2007 Ford Focus 1.6 - P0106 MAP/barometric pressure circuit range/performance

dodzy

A work colleague got this today en route to work. Tried starting but dead. Jumped and started. Very rough / erratic idle. Any ideas on a most likely cause ?

shietpilot

Needs a new MAP sensor most likely.

Special Circumstances

May just be very low battery voltage put the MAP sensor into a funny state? Guess.

dodzy

Cheers lads, battery appears to be shot. That's the first port of call. Will feedback later.

dodzy

Battery in, fired up immediately. Running extremely rough. White smoke absolutely bellowing out the exhaust. No visible contamination in coolant reservoir or visible oil contamination under the 710 cap / dipstick. Could it be possibly.....

Cat failure ?
Head gasket ?
Terminal ?

Special Circumstances

Pull the connector from the map sensor and see if it runs better? Maybe it has gone bananas altogether?

jimgoose

Special Circumstances wrote: »

Pull the connector from the map sensor and see if it runs better? Maybe it has gone bananas altogether?

Distinct possibility. It'll run a lot better with the MAP disconnected than with the MAP on-line but going radge.

dodzy

But the smoke lads, I mean it's billowing out. No way a MAP sensor malfunction could cause that surely?

Special Circumstances

dodzy wrote: »

But the smoke lads, I mean it's billowing out. No way a MAP sensor malfunction could cause that surely?

Personally the only things I've seen overfuel bad enough to billow smoke were diesel and the smoke was black. But white smoke is possible too, so a ropey signal from MAP could be overfuelling badly?

Petrol or diesel?

Is the waterpump and the alternator on the same belt? You'd surely have a battery warning light if something had gone awol there and the engine was boiling itself?

Could you let us know what the story is once a pro has had a look?

dodzy

Special Circumstances wrote: »

Personally the only things I've seen overfuel bad enough to billow smoke were diesel and the smoke was black. But white smoke is possible too, so a ropey signal from MAP could be overfuelling badly?

Petrol or diesel?

Is the waterpump and the alternator on the same belt? You'd surely have a battery warning light if something had gone awol there and the engine was boiling itself?

Could you let us know what the story is once a pro has had a look?

Under the knife tomorrow with a local Indy. 1.6 petrol. Will feedback.

Waterson

That sounds pretty bad, sounds like the MAP code might be a consequence rather than a cause of a mechanically faulty engine, for example the smoke is a sign of severe engine wear, causing loss of vacuum in engine thus putting the MAP out of range and flagging the code.

dodzy

Waterson wrote: »

That sounds pretty bad, sounds like the MAP code might be a consequence rather than a cause of a mechanically faulty engine, for example the smoke is a sign of severe engine wear, causing loss of vacuum in engine thus putting the MAP out of range and flagging the code.

Yep, I fear the worst for the guy. Not expecting good news; oil must be entering the cylinders hence the high smoke content from the exhaust.

dodzy

Conrod burst the block. Game over.

Any source suggestions for a replacement engine ?


Kilcock have one for €350. Not bad I suppose.