, read, and learned form mechanics was that the throttle body sensors may be reading different potentials. So....
3) I removed the throttle body and cleaned it thoroughly - No improvement
So....
4) I purchased a remanufactured throttle body assembly. The best priced t-body I could find was from CARid. All the spec's and info looked the same as the t body's form NAPA or even Volvo direct.
However, there was a tag on the throttle body (and I also read) that an "Idle Speed Relearn" must be performed and that I should refer to the vehicles service manual for the latest procedure. I do not have the service manuals for a 2005 Volvo S40 with 2.4L i5.
Can anyone please share the "Idle Speed Relearn" procedure with me?
Thank you!
1) P0190 Fuel Pressure Rail sensor
2) P0089 Fuel Pressure Regulator Performance
3) P0121 Throttle / Pedal Position Sensor A Circuit Range / Performance
4) P0336 Crankshaft Position Sensor A Circuit Range / Performance
5) P0190 Fuel Rail Pressure Sensor
6) P0089 Fuel Pressure Regulator Performance
7) P0121 Throttle / Pedal Position Sensor A Circuit Range / Performance
8) P0336 Crankshaft Position Sensor A Circuit Range / Performance
WoW that was a lot to go wrong in 1 day. So I started fixing stuff 1 at a time and doing routine maintenance on the car. After all it does have 150,000 miles on it. Still 150K left in it though ( I hope).
1) Change oil, filters, and spark plugs - no effect
2) Installed new Fuel Rail Pressure sensor - Marginal improvement. Still difficult to start. I have to mat the accelerator in order start the car. Then the car runs and idles rough.
Everything I saw online, read, and learned form mechanics was that the throttle body sensors may be reading different potentials. So....
3) I removed the throttle body and cleaned it thoroughly - No improvement
So....
4) I purchased a remanufactured throttle body assembly. The best priced t-body I could find was from CARid. All the spec's and info looked the same as the t body's form NAPA or even Volvo direct.
However, there was a tag on the throttle body (and I also read) that an "Idle Speed Relearn" must be performed and that I should refer to the vehicles service manual for the latest procedure. I do not have the service manuals for a 2005 Volvo S40 with 2.4L i5.
Can anyone please share the "Idle Speed Relearn" procedure with me?
Thank you!
https://video.search.yahoo.com/yhs/s...aa&action=view
Found this for Honda CRV:
https://video.search.yahoo.com/yhs/s...8&action=click
https://video.search.yahoo.com/yhs/s...e6&action=view
found this for Nissan: https://video.search.yahoo.com/yhs/s...42&action=view
I'm going to try the Ford procedure maybe with some modification using the CRV trick of keeping the RPM at 3k if the vehicle won't stay running. Wish me luck!
It would be great if anyone can give me hint how to do this properly for Volvo's.....
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Joined: Feb 2013
Posts: 1,372
Likes: 111
From: Mesa, AZ
One of the problems is that there really isn't a really good, concise Volvo service manual to help look up stuff like this.
When I read the initial post, I couldn't help but think that there's NO WAY that many individual things actually failed simultaneously, and that attempting to repair them individually might end up being a very expensive and frustrating trip to nowhere. The first thing I think about when a bunch o' systems all go belly up at the same time is the power supply. Obviously, a dead alternator / battery will cause a lot of issue, but is usually pretty obvious. There could be an individual power buss that's down on your son's car due to a bad (big!) fuse or fusible link.
Or, alternatively, pin him to the ground and make him admit what dumb thing he did to cause all this chaos (pressure washed the engine compartment, spilled a beer on the ECU, etc.). ;-)
When I read the initial post, I couldn't help but think that there's NO WAY that many individual things actually failed simultaneously, and that attempting to repair them individually might end up being a very expensive and frustrating trip to nowhere. The first thing I think about when a bunch o' systems all go belly up at the same time is the power supply. Obviously, a dead alternator / battery will cause a lot of issue, but is usually pretty obvious. There could be an individual power buss that's down on your son's car due to a bad (big!) fuse or fusible link.
Or, alternatively, pin him to the ground and make him admit what dumb thing he did to cause all this chaos (pressure washed the engine compartment, spilled a beer on the ECU, etc.). ;-)
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Thanks for the input Habbyguy.
I wish my son would wash his car more and cleaning the engine compartment you be a good idea in-fact. He expects the vehicle to magically clean itself.
Anyways, I did the Ford idle relearn procedure and the vehicles runs much better but still has problems. I would say I'm 75% -80% of the way there.
Oh I checked all the engine fuses and they were fine.
Was going to change the throttle body but the wrong one was delivered. Need to reorder.
Oh and I cannot find the dang Crank Shaft Position sensor. I bought a new one but can't locate it on the engine to replace.
I wish my son would wash his car more and cleaning the engine compartment you be a good idea in-fact. He expects the vehicle to magically clean itself.
Anyways, I did the Ford idle relearn procedure and the vehicles runs much better but still has problems. I would say I'm 75% -80% of the way there.
Oh I checked all the engine fuses and they were fine.
Was going to change the throttle body but the wrong one was delivered. Need to reorder.
Oh and I cannot find the dang Crank Shaft Position sensor. I bought a new one but can't locate it on the engine to replace.
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