Technical Fuelling off on my 1.0 FIRE?

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Technical Fuelling off on my 1.0 FIRE?

peaman

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Hey guys, was wondering if you can help - I bought a 93 CLX back in August as a cheap runaround. I'm very happy with it, but I was expecting the MPG to be a bit better than it currently is. I haven't done any precise calculations, but I reckon it's getting about 35-38 mpg - I do mostly town driving, but I do sometimes venture onto the motorways, and was expecting more like 50mpg at a steady 60-70mph. Am I being too ambitious?

The reason I think it may be overfuelling is that when cold, the engine seems to flood sometimes if I'm a little too heavy with my right foot - something I didn't expect seeing as it's fuel injected.

Any ideas why this might be? It seems to run fine when it's warmed up, the thermostat seems to be operating correctly, but first thing it coughs a bit and the revs die down if I'm a little lead footed.

Any thoughts?
 
Lead feet + fiat panda = not such good fuel consuption, pretty much the same rules as any car.
Not sure what I get to the gallon, probably about 40-45mpg, depending on which warp factor is in use!
As for the duff running, try an ecu reset - it seems theyre prone to memory loss, which seems to cause duff running on start up from cold.

the instructions can be found in a late model haynes manual, but; off the top of my head:

Loosen the bolt that holds the earth lead to the battery, and leave the bonnet open.

Start the engine, keep it running untill the fan cuts in.

Let the fan go off.

Let the fan come back on again, then quickly turn off the ignition, and dissconnect the earth lead on the battery.

Leave off for approx. 45 seconds!

Re attatch the earth lead, and start the engine let it run for atleast two minutes.

In the manual it says the car may run oddly for a few miles untill it re-learns the optimum settings

Hope this is of some use........................................
 
sounds a bit low for out of town stuff, I usually get low to mid 40s, and that's with a carb. first thing is to make sure it's serviced up to date, air filter can make quite a difference if it's clogged up,then if you can crack 45 on a long run, stop worrying(y)
 
Thanks for the advice guys - I didn't know the ECU was self learning on these cars. I've performed ECU resets on other stuff, but erm, how to put it without offending anyone - their engine management systems were a little more modern? lol.

I'll give the ECU a reset once I've got a Haynes manual, which I should be getting in the next few days. I've not had a chance to service it properly yet, what with the cacky weather, but I'm planning on changing the plugs, oil, air filter, gearbox oil and coolant asap. The most I've done so far is check the air filter, which was pretty clean to be fair.

Just to clarify - when I said "he engine seems to flood sometimes if I'm a little too heavy with my right foot", I don't mean giving it a large bootful or WOT or anything daft like that, that would be pretty bad from stone cold! I just meant if I give it say, more than 50% throttle, it splutters and really doesn't like it, sounds for all the world like it's overfuelling. I know my way around an engine and I can tell the difference, it certainly doesn't sound ignition related.

Cheers chaps!
 
All i can say is give it a service, and try a reset - mine was always a poo when he started from cold, like it was overfueling/flooding but that seemed to cure it - good luck(y)
 
Start the engine, keep it running untill the fan cuts in.

Let the fan go off.

Let the fan come back on again, then quickly turn off the ignition, and dissconnect the earth lead on the battery.

Leave off for approx. 45 seconds!

Re attatch the earth lead, and start the engine let it run for atleast two minutes.

In the manual it says the car may run oddly for a few miles untill it re-learns the optimum settings

Hope this is of some use........................................

I always thought that we should:
- when engine is cold turn ignition on
- disconnect baterry for 1min
- turn ignition off
- reconnect baterry
- start engine without acceleration pedal
- let it warn up till fan goes off
- stop engine
- start again and go....

And I never know if it for Bosch systems or for Magnetti...??:confused:
 
Depends on which you have, I was just going on what it recomends in the haynes manual.:confused:
I my haynes there only Bosch injection not Magnetti...I'm still not sure which one is better and right....
 
sounds a bit low for out of town stuff, I usually get low to mid 40s, and that's with a carb. first thing is to make sure it's serviced up to date, air filter can make quite a difference if it's clogged up,then if you can crack 45 on a long run, stop worrying(y)

45mpg :eek: I haven't topped 37 and that was once in the last 1800 miles. Mine is regularly in the 30-35mpg range (n).

In my 6 months of ownership I have changed the oil (you may remember the sump plug saga) air filter, fuel filter, plugs, leads and dizzy cap. None of this seems to have made any difference. Maybe its just my driving style :rolleyes:.

One thing I did wonder is whether the carb is worn and/or needs setting up properly. Has any one had any experience of this, or make any recommendations?
I'd be happy if I could return c.40mpg.

Cheers, Tom.
 
45mpg :eek: I haven't topped 37 and that was once in the last 1800 miles. Mine is regularly in the 30-35mpg range (n).

In my 6 months of ownership I have changed the oil (you may remember the sump plug saga) air filter, fuel filter, plugs, leads and dizzy cap. None of this seems to have made any difference. Maybe its just my driving style :rolleyes:.

One thing I did wonder is whether the carb is worn and/or needs setting up properly. Has any one had any experience of this, or make any recommendations?
I'd be happy if I could return c.40mpg.

Cheers, Tom.
oh OK, must just be my driving, I've had that out of both pandas, the Y10 was slightly better, and the Uno was about the same. I'm gutted if it drops into the 30s.
My carb is now set using the 'random twiddling with the mixture until it drives OK' system on the run back from Gaydon and it feels alright now although I suspect it will need some drastic thinning down come MOT time. The only time I had problems in that area was a sticking choke cable - worth a look:)
 
Sounds right. I average 34-38MPG around town and dual carrageway, and 50MPG at 55MPH (drifting between 50-60).

60-70 is far to fast to expect a decent MPG return! I've have returned 57MPG before!

Jon.

OK, so what you are saying is that booting it down the A45 at 75-80 is bad :eek: I make a lot of short around town journeys. So I guess I'll have to live with that.
At least it is more MPG than I'd get out of the other vehicles I have (y)
 
OK, so what you are saying is that booting it down the A45 at 75-80 is bad :eek: I make a lot of short around town journeys. So I guess I'll have to live with that.
At least it is more MPG than I'd get out of the other vehicles I have (y)

No, that speed isn't bad, just a little more costly :p

I find that bombing at 80-85 (on the private land at college :rolleyes:) returns the same MPG as running around town :p (y)

I think my best is 38, and that was the 200 odd mile round trip to gaydon. i think i could have done better had i not needed the heater on so much! worst is 27, but i had a fuel leak so i'm blaming that

Worst I've had is 33MPG on the Selecta, and lets say, that journey included brake fade :eek: :rolleyes:

And 33MPG on the Sisley with the fuel leak (now only fill up to half), must sort out that blooming filler neck :bang:
 
Worst I've had is 33MPG on the Selecta

My last 'record' is 25mpg...only town, lots of trafics,cold engine, max 3miles each way (job and back)....big different thanin summer :(

Good sparks, ignition cables, oil, lambda (maybe not good-not original, last week I fit spare one and I'll see), brakes not blocked, light right foot....just don't know :(
 
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