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I have a 2002 Ford Escape. Replaced the iac valve and it…

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I have a 2002 Ford...
I have a 2002 Ford Escape. Replaced the iac valve and it wouldn’t start. Disconnected battery and next day it ran fine. Yesterday it wouldn’t start again. Charged battery fully still won’t run. From what I can tell no fuel is getting to the fuel rail. Checked the fuel pump relay by placing one that works into its slot. Still won’t run. Is it possible that the fuel pump went south? I forgot to disconnect battery when I replaced the iac. Could that have hurt the pump? The iac is motorcraft and not aftermarket so I doubt I got a bad replacement.
Submitted: 7 months ago.Category: Ford
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Answered in 22 minutes by:
12/29/2017
Ford Mechanic: Greg, Technician replied 7 months ago
Greg
Greg, Technician
Category: Ford
Satisfied Customers: 7,492
Experience: 17 years Shop Owner /Technician. 27 years experience,
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Hi name is ***** ***** I’m reviewing your question and I will get back to you as soon as possible.
Rgds Greg
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Ford Mechanic: Greg, Technician replied 7 months ago
You said would not start . So the engine is cranking good and strong
But engine will no catch and run .
Do you have the use of a scan tool or code reader .
Rgds Greg
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Customer reply replied 7 months ago
it cranks good and strong. It also started fine (but idled poorly) before I replaced the iac. No scan tool, sorry. What do you suspect?
Ford Mechanic: Greg, Technician replied 7 months ago

I would first check the cleanliness of the throttle body first

if the throttle plate is a little open could cause you this problem .

But you need a code reader see if you still have a IAC malfunction code ,your problem could be a wiring or something else .

Vacuum leak .engine tune up etc .

Was it doing this before the IAC replacement .

Greg

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Customer reply replied 7 months ago
Gotta love mechanics today, they can be replaced by a code reader. All electric connections were checked, no vacuum leaks. Forget it
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