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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23001
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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HAve F150 1999 extreme missing when I accelerate. Doesn't

Customer Question

HAve F150 1999 extreme missing when I accelerate. Doesn't shift until3000+ rpms.
JA: How old is the transmission? Have you checked the fuel filters?
Customer: Transmission original have not check fuel filter. Runs well at high speeds but when you go up hill it won't downshift. And have to keep it out of overdrive.
JA: What is the model of your '99 Ford?
Customer: F150 v8. 4.6L
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes want to repair myself, don't know where to begin
JA: Anything else you think the mechanic should know?
Customer: 257,000 miles.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Ford Mechanic about your situation and then connect you two.
Submitted: 3 months ago.
Category: Ford
Expert:  cloe0626 replied 3 months ago.

have you checked the transmission fluid and filter

Customer: replied 3 months ago.
can' check the transmission filter without tearing it down.
Customer: replied 3 months ago.
How does a transmission problem cause the engine to miss
Expert:  cloe0626 replied 3 months ago.

no the transmission pan has to be dropped

Customer: replied 3 months ago.
Is it possible that it would be a vacuum line somewhere?
Customer: replied 3 months ago.
Expert:  cloe0626 replied 3 months ago.

sorry my internet connection was acting crazy i was just going by where you said it wouldnt downshift but yes it is possible that you have a vacuum leak is it missing at idle

Customer: replied 3 months ago.
No, not missing at idle
Expert:  cloe0626 replied 3 months ago.

do you have any codes present

Customer: replied 3 months ago.
Only service engine soon.
Expert:  cloe0626 replied 3 months ago.

have you had it scanned to see what code it is giving that will tell you where the miss at

Customer: replied 3 months ago.
Expert:  cloe0626 replied 3 months ago.

thats going to be your first step any parts store will do it for you for free but the code will narrow down where the miss is at i can guess at all you would like but with out the code it is just a guess

Customer: replied 3 months ago.
Ok. Thank you.
Customer: replied 3 months ago.
How may I get a refund of my fee as this will not resolve anything until I have the time to go and get a code read.

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