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Poor Peformance in Hot Weather 

 

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 Post subject: Poor Peformance in Hot Weather
Posted: Tue Nov 28, 2006 7:18 pm 
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Hi everyone, wondering if anyone has any advice on this. My AUII has traveled 88000 k's is fully serviced with all filters, plugs & trans service. All standard except for tickford snorkel.

On warm to hot days, lets say 30degrees plus, the car changes from a smooth drive to a rough, gutless drive. The car exclerates poorly, delays & shifts awkwardly. It gets worse with the AC on, naturally.

Now i've driven a range of different cars including other ford I6's, and I can say I notice a drop in performance, but this just seems to great.

The cars temperature never creeps up to halfway, It doesn't miss fire, use coolant or anything like that. Any suggestions?
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Posted: Tue Nov 28, 2006 8:34 pm 
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mine does the same

 

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Posted: Tue Nov 28, 2006 8:51 pm 
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So it could possibly be normal?
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Posted: Tue Nov 28, 2006 9:00 pm 
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i doubt its normal although can't offer any explanation.
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Posted: Tue Nov 28, 2006 9:02 pm 
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Normal. Everything gets hot, expands, oil is water..

 

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Posted: Tue Nov 28, 2006 9:04 pm 
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Its not normal, take it back to the people that serviced it. tell them about the problem. the service should be cover for at least 6 months as part of their guarantee. read the fine print behind the invoice.

 

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Posted: Tue Nov 28, 2006 9:05 pm 
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then you need to use a thicker viscousity oil for operating temperature.how can a dealer in an australian climate sell a car that runs s**t on a hot day.there must be a fix!
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Posted: Tue Nov 28, 2006 9:18 pm 
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Well the car runs a 15/40 viscosity as I found the 10/30 was just too thin, but it still ran the same with the 10/30.

I do all my servicing, it has fresh oil & filter, new plugs, leads & fuel filter. Trans service was done by a professional, as far i'm aware there is no tune up procedure for the AU engines?

I do find it weird for an aussie built car to suffer from hot weather.

I'm wondering if there could be an issue with the map sensor, as this measures incoming air temperatures, possibly not giving the ecu the right readings.
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Posted: Tue Nov 28, 2006 9:30 pm 
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possibility,unfortunately there aren't a huge amount of AU fellas on this site to share their experiences,try unplugging the MAP when its stuffing up and see what that does.otherewise you could try a thicker oil again,i use a penrite thats 20/50 to bring up my pressure and that seems to keep the car quieter when its really hot.
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Posted: Tue Nov 28, 2006 9:31 pm 
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tried rsetting ecu as well?and run diagnosis.
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Posted: Tue Nov 28, 2006 9:36 pm 
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I will try the ecu reset this weekend, how to run the diagnostics?
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Posted: Tue Nov 28, 2006 9:38 pm 
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good question dunno on AU,if you have a gregory's or haynes that will tell you,i'm guessing the heat today reminded you of the problem coz it was bloody hot!
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Posted: Tue Nov 28, 2006 9:41 pm 
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hmmmm gregorys says that the diagnostics isn't available on the AU & that it could be done at Ford.

Yes the heat did remind me, didn't drive it today but a few days back when it was about 34 and it was rather annoying to drive.
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Posted: Tue Nov 28, 2006 11:09 pm 
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id say check the map and do a diag.

you might want to put the dash in to the diag mode too, that way you'll see if the thermo is working properly or if the radiator is blocked. other then that its a bit strange.

might want to reset the ecu and see if that helps too

 

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