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Discussion Starter #1
Hi,

I've found stuff around about the 308 VTi Turbocharged model loosing power but we're getting it on my wifes 308 1600 petrol VTi NON turbo.

It's only done 50k, had regular servicing, recent oil and oil/air filters/plugs.
It idles fine, revs freely without load but under load it just has a massive honky induction noise but just no reel power- no juddering or misfire, just gutless.

There are no warning lights up, it's had different petrol including super unleaded, it's got oil, not using coolant, and passed MOT emmissions about 2 months ago.

Any ideas?

Cheers,

John
 

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Ha!, my better half has the same engine 308 with a loss of power issue too although I haven't experienced it losing all power like it apparently does. It would just lose power when driving.

I took off the air filter this morning and sprayed carburettor cleaner into the air intake whilst under 2k revs. Took it for a spin and power seems to have returned and tickover etc. is buttery smooth again now. I'll have to see how it goes.

I changed the plugs last week.

My tickover would occasionally blip so my fault may not be the same.

There are no de-pollution messages or anything either. I have not checked for codes.

Paul
 

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I've recently bought one of these with 63k. I drove 3 and they all have intake roar and compared to.my previous 1.6 astra h they are not as flexible at low revs. How are you finding the fuel consumption as I am a little disappointed compared to the astra. I only got 36mpg on long 300 miles trip where astra always did 42 mpg?
 

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John, your issue maybe fuel filter blockage, I've no idea where that is. I shall be getting some fuel treatment too. This car ran well tonight when I drove to collect the boss. I'll try and update this thread at a later date.

mookev, I agree, not as efficient as the Astra. Average about 33mpg.
 

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That's interesting, the car is quite a lot heavier than 6an astra h. How accurate is your mpg computer? I use trip 2 tank full to tank full a and when I got 36 mpg, trip 2 said 42.2 mpg!
 

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Hi,

Put some carb/intake cleaner through it and it's now very upset.

The engine management warning light has come on with a warning message of 'depollution system faulty'. The rad fan also came on with the car not warm??

Still got sapped power.

Any ideas anyone?

Cheers,

John
Isn't the rad fan controlled via a thermostat directly like most cars or does that go through the ECU on this car?

The warning message will remain for 20 or 30 starts after the fault it detected has cleared. I believe it will then go off.

Have you not got your fuel cleaner yet?

I was recommended to run it down to low fuel, put the treatment in, whizz it down the motorway and then refill with quality fuel.

Have you checked the spark plugs are new?
 

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mookev, 30% motorway driving with the rest mostly suburban.
Hi ya. After your message I checked the air and pollen filters. The air filter didn't look blocked but was discoloured but the pollen ( which I know does I affect fuel consumption) had half a hedge in it and was well old. I fitted bosch air filter and Mann pollen. Just done 340 miles return trip Surrey and it's achieved 43.5 mpg tank to tank with the trip computer saying 44mpg. Much better. Did round trip on under 3/4 of a tank. Interestingly the intake roar mentioned in earlier posts has virtually gone and car more responsive. This on a car with Peugeot main dealer service stamps on time throughout its life.. ive attached old and new photos of both filters air...
pollen ....
 

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Discussion Starter #11
Hi Guys,

The fan kicking in was part of the depollution warning- dunno why but it's linked to that.

After a few runs the depollution warning went as did the engine light, and the fan stopped firing up.

The cataclean helped alot as it was running much better but with a flatspot.

Got a diagnostic tool for £14 off ebay and it had a misfire code on #4 cylinder. Changed the coil on #4, and flat spot has almost totally gone. Plugs are platinums and only 1 year old.

Car isn't 100%, but running a lot sweeter.

Mookev - I don't think the pollen filter will help your MPG but your heater fan will work better now! - They do get dirty pretty quick, I've pulled a really filthy black one out of my Fiat that had definitely only been in 2 years.

Cheers,

John
 

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Hi Guys,

The fan kicking in was part of the depollution warning- dunno why but it's linked to that.

After a few runs the depollution warning went as did the engine light, and the fan stopped firing up.

The cataclean helped alot as it was running much better but with a flatspot.

Got a diagnostic tool for £14 off ebay and it had a misfire code on #4 cylinder. Changed the coil on #4, and flat spot has almost totally gone. Plugs are platinums and only 1 year old.

Car isn't 100%, but running a lot sweeter.

Mookev - I don't think the pollen filter will help your MPG but your heater fan will work better now! - They do get dirty pretty quick, I've pulled a really filthy black one out of my Fiat that had definitely only been in 2 years.

Cheers,

John
Yes last major service was 40k so guess been in a while. Reckon previous owner parked under a tree! Heater is warmer and more efficient!
 

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JohnW69, pleased you have it mostly sorted although it's strange your EML didn't show for the misfire. One of my platinum plugs started playing up and after testing I found the insulation appeared to be breaking down which is why I replaced all four previously, I had the depollution message and EML lit.

This one has been running well since the air intake carb. cleaner flush.

I'll be putting cataclean through it again soon as it's been nearly a year since the last dose.

mookev, nice MPG, I don't ever recall getting that for a full tank.
 
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