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2004 Volvo S80 Hard to start.

Tiny
PANADOL
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  • 2004 VOLVO S80
Engine Performance problem
2004 Volvo S80 Front Wheel Drive Automatic 89967 miles

Yrs 04 volvo s80 2.0T. Hard to start when over night.I already chk the battery is fine, replace fuel pump assy and fuel filter oso. First start no problem. But I turn it off then start again the problem come out. It can crank but have to crank 2-3 time just can start. After start the engine everything is fine. Only when I park d veh over night the problem come back again. Anyone can help?Thanks a lot.
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Wednesday, August 26th, 2009 AT 10:33 PM

6 Replies

Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
Is this the inline 6 turbo engine? Let me know?
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Thursday, August 27th, 2009 AT 12:17 AM
Tiny
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No. Is inline 5 cylinder turbo
engine
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Thursday, August 27th, 2009 AT 10:32 PM
Tiny
JIS001
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Your intermittant hard start can be from a sticking throttle plate. You will need to remove the electronic throttle module to clean it. I strongly suggest you buy the cleaner from Volvo. The reason for this is if you use carb cleaner you can destroy the module and it is very expensive to replace. Also have the pcv system checked.
You need a manometer gage to check this through the oil dipsticktube. Min spec is -0.2kpa any thing higher then the pcv system is plugged up. Usually the skinny plastic vacuum hose on the banjo attached under the intake manifold is what gets plugged up. If it is plugged then you need to remove the intake manifold but you need to remove the banjo bolt under it first or you will break the pcv hose and that can cost a couple hundred dollars to replace. When you remove the banjo clean that out also since that acts like the pcv valve. Attaching a couple of pics for you. The last pic the arrow on the right is the pcv bango you need to remove.


https://www.2carpros.com/forum/automotive_pictures/337695_banjo_1.jpg



https://www.2carpros.com/forum/automotive_pictures/337695_129036467_1.jpg



Good luck and let me know what happens.
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Friday, August 28th, 2009 AT 12:31 AM
Tiny
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Hi.I oso think abt d thottlebody. But I found something wrong wif the cold start sensor and intake air temp sensor.I saw the pic a bit difference wif mine. But I will try to clean the thottlebody and d banjo valve. Any result i'll let u know. Thanks so much for ur help. Keep in touch.
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Friday, August 28th, 2009 AT 10:32 PM
Tiny
JIS001
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O.K. Keep me posted. Also where are you from? I am in the USA so if you are from another country the engines could be different?
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Friday, August 28th, 2009 AT 11:52 PM
Tiny
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Hi,me again...i replace d cold start sensor at this morning already...after that start the engine feel like normal...But i'll let the engine cold down 1st or over night.then conform again...Ohh 4get to tell u i come from singapore and i think engine sure b difference wif ur...English not so good.so....hope u dun mind....


https://www.2carpros.com/forum/automotive_pictures/401260_Engine_1.jpg

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Monday, August 31st, 2009 AT 12:15 AM

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