Ford Focus cold star problems

Tiny
ZUYNUT
  • MEMBER
  • FORD FOCUS
I have a 2001 Ford Focus ZX3. When my engine is at ambient temperature, iit will not start. It will crank over and stall right out. Some starts are worse than others, but never the same. I have to hold the accelerator down to get it to idle and keep it down untill the RPMS pick up or it the engine warms up. Once the car is started, the issue does not come up again untill the engine reaches ambient temperature again (cold). The outside temps seem to have no effect on it at all. There is nothing wrong with the chargins system, plugs or wires. Fuel pump weas replaced before, but is not an issue here, no problems while running. I have had so much suggested but no one who has a similar problem posts a sollution on any boards. So far I have heard IAC, MAF, engine temperature sensor, fuel pump, fuel filter, coil pack, fuel pressure regulator and injectors. I'm not about to just start swapping parts out. Any useful info will be appriciated.
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Sunday, March 11th, 2007 AT 12:32 AM

6 Replies

Tiny
CHEVYII
  • MEMBER
Hi
Im glad you dont want to swap parts out, that is def the wrong way, your problem seems to be with engine temp as you stated, the ect (engine coolant temp sensor ) partially controls the fuel the engine needs to start, it tells the ecm how much it needs according to engine temp, if you have a thermometer and an ohm meter I can give you the rage for the iat and the ect

jim
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Sunday, March 11th, 2007 AT 9:13 AM
Tiny
ZUYNUT
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That's would be great. What, though, is a iat? I plan to buy a repair manual, but would you have any idea where these parts may be located?
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Sunday, March 11th, 2007 AT 11:30 PM
Tiny
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Iat is the intake air temp sensor this also controls fuel, when your ready post again here and we will get you started
Jim
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Monday, March 12th, 2007 AT 7:50 AM
Tiny
ZUYNUT
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My problem seemed to corrected itself shortly after posting a while back. Then, this week, it reared it's ugly head again, but now I cannot even get it to idle. It turns over quite nice, revs a little and stalls. No engine lights. I have to drive with two feet, well three since it's a manual. I can drive around all day with no problems, as long as I do not let out of the gass completly. I'm thinking about replacing the fuel filter, cleaning the MAF and replacing the IAC. Unless, that is, if you have another possible solution. I do not hav eaccess to any Ohm/voltage meters, so i'm diving in blind.
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Thursday, November 8th, 2007 AT 9:21 AM
Tiny
CHEVYII
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Has it had a tune up that you know of, and the fuel filter wouldnt be a bad idea if you dont know whan it was replaced
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Thursday, November 8th, 2007 AT 9:28 AM
Tiny
ZUYNUT
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By tune up you mean.
Plug, wires, cleaned the filter, change the oil?
Than yes.
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Thursday, November 8th, 2007 AT 9:45 AM

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