C5 2.2 Td Performance

[clarenceover]

Well it's being quite a few weeks since I went on the forum to discuss my C5's lasklustre performance.

 

My thanks to ronin and daviddad (I think) for their concerned replies.

 

The car has been and had the camblet and tensioners replaced and it had a full diagnostic (so the garage say) all for the princely sum of £377..........not too bad, but I did my Xantia belt and waterpump myself with expert coaching and proper tools for a lot less. Sadly this cheap path is no longer an option. There's nothing wrong with it apparently. The egr valve makes no difference as it is broken at the top end. I've wired bound it to work and it made no difference!

 

The lads at the garage tell me that their plug in gizmo measures throttle position but I have an idea this is where my C5 performance issues lies.

I have an 'expert' at work who suggested I take the slack out of the throttle cable. So I lifted the engine cover and the injector pump was missing (remember my experience is with Xantia's). I've still not located the pump but I have found where the throttle cable joins the engine in what looks like a fly-by-wire (my 29 years in aviation) box of tricks where the cable operates a pully which sends electrical signals to the fuel bit.

 

If you recall, I bought this on the strength of driving 2.0 VTR (TD) C5's at work which have a light throttle and lively performance (yet 2.0 not 2.2 as I thought)

 

I believe, basically, that my performance is all their but it's at the bottom of the pedal where it hits the floor. There is a very great deal of travel for little performance. To be honest, when No4 sons marching band season starts and the long drives begin, I'm going to get a very numb foot because I have to keep a lot of down pressure on the pedal. Simply put, lots of downward pushing produces little performance. As we get near the bottom it does liven somewhat. The possibility of a stretched cable will be looked into. When idling, big throttle movement gives a modest, almost lazy response. It will climb hills better than I first thought because I wasn't putting my foot down far enough. I was terrified of poor mpg! I cannot complain about fuel consumption. Most use is work and back, 50 miles a day outside of rush hour on rural roads and my trip computer reckons 46+ mpg..............I drive gently and with a special 'long travel throttle' I don't have any concerns of fuel use.

 

So there we have it.........................I think the performance is there, but a throttle calibration or maybe new cable might be in order.

 

I think the car is great. No pin numbers or waiting for glow plugs, and it starts in an instant when warm unlike the Xantia this issue of which was getting a bit embarrasing. All the toys work, remote central locking, cruise, climate, a button that turns dash lights off at night etc.etc..

 

The only failure so far is a rear door central locking which is intermittent. (That said, this was what began the demise of my Xantia!)

 

I'm going out to the car now, putting the throttle to the floor, and with the help of an assistant, trying to see how much throttle pulley movement is left.

 

I will report back.

[u4coffee]

Good luck B)

 

One thought. Do you have cruise control? If so, whats the performance like when you use it?