cold start problems
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cold start problems
I have a 2005 f250 5.4, it seems when it is cold outside it doesnt want to start , has done this three or four times , spray starting fluid in the throttle body will fire up, no problems after it has started once, just had a tune up new fuel filter, changed the fuel pump driver module, thinking it could be it , still wouldn't start ,does anyone have any suggestions? any thing would be appreciated thank you
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From: Stephensville WI
When was it last tuned up?
Have you had the truck scanned for error codes?
Have you checked the fuel pressure at the rail?
How old is your battery? Does the engine spin OK?
Have you had the truck scanned for error codes?
Have you checked the fuel pressure at the rail?
How old is your battery? Does the engine spin OK?
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just had a tune up, haven't checked the fuel pressure, no error codes show, brand new battery, it turns over but acts like it is not getting fuel, minute you spray starting fluid it will crank, was cold this morning and it fired right up I am stumped.
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From: Stephensville WI
What was done at this tune up?
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It was doing this before I took it to be tuned up, I was hoping maybe a cop was bad or fuel filter, I took it to the ford dealer where I originally bought the truck, changed the plugs and all the cops, new fuel filter and flushed the tranny and added new fluid and an additive, I also installed the new fpd
Fleet Owner
Joined: Apr 2012
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From: Spanaway
I was thinking the same. Below 70F ?
Also have you checked to see if the MAF is clean. My 2002 Ranger would
get a bit snotty at startup when it was dirty. Ford will tell you that they
can't be cleaned. But you can so long as you use the right stuff and let
it dry before you reinstall it and try it.
Sean
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fpd fuel pump driver module ,sorry I forgot the m fpdm
It seems when the temp drops down like below 55 degrees it does it, or when it is real dewy or damp, I live in the panhandle of Florida it dips down into the 20's and 30's here sometimes but warms right back up it's nice.
I know this is a stupid question but what controls the choke ? The idle air control valve or the throttle position sensor? I know my truck is drive by wire right? Meaning no throttle cable persay, because to me it acts like it is not getting fuel, or choking correctly upon start up, because with the starting fluid it will start right up
It seems when the temp drops down like below 55 degrees it does it, or when it is real dewy or damp, I live in the panhandle of Florida it dips down into the 20's and 30's here sometimes but warms right back up it's nice.
I know this is a stupid question but what controls the choke ? The idle air control valve or the throttle position sensor? I know my truck is drive by wire right? Meaning no throttle cable persay, because to me it acts like it is not getting fuel, or choking correctly upon start up, because with the starting fluid it will start right up
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From: Stephensville WI
3V engines do not have idle air control valves, so that isn't the issue.
Throttle position sensor could be a possibility. It seems like somehow the cold start cycle (where the injectors will make the mixture rich to simulate a choke) is not happening.
Throttle position sensor could be a possibility. It seems like somehow the cold start cycle (where the injectors will make the mixture rich to simulate a choke) is not happening.
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Joined: Nov 2012
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From: Onlsow, NC
If everything else checks good, start the truck up and take off the oil fill cap. If you have exhaust coming out, then your piston rings are gone. That will definatly cause some starting problems. Also worth noteing: starting fluid is notories for burning up piston rings. Only takes a whiff.
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