Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > S40 / V40 '96-'04 General
Register Members CarsBlogs Help Calendar Mark Forums Read

Notices

S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004.

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

2004 V40 1.9D Gradual loss of power & smoking

Views : 133

Replies : 8

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Apr 14th, 2019, 19:00   #1
Dirty Diesel
Junior Member
 

Last Online: Apr 20th, 2019 17:01
Join Date: Jan 2018
Location: Lancashire
Question 2004 V40 1.9D Gradual loss of power & smoking

Good evening

I haven't posted here in a while, but as my V40 has decided to through out another problem, my return is eminent.

The matter at hand, is this: my V40 has slowly been losing power, not gutless, but noticeable, and is smoking what seems to be black smoke, with possibly a hint of blue from what I can tell.

Over the course of my ownership, I have replaced/repaired the following:

Cleaned EGR valve

Replaced MAF sensor

Replaced N75 Valve (Vacuum Control Solenoid)

Replaced Turbocharger

I've checked over the vacuum system, and all seems to be in order. Along with losing power, it doesn't seem to idle right either, it jumps around, usually dropping by up to 50RPM, it doesn't sound much, but I know somethings wrong, as it always idles spot on.

I've spoken with the user named Gatos about the matter, and all we could come up with was the injectors. Two of the injectors do seem to "click" more than the other two, when holding a screwdriver to either the top, or the metal base of, the injector, then listening to them through the screwdriver.

I must also mention that I do not have ready access to a diagnostic machine, but have used one recently, and no engine related codes were available, indicating nothing completely gone yet, or any electrical problems. Engine Management Light is also NOT present.

Could anyone shed any light on the matter? It's getting rather annoying, and I'm starting the wonder whether it'll pass it's MOT tomorrow.

Any help is greatly appreciated! Thanks I'm advance

Last edited by Dirty Diesel; Apr 14th, 2019 at 19:38.
Dirty Diesel is offline   Reply With Quote
Old Apr 14th, 2019, 19:54   #2
dieselderv
Senior Member
 

Last Online: Yesterday 15:01
Join Date: Apr 2016
Location: Derby
Default Problem

Unsure about v40 but on my many Saab 9-5s black smoke and poor performance were amongst other things down to a bellied out intercooler
dieselderv is offline   Reply With Quote
Old Apr 14th, 2019, 19:56   #3
Dirty Diesel
Junior Member
 

Last Online: Apr 20th, 2019 17:01
Join Date: Jan 2018
Location: Lancashire
Default

Quote:
Originally Posted by dieselderv View Post
Unsure about v40 but on my many Saab 9-5s black smoke and poor performance were amongst other things down to a bellied out intercooler
Funnily enough, I did have an issue with the top intercooler hose coming off a couple of times, but once tightened back down it hasn't been a problem.

I don't think it's there intercooler, as I'm still getting reasonable performance, but thanks for the reply! I'll double check to be sure, but I think it's okay
Dirty Diesel is offline   Reply With Quote
Old Apr 14th, 2019, 21:21   #4
AndyV7o
Master Member
 

Last Online: Yesterday 22:32
Join Date: Jun 2018
Location: Creswell
Default

Symptoms would suggest excess fuel or insufficient air, given the work that has been done. Lack of power would suggest lack of air more.
Have you tried removing inlet pipe to maf to see if it helps?
There could be a liss of boost somewhere.
Also have you rechecked egr to ensure it isnt sticking open etc?
Did you clean out the inlet manifold when egr done?
AndyV7o is offline   Reply With Quote
Old Apr 14th, 2019, 21:32   #5
clarkey1984
Premier Member
 
clarkey1984's Avatar
 

Last Online: Apr 20th, 2019 20:23
Join Date: Jul 2014
Location: Beccles
Default

Im unsure if diesels work the same, but when my t4 was being diagnosed a boost hose was removed to check something, and this gave a rough idle and lots of black smoke, as the fuel air ratio the engine is trying to maintain with the boost hose not connected is thrown way out of whack, it still sticks in the right amount of fuel but isn't receiving the amount air its expecting, so its conceivable that a boost leak would produce similar symptoms but on a lesser scale maybe?
__________________
Silver 2002 V40 T4 Sport Lux, "Sergeant Silver"

17 inch Mitsubishi Galant wheels, K&N 57i induction kit, Stainless single box exhaust system,
Ultra clear side repeaters, silvatek indicator bulbs, pioneer cd/aux/usb stereo.
clarkey1984 is offline   Reply With Quote
Old Apr 14th, 2019, 21:40   #6
AndyV7o
Master Member
 

Last Online: Yesterday 22:32
Join Date: Jun 2018
Location: Creswell
Default

Quote:
Originally Posted by clarkey1984 View Post
Im unsure if diesels work the same, but when my t4 was being diagnosed a boost hose was removed to check something, and this gave a rough idle and lots of black smoke, as the fuel air ratio the engine is trying to maintain with the boost hose not connected is thrown way out of whack, it still sticks in the right amount of fuel but isn't receiving the amount air its expecting, so its conceivable that a boost leak would produce similar symptoms but on a lesser scale maybe?
Yep. Worse for diesel as they work with full air all the time, only the fuel is adjusted. So, as you say, lack of air would produce smoke and power loss. Overfuelling on a diesel is more likely to just make it go like stink.
AndyV7o is offline   Reply With Quote
Old Apr 15th, 2019, 21:32   #7
aldred309uk
Member
 
aldred309uk's Avatar
 

Last Online: Yesterday 14:14
Join Date: Sep 2015
Location: Blackburn
Default

I would be inspecting the intercooler pipe work and consider a strong dish soap mix in a squirty bottle and have someone gently revving the engine to get a little bit of boost into the system and start liberally spraying it looking for any bubbles. In my case when I did this I had a split in the under side of my pipe, first one off the turbo behind the engine at the bottom. I could see the liquid being blown by all of the leaking air. Hope this helps!
__________________
Phase 2 1.9tdi V40
aldred309uk is offline   Reply With Quote
The Following User Says Thank You to aldred309uk For This Useful Post:
Old Apr 16th, 2019, 10:57   #8
Dirty Diesel
Junior Member
 

Last Online: Apr 20th, 2019 17:01
Join Date: Jan 2018
Location: Lancashire
Default

Quote:
Originally Posted by aldred309uk View Post
I would be inspecting the intercooler pipe work and consider a strong dish soap mix in a squirty bottle and have someone gently revving the engine to get a little bit of boost into the system and start liberally spraying it looking for any bubbles. In my case when I did this I had a split in the under side of my pipe, first one off the turbo behind the engine at the bottom. I could see the liquid being blown by all of the leaking air. Hope this helps!
That's a brilliant idea. I'm going to try that. I'm just hoping it's not the intercooler, as it's wedged between the radiator and the A/C condenser
Dirty Diesel is offline   Reply With Quote
Old Apr 20th, 2019, 20:05   #9
bobthecabbage
Premier Member
 

Last Online: Apr 20th, 2019 20:25
Join Date: Mar 2014
Location: Plymouth
Default

I'm going to vote for the MAF sensor or the EGR valve.

Although I do wonder about an rpm sensor issue with the unstable idle.

Funnily enough I encountered a similar set of symptoms on a different vehicle today. I will let you know if I find the cause.
__________________
'04 V40 1.9D
bobthecabbage is offline   Reply With Quote
Reply

Tags
1.9d, diesel, injector, injectors, smoke


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 01:02.


Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.