1.9 Gti Running Very Rich, Low Mpg

[Anthony 1,003]

Coolant should be half way ish up the expansion tank.

 

And yes, that lambda is very broken and will no doubt be screwing fuel economy. It should be connected to the main engine management loom somewhere in the vicinity of the battery - from memory it's two 2-pin JPT (injector style) plugs on the 205 Motronic cars.

[Bobbafett 49 2 Cars]

Excellent. Maybe i've found the culprit finally. Possibly the engine management light too?

 

There are some crimps about 20cm from the sensor, maybe someone has changed it before. But I see you can buy 2 versions, 1 with crimps and 1 with 2 2-pin connectors. See if I can get hold of one tomorrow and fit it.

 

Thanks!

[MikeC 10]

Try and get a genuine one with the right connector. Crimps would not help the situation either. Btw you can't solder them either.

[Bobbafett 49 2 Cars]

I got a genuine one with 2 connectors, black and blue. The connectors are only ~30cm from the sensor itself though, and cannot see any plugs for it to go into?

[DamirGTI 342]

The wiring for the lambda sensor is routed down the left chassis leg and connects the sensor just about in the middle where the chassis leg ends/meets the floor pan ... jack it up and you'll see the connection from underneath , if someone didn't chop them off should be there .

 

D

[Bobbafett 49 2 Cars]

Nice one, will try and fit it at the weekend. Also got a new fuel filter.

 

There is now a rubbing noise coming from the cambelt area. Guess it's the belt rubbing on the cover? It's booked in the garage for a belt change on Wednesday so am not driving it until then now this rubbing has started.

[farmer 328 1 Cars]

The covers warp over the years and foul the belt.

 

Tom remakes a bottom cover in stainless.

[DamirGTI 342]

If it's metallic kinda sound , could be worn timing belt tensioner also .. definitely be careful and best not drive it until you find what's wrong/replace the belt . For proper service best to replace the lot - timing belt , tensioner and water pump .

 

D

[Bobbafett 49 2 Cars]

If it's metallic kinda sound , could be worn timing belt tensioner also .. definitely be careful and best not drive it until you find what's wrong/replace the belt . For proper service best to replace the lot - timing belt , tensioner and water pump .

 

D

Yeah the next time it is being driven is to the garage on Wednesday morning. Not taking any chances.

 

Sounds like a belt rubbing on something to me. If I push the top cam cover away from the head it stops.

Edited January 10, 2014 by Bobbafett

[welshpug 1,661]

so it's the top belt cover that's causing it then, pretty common as it happens, often a fiddle to get it to stop rubbing but it's never on the belt itself.

[Bobbafett 49 2 Cars]

Just had 20 mins so went out and took the top cover off. Noise stopped. Noticed the top cover was warped in on one side a little bit so heated it gently with my blowtorch and bent it out. Back on and noise stopped. Results!

 

Changing the lambda and fuel filter tomorrow and then Wednesday she's in the garage for new cambelt, tensioner and water pump. Glad i'm not doing it, it looks bloody tight in there. Then week after the bonnet and roof are being sprayed to get her looking in top form!

[dcc 855]

Cambelt is easy on these engines!

[Bobbafett 49 2 Cars]

I've wanted an actual mechanic to look the thing over anyway so getting a garage I know to do the cambelt etc allows me to get them to check other stuff at the same time. There is also an oil leak coming from the distributor seal so they're going to do that as well, as well as check the mixture etc.

[chipstick 382 1 Cars]

Where in Somerset are you?

[Bobbafett 49 2 Cars]

Weston-super-Mare.

[chipstick 382 1 Cars]

I see you've already booked it in, but for future reference an honest place I'd recommend is Worle Autos

[Bobbafett 49 2 Cars]

Yeah I know Worle autos. I take my van to a place called Formula 1st who have always been good for me but i'm being a bit more careful with the Pug because it's old and I worry about it haha. Taking it to a garage I know who are very very good but on the pricey side. But, only the best!