Lou Lou.

Ok after coming back from Germany car had been feeling a bit flat and developed a miss in 4th gear on boost, after taking the car to the rr day at APT it came clear that the car is over fueling just a tad

Need an idea of what things to check and how please? as Field Motorsport is really busy at the moment and not sure when they can look at my car

Also Jonno checked the resistance of the ECT sensor and want to know how accurate it needs to be? on cold it matched up but when coolant temp was at 80° it was about 100Ω out?

b_kennedy

hope u havent done anything bad. I take it yours is EFI??

Lou Lou.

Yup fiesta's are EFI

So any ideas anyone??

SafeChav

I don't have the figures off the top of my head but i know someone did post up some very good info on the CTS sensor tolerances, but i post on so many threads i dont think i'll ever find that again and i can never get any joy with the search facility

Did Christian not pass any comments on what it could be?

Lou Lou.

Doh! thanks anyway hun maybe someone else knows then

He said could be the map sensor but i could change it and it not do anything so im looking at all possibilities

SafeChav

I did have a search with the google thing and as per usual i couldnt find what i wanted

Sometimes i wonder if theres a simpler way to find old threads, everybody else seems to drag the old ones back up for reference

Can't you borrow a MAP sensor off anyone to try? Theres usually an element of trial and error

Lou Lou.

Yup i have got one to try which i will try but havnt got time to change it till next week

Just after looking on the auto dater cd all the symtoms are pointing at the ECT sensor so was after some info on that if pos

SafeChav

Auto Dater? Lets not stray off onto your personal problems lol

Just found this in the old Haynes

0 degrees - 89-102K ohms
20 degrees - 35-40K ohms
100 degrees - 1.9-2.5K ohms
120 degrees - 1.0-1.4K ohms

Lou Lou.

Cheeky sod

Thanks for that info i got that off the cd but as said when the car is at 80° it was about 100Ω out so i need to know how accurate it needs to be or if i need to replace this sensor aswell

SafeChav

Why am i a cheeky sod you wrote it

Ah i seeeeee.......looking at it from a mathematical side......theres about 84 ohms per degree, so being 100 ohms out to the ECU will only be +/- a degree in tmeperature or so anyway, and being that far up the temperature range i cant see it being a massive issue.

Usually its cold starting issues that arise from the the CTS i believe (although i could be wrong), i'd try that map sensor if you can find time in your busy schedule to undo 3 screws

b_kennedy

I'll refraze that. I meant to say is it still efi?? I did have an idea but that was this morning haha.

SafeChav
you know what im like with ideas haha

Lou Lou.

Cheers Andy will change the map sensor when i can and let you know the outcome

Pmsl @ b_kennedy yes it is still EFI thanks for the thought even if i has gone now

SafeChav

Lou dont get asking him 2 many questions he'll convince you a empty Lambert & Butler packet is the solution

Might be worth checking none of your vacuum hosing has any small splits/minor damage that could make a boost leak aswell

Lou Lou.

Pmsl but i thought that could fix anything!

Ok will have a check over her tonight if i get the chance thanks hun

SafeChav

Well......as i say if your name is b kennedy then that will fix anything

Lou Lou.

Right well i changed the map sensor last night and checked my hoses and all looks good took the car out for a spin and it certainly didnt feel flat! she was spinning up nicely in second lol

Need to find out how to check the fueling now other than taking it to another rolling road

SafeChav

See i bet it didn't take long to undo those 3 screws did it

Buying a wideband lambda setup is about the only other way, it'll soon pay for itself though..........

Lou Lou.

No not really lol

Ok so whats one of those and where would one get something like that?

M K

iTrader: (9)

lou lou ive just bought 1 from christian and it should be turning up tommorow

heres the link for it
http://www.vems.hu/products/round/EN/

Ł275 delivered

very essential bit of kit so decided its time i got 1, more for tommy's us realy but he can tell me what its meant to be doing so i can keep check on it

Lou Lou.

Oh sweet do you think i can borrow it then please

SafeChav

Innovate make very good ones aswell, think you can get one from them for just over the Ł200 mark with an in-car gauge, and tbh its VERY useful to have it installed all the time incase something should go wrong, pays for itself very quickly.

M K

iTrader: (9)

not the sort of set up you can swap from car to car but it is possable i spose if it was wired direct from the battery

SafeChav

Depends really you can buy those exhaust attachments so they can be easily changed from vehicle to vehicle