Diagnostic on B18E???

[anti-pode]

Hi there, could anybody help. Is there a diagnostic fault code reader on the B18E engine anywhere...
Im having a few idle problems and I have tried changing a lot of the usual problem parts..

Im thinkin it might have something to do with a strange sucking noise that I can sometimes hear when the engine is running hard. Its coming from behind the facia somewhere. Very confused????

If anyone could give me any ADvice that would be great.

Cheers

[kane]

Tried the idle control valve?

Is there a permanent problem when hot and cold?

B18E owner myself and i must say they have poor idle.

[bigdickbuster]

It' s very hard to connect B18E engine to the diagnostic unit. Basically it's impossible without special stuff. I think that the oldest mechanic in your local Volvo workshop don't remember about this solution.

Tell us about your problem, we will try to help you

[anti-pode]

Thanks for the replies chaps... I've had idle problems since i bought the car. Had more trouble than i thought trying to identify the problem..

Had a bit of a tinker round under the bonnet and found air hose to the idle control valve had been blocked up with a chunk of metal by the PO. So it looks like they have tried to stop the Idle Valve affecting the idle. Have tested the Idle Valve though and it seems to be working fine...

I have...
adjusted throttle switch
adjusted CO content meter
Checked all sensors ohm readings all seem fine

Im gonna check for possible air leaks next and will post what i find on here, but in the mean time heres the trouble i been getting....

When cold the engine will cut out if i dont keep revs up

When warmed up the engine will idle at either 1600rpm, or idle at around 800rpm but then slowly increase up to 1600rpm. Also while idleing if any load is put on the engine, for example steering, then the revs drop. This says to me that the idle control aint working but like i said before i tested the valve and it was fine.

ANy advice and help is greatly appreciated. Thanks. Neil

[kane]

sounds very silly but a few simple things to take into consideration, if idle valve appears to be working make sure its well clean, i.e use wd40 and earbuds to make sure its free i think it spins on a bearing so make sure its well coated also make sure no cotton bud drops in it, second check hose from map sensor to intake manifold, (perishes over time) check ignition system, so ht's, dizzy, rotor arm and mostly plugs i have about 5 sets of plugs untill i found the right ones, ignition causes most problems, also running from cold bad can mean faulty engine temp sensor be sure to test ohms on sensors from hot and cold for comparison, i have bad running from cold with mine causing major bkfire but when warm nothing touches it..... hope that helps!!!!

[LIP]

Hi
i had this problem & it was a wire disconnected from the temp sensor, also have you checked your tps is set properly, (throttle position sensor) & make sure
your gas recirculation pipes aren't blocked with gunk & the manfold to map sensor hose is secure with no splits.
Check you're getting proper flow from the fuel pressure regulator, both sides in & out & it's manifold vacuum hose isn't split, there's a fuel filter mounted near the fuel tank that can be blocked if it's old. Have you checked the jets to make sure there's no loose wires & finally ...battery terminals & earth leads & straps, the ecu needs a good steady current to out put a constant 5v signal to the sensors & they can play up if they're not getting a good current. I presume your dizzy cover & rotor arm are in good nick & throttle body to plenum gasket is ok.
best of luck
lip

[anti-pode]

Hi all, been a while i aint had the time to work on my car...

Got the week off work and been trying to fix the idle problems ive been having..

Reset the TPS position and the position of the throttle itself and also the butterfly throttle valve. This seems to have sorted it.
Ive also replaced distributer cap and rotor arm and put some new spark plugs in... Made things a lot smoother.. woo hoo!

Cheers for the tips guys

[5781848]

It' s very hard to connect B18E engine to the diagnostic unit. Basically it's impossible without special stuff. I think that the oldest mechanic in your local Volvo workshop don't remember about this solution.

Tell us about your problem, we will try to help you

Anybody know how connect B18E with Fenix 3A to PC?
There is no diagnostic socket in right place...