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Post by EspadaIII on Aug 22, 2023 17:57:22 GMT
My son's Renault Captur has developed a strange warning note on the dash. 'Anti-Pollution problem - refer to dealer'.
I thought this was odd given that the car has had a recent few decent runs and was running tolerably well if not overly sparking. However it is only a turbocharged 0.9l triple and only gets going above 3,000rpm and have never set speed records. After driving all the other cars in the family, this car feels very slugging at low revs, but then the others have larger engines, are more powerful or simply provide torque lower down the rev range. The I5 of course is a different kettle of fish..
Anyway I took it in to my local indy who I have used for years and the put it on the scanner. The only major error was a flywheel reading error. A bit of googling indicated this may well be a cam position sensor and therefore nothing to do with anti-pollution stuff at all.
Car is in for a more in depth investigtion although I have told them to order the sensor anyway. Let's see if that is the answer.
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Rob
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Post by Rob on Aug 22, 2023 18:13:23 GMT
If it was a diesel then we'd all think DPF or Ad-Blu problem. But it's a problem. Sounds like it's ignition related and you say it takes to 3000rpm to really get going. Even though only 0.9l I'd expect the turbo to be making a difference before then to increase torque.
How long has it been sluggish? I only ask because ours sons drive cars and put up with all sorts without thinking there's something wrong. And the eldest thinks an oil warning light is for low oil but of course it's low oil pressure, probably because the oil level is low.
Although a larger capacity engine, the PSA 1.2l 3-cylinder turbo goes really well especially in smaller cars like a 208.
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Post by Humph on Aug 22, 2023 18:16:27 GMT
As a Renault, it really should just sort of shrug when interrogated by the code reader you’d think. 😉
If it is the cam sensor, that should be a quick, easy and inexpensive fix though.
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Rob
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Post by Rob on Aug 22, 2023 18:32:55 GMT
This is where a simple OBDII reader comes in handy at home with an app on the phone.
The Tiguan of my step-son I'd borrowed from last year showed an error back in Apr/May but it was driving fine. Trouble was I was in South Wales and didn't have it. Got home fine and even got excellent MPG. It suggested a problem with DPF so I reset the error to see... it didn't come back. Probably the blast back home cleared it anyway.
You can get better software and I'm not sure if you need better (so more expensive OBDII readers/writers). Some you can use software wise to change settings on a car. Mine does nothing like that.
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Post by EspadaIII on Aug 24, 2023 13:23:18 GMT
Well. I'm waiting for news. Yes Renaults do sort of shrug if things go wrong but to be fair, other than a replacement water pump the car has been fine although it does feel fragile.
I think I may change it once it comes back for something more robust or Asian.
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Post by EspadaIII on Aug 27, 2023 19:49:17 GMT
Looks like it needs a flywheel. Cam position sensor hasn't cured the error message and other minor irritants, such as being overly sluggish when cold indicate that there is a deeper problem. Ugh.
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Post by Humph on Aug 28, 2023 8:34:39 GMT
Oh dear, sounds a bit expensive. If the flywheel is being replaced it might be prudent to do the clutch at the same time.
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Post by EspadaIII on Aug 28, 2023 9:40:43 GMT
Oh yes, the garage was adamant that there was no way they would replace the flywheel without replacing the clutch simultaneously. As it is single masss flywheel and the gearbox is coming out anyway the cost will be not much more than replacing a clutch (I hope).
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WDB
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Post by WDB on Aug 28, 2023 12:01:05 GMT
Makes me wonder what there is in a single-mass flywheel to go wrong. Perhaps if I had a mechanical engineer to consult…
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Post by EspadaIII on Aug 28, 2023 13:41:36 GMT
I know but the garage mentioned something like a tooth being chipped.
If it is a dentist may be cheaper!
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WDB
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Posts: 7,425
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Post by WDB on Aug 28, 2023 16:55:41 GMT
Hard to imagine a dentist being cheaper than anything!
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bpg
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Post by bpg on Aug 31, 2023 9:50:28 GMT
Anti pollution warnings usually relate to CO2 sensors or cat issues.
Flywheel is what the starter spins to start the engine and then balances out vibration/provides mass to keep the engine running at idle.
Not sure how the flywheel is going to fix pollution.
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Post by EspadaIII on Aug 31, 2023 9:58:18 GMT
Apparently it has been fixed without replacing the flywheel. Waiting to get home to find out the details.
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Post by EspadaIII on Sept 1, 2023 12:07:47 GMT
Got home late last night and this morning spoke to my son about the car who told me it had been transformed. So I drove it this morning as well and indeed it is back to the performance it exhibited when the car was new and not like it has been driving for the last few months.
Turns out that the camshaft position sensor was faulty and replacing it did not fix the problem as it then needs to be recalibrated with the engine and software. Having done that it now feels that the car is no longer strangled and there is a significant increased amount of torque at all engine speeds. Clearly this sensor has been going wrong for several months.
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bpg
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Post by bpg on Sept 1, 2023 13:05:00 GMT
Happy days, such a relief when the parts fitted work.
My pet hate is garages throwing parts at a car hoping it's a fix at customers expense.
You just know it'll be the clutch next week 🤣🤣🤣
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