Power drop at 4000rpm

2006 Vauxhall Astra 1.8 sport manual
Car: Vauxhall Astra
Year: 2006
Variant: 1.8 sport manual
Categories: Running Rough, Starting & Power Loss
When accelerating the car's "nose" drops and it has no power. This happens at +/- 4000rpm. What could be causing this???
Problem added: Jul 15, 2014 (9 years ago)
Sounds like its in limp mode.

Some sensor is out and the ECU is protecting the engine until its cured.
4k revs seems a little high for limp from the few I have looked at but I could be wrong
Answered Jul 15, 2014 (9 years ago)
Thanks Tony811976,
I've had the vehicle at a dealership and they say it a stretched timing belt..... I'll have to take it to an independent workshop to run diagnostic and rectify the problem.
Answered Jul 16, 2014 (9 years ago)
Ok. If its stretched be careful. I'm sure you know what happens if it breaks.
Maybe it was over tightened on last change, but anyway that would maybe the issue you are having with the can sensor not matching up with the engine speed sensor and making the engine limp
Answered Jul 16, 2014 (9 years ago)

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