fiestaturbo.com

[slaney21]

hi all

i have just recently acquired another fiesta Got it through the mot etc but there seems to be a lot of judder in the 30-50mph range. Its not excessive but its a right pain in the arse in slow moving traffic. Im going to get a plug and filter change as soon as possible but could anyone suggest anything else? There is an exhaust on there which im unsure of what make it is but the chap at the mot station said it could be a possible cause as its popping quite a lot here and there?

the car is a mk3 fiesta xr2i 16v

cheers

[Chrism_frst]

All 3 cars i've had and ran on OFAB have been exactly the same. Any time i'm really light on the throttle it chuggs away. I've never solved it neither. If you fix it, let me know please

[slaney21]

Ok will update when i find out any answers. Out of interest what did you replace to see if it solved it in the meantime?

anyone else with any ideas?

cheers

[slaney21]

BTTT

really need help with this soonish

won't be back for 2 days so will check then

[slaney21]

shameless bump.


Drives fine after leaving it to idle provided i drive it for more then 5/10 mins down the road. Anyone with any assistance?

[Simon84uk]

Few things to try...

- Clean the MAF sensor by spraying with some carb cleaner, be careful as the element is VERY fragile.
- Go around cleaning earth points for the engine loom and put some Vaseline on them.
- Might also be worth resetting the ECU in case is in some limp mode.
- Check the balancing weight is still on the O/S drive shaft and isn't loose, depends what kind of judder you meant.

Few other points worth mentioning...
- Can't remember if the 16v has Lambda sensor... but this is another possibility. Leave 'til later though as not cheap.
- Might be worth checking the cam-timing just to make sure it isn't 1 tooth out. Unlikely as would run pretty bad all the time.

Have you done your plugs and leads yet?
Is the oil really black and thick?
Any visible smoke / excessive steam?
Does the crankcase breather kick out massive amounts of air or even blocked? (Thinking of piston rings)
Has it got a CAT? (potential blockage if shattered)

Should be enough to get you started looking at it.


Simon

[slaney21]

thanks for the list mate much appreciated.

Il print that out and see what my mate can do to help as he is a mechanic

i know for certain there is no smoke etc and the oil is the right colour. I just find it odd that if i pull over after 5 mins driving at over 60mph it will correct itself if i let it idle for around 40seconds. Have to do this every morning on the a303 in the layby before carrying on to work Should have a tps and iscv coming so will change them with plugs and leads when i get some also

[mrorange2]

Is the juddering when your on the throttle or is it on lift off etc?

[slaney21]

judders when accelerating slightly but mainly no power for a few seconds. Judders mainly on lift off bud

[mrorange2]

My RS1800 does this its fine on acceleration but on lift off the car judders (Like the engine is moving etc) i have replaced alsorts of mounts etc etc and i have got it down to the gearbox bearings. If your having the problem on lift off might want to check some mounts like the gearbox mounts and upper rear engine mount?

[slaney21]

not much of an update but im getting the gearbox and clutch + cable replaced next month thanks to shaun

im hoping this will solve the judder and even the clutch which seems to not respond at times

fingers crossed

[slaney21]

Ok more of an update

had the ratchet thing replaced on the clutch peddle so doesn't slip now which is a bonus. I have changed the MAF over from a 1.6 and all im getting now is the car stalling at junctions. I have unplugged the tps in the meantime as its helped a little with the stalling but still no joy. Hoping to be in a garage next week with a replacement inlet/tb/tps/iscv all from a 1.6 and battery so hope that cures it

[sjoyce666]

Ok more of an update

had the ratchet thing replaced on the clutch peddle so doesn't slip now which is a bonus. I have changed the MAF over from a 1.6 and all im getting now is the car stalling at junctions. I have unplugged the tps in the meantime as its helped a little with the stalling but still no joy. Hoping to be in a garage next week with a replacement inlet/tb/tps/iscv all from a 1.6 and battery so hope that cures it

You need the proper 1.8 XR2i parts not the 1.6, they wont be doing it any favours to start with

The MAF will have all the wrong readings for the ECU, the TPS and ISCV shouldnt make a difference if they are from a 1.6 or a 1.8 Zetec. The MAF definately will need to be from a 1.8 XR2i

Scott

[slaney21]

Pm'd you mate