Air Intake Pipe Advice!!!

[artscot79]

Fuel pump isnt that expensive may be a simple wire issue not unknown for bare wires to be showing and touching the metal of the rear seat a new pumps only £70

[theduke]

Only faulting on roundabouts/corners makes me think earth fault somewhere do you get the same result turning left?

Sent from my GT-S6810P using Ford OC mobile app

[ZetecShearer1987]

Yeah uphill and round bends it's more severe. Left or right

[sonic113]

Yeah uphill and round bends it's more severe. Left or right

I have been thinking but may be off but here goes......

since its up hill (car pull) and around corners (left & right is more severe) the car would be in some form of g force and traction area physically so are you sure it may not be anything to do with he abs/esp kicking in and trying to brake the car which may lower the revs and create engine splutter and hesitation as you try more throttle? this may give the impression its engine or fuel related and would explain why ford cant find any thing on the engine side of things.

example maybe taking a round about too fast or likewise so the system may kick in ect. have you tryed turning esp off and driving for a bit? also make sure brakes are not binding and thing like that.

as i said probable way of but it cant hurt to try as you have looked at many other things.

keep us posted.

:)

[troy45]

One thought that gives ESP niggles sometimes - have you recently changed any tyres on the car?

Front/rear combinations of worn/new tyres of different brands can upset the ESP causing it to trigger on corners where you just wouldn't expect it to. It's due to differences in rolling circumference getting outside the parameters that the ESP considers to be the norm. May also bring on the ESP light as it intervenes but if you're cornering at the time it's very possible the spokes of the steering wheel obscure the light.

If you do have say new tyres on the rear and older ones on the front you could try swapping them round, but bear in mind it's better to have the newer rubber at the rear (opinions do differ on this though)

[ZetecShearer1987]

Just had some new pirellis on the back but it's done this since I've had the car

[Dee_82]

One thought that gives ESP niggles sometimes - have you recently changed any tyres on the car?

Front/rear combinations of worn/new tyres of different brands can upset the ESP causing it to trigger on corners where you just wouldn't expect it to. It's due to differences in rolling circumference getting outside the parameters that the ESP considers to be the norm. May also bring on the ESP light as it intervenes but if you're cornering at the time it's very possible the spokes of the steering wheel obscure the light.

If you do have say new tyres on the rear and older ones on the front you could try swapping them round, but bear in mind it's better to have the newer rubber at the rear (opinions do differ on this though)

that explains a lot! interesting about the good rubber on the rear, makes sense from a cornering perspective, but would it help running in to standing water or would your just lose the front end then?

[Dee_82]

Yeah uphill and round bends it's more severe. Left or right

what about high RPMs around the same corner?

[ZetecShearer1987]

Most of the Rev range. More severe the higher the rpm

[troy45]

that explains a lot! interesting about the good rubber on the rear, makes sense from a cornering perspective, but would it help running in to standing water or would your just lose the front end then?

The advice on this came from a good friend who is a tyre depot manager - was explained that the front of the car could usually be controlled if it lost grip but the rear would behave like a trailer. Probably doesn't apply to every driving situation which can challenge the level of grip you have I'll admit but overall that was what I was advised.

[TomsFocus]

Have you got plenty of fuel?

Not sure if it applies to the Focus but the fuel pickup in my old car would occasionally be starved on sharp corners if there wasn't much in there lol.

[troy45]

Used to get similar with my first ST once the low fuel light was on and you'd accelerate off a roundabout or similar. It seemed to fix itself, which suggests to me that maybe an ECU update actually fixed it as the car had a few of these when it was remapped.

If the OP's car does have ESP and there's a possibility this is causing his problem I assume the car doesn't have an ESP button to turn it off? if that's the case you could maybe try disconnecting the MAF connector and seeing if the car will still drive. The ESP uses MAF readings to calculate torque so if you lose the MAF an ESP fault is thrown up and the ESP disabled. The car will then default to some base values so you're still able to drive it. Obviously it's not going to run brilliantly, and you'll be running without ESP so don't do any mad driving in it but at least if you give it a short drive to mirror conditions which have caused the misfire you'll see if it changes anything.

[ZetecShearer1987]

My car doesn't have a maf sensor instead it uses a map and the pcm to work out the air mixture. My car does have esp so I will turn it off tonight to see if it makes a difference. Hopefully. Only problem is what happens if it does.

[ZetecShearer1987]

And my car does this whatever fuel is in the tank full or low still surges and hesitates

[sonic113]

My car doesn't have a maf sensor instead it uses a map and the pcm to work out the air mixture. My car does have esp so I will turn it off tonight to see if it makes a difference. Hopefully. Only problem is what happens if it does.

try it to see then we can cross that bridge if it turns out it may be this. also it may do well to make sure all your fuses and relays in box fuse boxes are tight and secure and non have worked loose as this may lead to car playing up when in motion or when a g force is hitting it. its along the same lines as a loose wire that was mention only.

I had an old escort that had a loose relay that took a long long time to discover as when stationary it was virtually undetectable but when driving it was slack and causing the light circuit to cut in and out when in motion especially over bumps ect so may be worth a check to make sure all is secure and when at it you should go around all the sensor wiring and connection to check that are non corroded and not slack or damaged. :)

[ZetecShearer1987]

I'm gonna try and check for a vacuum leak as when ford refitted the breather pipe the car felt really good for a short while. What's the best way to do this as I'm gonna use a spray water bottle. Where's best to spray and try to get the car to stumble. Would it really be a fuel pump issue as it always starts first time plus engine roughness is very intermittent. Feels like the engine looses compression when it get the symptoms. As when ford refitted the breather pipe all the power plant smoothness came back.

[TomsFocus]

Soapy water spray is for boost leaks, not vac leaks.

Could use something flammable (easy start/carb cleaner/brake cleaner etc) and the engine will rev up slightly if it sucks any through a vac leak. Careful though, there shouldn't be any sparks around the bay but if there is you might lose your eyebrows. :P

But really you should be able to hear the leak anyway. The EGR vac line broke on my Dads Mondeo V6, and it was a very noticeable whistle! I managed to fix it with tape but only for about 10 miles lol.

[ZetecShearer1987]

Thanks I've got some carb cleaner. Where's best place to spray and safest place where these leaks normally occur

[sonic113]

Thanks I've got some carb cleaner. Where's best place to spray and safest place where these leaks normally occur

I would say along the pipes and especially at the ends where it seals. Maybe best just to do one at a time and go through every pipe just to see if you find anything.

[ZetecShearer1987]

Hi I have still not found any solution to fixing the rough hesitant engine. Been back to ford and no faults are found so can't help me apart from change over 100 quid to check.

Erm I have also the issue now that the car doesn't idle anywhere near the correct level. Most of the time it's hovering around 1000 rpm. I'd I keep pressing the accelerator it eventually drops down to the correct level. This is when the car is warm. Any final ideas as I'm probably gonna get rid of the car as it's been nothing but trouble.