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 Posted: Thu Oct 03, 2013 5:05 pm |
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Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt
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The problem began today. While driving (with our without the A/C) the car will hesitate at the beginning of each shift specially the 1st and 2nd shifts. The problem was slight but has been increased after I done the service which included: spark plugs replacement, fuel filter replacement, oil filer & oil change, and crank shaft change.
Any idea what this problem could be?
Its annoying me too much and I'm travelling by car after tomorrow, so all advised will be highly appreciated.
Cheers
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Posted: Thu Oct 03, 2013 5:19 pm |
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Joined: Feb 07, 2010
Posts: 2718
Trade Rating: +6
Location: UK
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Why did you change the crankshaft? Or just the pulley?
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Posted: Thu Oct 03, 2013 5:35 pm |
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Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt
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| Steve206 wrote: |
| Why did you change the crankshaft? Or just the pulley? |
It was replaced several months ago with a used one, so I replaced it with a new one.
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Posted: Fri Oct 04, 2013 12:11 pm |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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Which component - complete crankshaft (full engine strip for that), just front pulley or crank position sensor?
I think the biggest probability here is that you have either:-
Dislodged an air intake hose and have an air leak.
Dislodged a wiring connection on a sensor.
Moved an intake air hose causing a split that is slowly getting worse.
Though you may have fitted a new component that is defective - it wouldn't be the first time this has happened. You can test that by one at a time, refit the old components - assuming you still have them.
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Fri Oct 04, 2013 4:23 pm |
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Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt
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I have re checked all possible causes at my friend's garage today. We checked and tried to replace the following components hopefully it gets sorted:
Fuel pump
Fuel Filter
Spark plugs
Ignition coil
Air manifold pressure sensor
Crank sensor
Air filter
Air hoses
Still we can't get it sorted. Could it be the ECU? It is the last thing that we have not checked yet.
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Posted: Tue Oct 08, 2013 6:59 am |
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Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt
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Could this problem be the throttle positioning sensor TPS?
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Posted: Tue Oct 08, 2013 6:32 pm |
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Joined: Oct 08, 2013
Posts: 14
Trade Rating: 0
Location: West Midlands
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I have this problem on my 206. I have a dead spot I think, mainly when I pull away, and it's just about noticeable as I change to 2nd.
Taken it to a mechanics endless times and they can't find a fix for it. Everything shows up as fine.
Saw something when I googled it a while ago, about it possibly being something to do with the carburetor ... something like that anyway. Probably chatting b*****s there though ....
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Posted: Tue Oct 08, 2013 7:54 pm |
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Joined: Jan 29, 2011
Posts: 6526
Trade Rating: +10
Location: Westhoughton, Lancashire
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| Mayhem wrote: |
| Saw something when I googled it a while ago, about it possibly being something to do with the carburetor ... something like that anyway. Probably chatting b*****s there though .... |
The 206 has fuel injection, therefore no carb, so yes, it's b******s.
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Posted: Thu Oct 10, 2013 6:12 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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IF it's an 8 valve engine (TU1 or TU3) it will most likely be valve tappet clearance adjustment.
Has it ever been adjusted? How many miles on the clock?
It also makes sense if you went anywhere near the crankshaft because the timing slightly get's affected with respect to the camshaft and the piston positions.
OR you could have 'pinched' the crankshaft, but that is not very likely in my experience for the symptom you describe.
Valves on the other hand cause exactly this symptom and it's absolutely worth checking them (0.20mm intake / 0.40mm exhaust +/-0.05mm!).
Let us know how you get on.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Fri Oct 11, 2013 6:53 am |
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Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt
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| V9977 wrote: |
IF it's an 8 valve engine (TU1 or TU3) it will most likely be valve tappet clearance adjustment.
Has it ever been adjusted? How many miles on the clock?
It also makes sense if you went anywhere near the crankshaft because the timing slightly get's affected with respect to the camshaft and the piston positions.
OR you could have 'pinched' the crankshaft, but that is not very likely in my experience for the symptom you describe.
Valves on the other hand cause exactly this symptom and it's absolutely worth checking them (0.20mm intake / 0.40mm exhaust +/-0.05mm!).
Let us know how you get on. |
Car dies at the beginning of each shift when pushing the accelerator pedal. The symptom last for few seconds and disappear. The problem only appear at low RPMs.
I don't think that its a vale adjusting issue.
I'm checking the TPS & the ECU! Hopefully it is not the ECU this time!
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Posted: Fri Oct 11, 2013 9:00 am |
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Joined: Feb 07, 2010
Posts: 5120
Trade Rating: +19
Location: Raunds, Northamptonshire
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TPS Sensor / map / even a stepper motor can somtimes cause it. Just had same problem with a 206 i fixed other week.
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Posted: Fri Oct 11, 2013 9:46 am |
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Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt
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| NorthantsBen wrote: |
| TPS Sensor / map / even a stepper motor can somtimes cause it. Just had same problem with a 206 i fixed other week. |
Never thought it can be the stepper motor or IACV as it will cause an erratic in idling which I don't have.
Stepper motors also can cause a cut-out.
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