Corsa c problems

[bazzap8389]

I'm posting this for a friend as he isn't on any car forums hopefully someone can help.

He has a corsa c 1.4 Sri and the car doesn't rev past 5k rpm, it's as though it's bouncing off the limiter also it takes longer to start then usual.

He was told to change the coil pack and plugs which he has done and it's still the same.

Any ideas? Cheers

[mowgli]

get it plugged in somewhere for a diagnostic check, it sounds like a sensor is out, either that, or the cambelt has slipped

[bazzap8389]

Thanks for the reply il let him know

[Will F]

get it plugged in somewhere for a diagnostic check, it sounds like a sensor is out, either that, or the cambelt has slipped

Cambelt?? If that had slipped, it would run like a bag of nails and would probably still rev to the limiter! It's in limp mode so it's an electrical fault. You can flas the fault codes by holding the clutch and brake on and switch the ignition or something... Get that down if you can't afford the diag machine

[phazer]

Crank sensor fault will give this symptom. Check the wiring and the plug condition first before replacing.

[staggy_gsi]

Mowgli could still be right, if its only jumped a tooth or two it could have the same symptoms as a knackered crank sensor. Not as likely as the sensor itself being at fault, but not a stupid suggestion by any means...

[meritlover]

most often on the 16v engines, the sintered crank pulley slips on the woodruf key by a few degrees causing the sync sensor on the cam not to line up with what the ecu expects to see on the crank. everything appears normal from the outside. even the markings on all 3 pullies line up until you remove the bolt and see that its chewed.

check and recheck all the usual.stuff first though, before jumping to any rash conclusions.

happy Saturday

[Will F]

Never heard that on the later lumps. If that were the case, I would have thought that as soon as the woodruff key has been breached, it's game over quite quickly...?

[bazzap8389]

Thanks for the help, the car is booked in for after new year so I'll let you's know what the problem is

[meritlover]

Never heard that on the later lumps. If that were the case, I would have thought that as soon as the woodruff key has been breached, it's game over quite quickly...?

No. everything retards by a few degrees so valves are lucky. but its close. problem starts as poor performance which degrades over time until symptoms similar to the above occur.

if the timing was advanced by the same amount it would likely be a different story however.