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| see if anyone can answer this strange running issue!!! https://www.fiesta-si.com/forums/viewtopic.php?f=4&t=12676 |
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| Author: | sk8xtrm [ Tue Sep 02, 2008 5:26 pm ] |
| Post subject: | see if anyone can answer this strange running issue!!! |
Right this has baffled me, my 2ltr fez runs so smooth warm or hot with no problems at all, however she performs slightly better when the engine is cold  i have no idea why tho...ive tried loads. no problems really when you think about it but im getting more performance when cold and that's bad i don't want to put excessive wear on my engine. cheers! 
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| Author: | cs detailing [ Tue Sep 02, 2008 5:32 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
cold air is denser, ecu compensates by adding more fuel. more fuel and air = bigger bang and better combustion = more power easy |
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| Author: | onslack [ Tue Sep 02, 2008 5:46 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
you tried replacing the temp sensor on top of your thermostat? |
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| Author: | james_rs [ Tue Sep 02, 2008 6:41 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
I had the same issue. Put a thermostat in that opens at a cooler temp. Should help a bit. (btw i dont know what thermostat too use lol) |
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| Author: | woodsy_mv6 [ Thu Sep 04, 2008 10:04 am ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
Drive around carefully until the engine is toasty....shouldn't be flooring it from cold. If your however saying that your temp gauge is playing silly buggers, then yes, get your stat replaced |
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| Author: | sk8xtrm [ Thu Sep 04, 2008 6:21 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
| Author: | sk8xtrm [ Thu Sep 04, 2008 6:25 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
ooo forgot to say cheers for the suggestions so far fella's I got day of work tomorrow before my rolling road in afternoon  so im going to go over everything to see if i can correct this niggly little thing.
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| Author: | onslack [ Thu Sep 04, 2008 6:35 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
| Author: | sk8xtrm [ Thu Sep 04, 2008 6:53 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
| Author: | onslack [ Thu Sep 04, 2008 7:03 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
i only say the temp sensor as mine run like a sack of shit, but that combined with my timing being out it was even worse! i replaced mine and it made it a bit better let us know how you get on
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| Author: | james_rs [ Thu Sep 04, 2008 7:44 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
What i mean is if you put a thermostat in that opens earlia the engine will stay a bit cooler, and if it seems to run better when its cool then
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| Author: | cs detailing [ Thu Sep 04, 2008 10:46 pm ] |
| Post subject: | Re: see if anyone can answer this strange running issue!!! |
OOOOOOOO miss read by me, i thought you said when "its" cold.... not when the "engine is cold" lol scrap my reply 
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