200 - Chirp/whistle and occasional high idle

[wr6warren]

Just looking for ideas here - thankfully the dealer who did the work have offered to take it back and investigate.

So I’ve just had the timing belt/aux belt + bits done on the car, when I got it back I noticed it was making a slight chirp/squeak when you lift off after mid throttle.

Now, if you have a small mount of throttle on, you can hold it as a continual whistle, if you use less, it stops, if you use more, it stops.

Today there were several occasions where it seemed to hold idle at around 1500rpm.

Seems to generally drive ok.

Dealer seems to know their stuff, and is fairly sure the sound is air rather than belt slip.

Intake fittings checked, throttle body seal checked, aux belt and tensioner checked, pcv blanked off and noise persisted.

Anything else worth checking that would fit these symptoms? Or that would have been disturbed with the new belts?

Thanks in advance!

 

[wr6warren]

Update today - Won't start at all. Just endlessly turns over. Buzzing with my new purchase

 

[LiamP]

Can you plug it into an OBD reader? Anything cheap will likely help you narrow things down, sounds like a vacuum leak but then not starting could be crank sensor or maybe the throttle body (which might be the cause of the chirping noise as well)

 

[wr6warren]

I can try and get a hold of one, I plugged my own cheapy one in and it gave me P0325 - Knock sensor. Not sure how old the code was, this car did have 2+ year old fuel it when I first got it. Its cleared now but sadly it doesnt turn on for me to see if it returns

I have a new crankshaft position sensor incoming tomorrow. Would be handy if that sorts it.

Theres absolutely no hint of even trying to start, just turns over forever. The pump primes when I turn the key, immobilser light goes out as I'd expect. Should I be able to smell fuel out the exhuast if its just not sparking? Or does the crank sensor being bad stop it injecting too?

 

[LiamP]

I can try and get a hold of one, I plugged my own cheapy one in and it gave me P0325 - Knock sensor. Not sure how old the code was, this car did have 2+ year old fuel it when I first got it. Its cleared now but sadly it doesnt turn on for me to see if it returns

I have a new crankshaft position sensor incoming tomorrow. Would be handy if that sorts it.

Theres absolutely no hint of even trying to start, just turns over forever. The pump primes when I turn the key, immobilser light goes out as I'd expect. Should I be able to smell fuel out the exhuast if its just not sparking? Or does the crank sensor being bad stop it injecting too?

Hmm, wouldn't worry too much about the knock sensor as that won't stop a start or cause a noise, no other error codes is concerning, faulty crank sensor would stop injection.