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bingo296 11-12-2012 05:47 PM

Acceleration issue
Hi everyone and thanks in advance for reading this. I Drive a 2003 Mach 1. I am having an issue with of acceleration sorts. When I accelerate my car kinda lags a bit. I don't know why it does it. I have been told it has something to do with my ignition coils or something similar I was wondering what the best way was to check them. and if anyone has any other ideas.

KULTULZ 11-12-2012 10:35 PM

Re: Acceleration issue
Easiest way out is with a scan tool. Not only will it show any trouble codes but the good ones will display engine data.

bassman97 11-16-2012 09:51 AM

Re: Acceleration issue
This fits better in the 96-04 section vs. the 2011 section...

Anyway,have you noticed any other symptoms (mis-fire, bad vibrations, odd idle, etc.)? As Kultulz says, a scan tool helps narrow things down quite a bit. My best guess though would be plugs (mine died well before 100k so if you got some miles on yours, this is a good start), bad O2 sensor (if you replace it, get Motorcraft only as Ford plays some games with them), or a dirty MAF (especially if you have a K&N filter). Less likely but also possible are a bad FPR, coil(s), sticky EGR valve or a bad DPFE sensor. A vacuum look could also be very possible. As you can see, a scan tool can help narrow things down a bit.

cometman 11-18-2012 04:59 PM

Re: Acceleration issue
Check fuel pressure.

Mroldfart2U 11-18-2012 05:02 PM

Re: Acceleration issue
Change the fuel filter, cheap n easy to eliminate...

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