My 850 Is Poorly, Help me please!

[t5tart]

t5tart - Thanks for taking the time out to help.

I think we need a How to made up (which I will do as a thanks for all helping and post in in the how to section)

sounds like a plan
if u need the codes scanning in i can do that

or at least a jpeg image any how

mindu could probably c+p fron that program to a word doc ....not sure

maybe volvospeed already has a thread ??

[siamblue]

T5start you are a star mate, many thanks, needs to be a sticky this how too just incase some else doesn't know what to do,

Gary.

[Andy]

Deffo Sticky... But not this thread, i'll sort a proper (neater) one out soon.

[t5tart]

lol i know how much volvo charge to reset the service light and its so damn simple on these

that would be another good how to if its no there

£40 to plug in a flu lead and press a button lol

[Andy]

Ok Chaps, Now got the codes read.... thanks again to t5tart

1-2-1 is the only code showing

[t5tart]

MAP sensor signal faulty or not present

[Andy]

just found this link which is excellent and will be used as part of the how to.... what you think?

I take it that as the MAF is showing faulty that could be the cause of my erratic / hesitating acceleration?

Excellent work so far

[t5tart]

yer haynes call it a MAP sensor though lol

[Andy]

In fact, instead of re doing a how to that link i've just posted is a how to... doh!!

how come i couldn't find that!!! grrr

[t5tart]

not a clue
but 1-2-1 on the MAP manifold absoloute pressure not MAF ..........

accordint to mr haynes

MAP sensor

instead of MAF sensor the fenix system uses a MAP sensor abd air inle temp sensor
the calculate the volume of air drawn in

MAP sensor is conected to the inlet manifold via a hose and uses a piezo-electrical cryastal to convert manifold pressure to an electrical signal tobe sent to the ecu


does this make sense to anyone lol

[Andy]

not a clue
but 1-2-1 on the MAP manifold absoloute pressure not MAF ..........

maybe something to do with the vac lines ??

What list you looking at to get that code?

[volvotuning]

It's definately relating to MAF on the 850 T5.

Adam.

[t5tart]

haynes manual and the codes in the thread clicky you posted

accordint to mr haynes

MAP sensor

instead of MAF sensor the fenix system uses a MAP sensor abd air inle temp sensor
the calculate the volume of air drawn in

MAP sensor is conected to the inlet manifold via a hose and uses a piezo-electrical cryastal to convert manifold pressure to an electrical signal tobe sent to the ecu


does this make sense to anyone lol

[t5tart]

read on more its the fenix 5.2 system which is used on 10v non turbo engines

[Andy]

Was just gonna say mate... MAP relates to the 10V engine!!!

Stop confusing everyone!!! heheh

[Andy]

It's definately relating to MAF on the 850 T5.

Adam.

Thanks Adam

[t5tart]

Was just gonna say mate... MAP relates to the 10V engine!!!

Stop confusing everyone!!! heheh

hehehehehehe

im confused myself haha its not hard

[LeeT5]

haynes manual and the codes in the thread clicky you posted

accordint to mr haynes

MAP sensor

instead of MAF sensor the fenix system uses a MAP sensor abd air inle temp sensor
the calculate the volume of air drawn in

MAP sensor is conected to the inlet manifold via a hose and uses a piezo-electrical cryastal to convert manifold pressure to an electrical signal tobe sent to the ecu


does this make sense to anyone lol

B4 you go replacing the MAF sensor make sure you check ALL the vacuum line, inc that pig of one between intake manifolds left hand side. You can get to it without removing intake manifold. It's a bitch to get to. It will through a light and cause 1-2-1 code because it's all related. 9 times out of 10 it will always be something that causes something else to throw up the light.. ie vacuum elbows dont have sensors attached to them...know what i mean

I know this cos same code and light last year for me.

[Babybadger]

Ok Chaps, Now got the codes read.... thanks again to t5tart

1-2-1 is the only code showing

http://www.volvoclub.org.uk/850_70_fault_codes.shtml

and for engine bits http://au.geocities.com/ozbrick850/c...odesvolvo.html

Make sure you get ALL the codes that show up. make sure there is no other code after 1-2-1

[t5tart]

B4 you go replacing the MAF sensor make sure you check ALL the vacuum line, inc that pig of one between intake manifolds left hand side. You can get to it without removing intake manifold. It's a bitch to get to. It will through a light and cause 1-2-1 code because it's all related. 9 times out of 10 it will always be something that causes something else to throw up the light.. ie vacuum elbows dont have sensors attached to them...know what i mean

I know this cos same code and light last year for me.

if his engine a 1994 like mint the vac lines wont run to the left og the intake manifild that nipple is blocked off

it runs over the head behind the spark plug cover and to the tree