Mechanics

WHAT CAN I DO WHEN MY 98 4.2 WHEN I ACCELERATE IT STAYS AT THE SAME SPEED AND DOESNT ADVANCE I CHANGED THE COIL MODULE THINKING IT WAS THAT BUT IT WASNT. IF ITS THE FUEL PUMP WHAT DO I DO AND HOW MUCH WOULD IT COST?

1998 Ford F-150 • 40,000 miles

Stays the same speed doesnt advance and it shakes when I accelerate I dont know what it can be. I changed the coil module yesterday thinking that was it
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Jimmy1719
April 25, 2012.



Do you have a check engine light?

Check the mass airflow and throttle position sensor

Rasmataz
Apr 25, 2012.
No doesnt have the check engine light on

Tiny
Jimmy1719
Apr 25, 2012.
Scan anyway as not all codes will set a check light, is this a throttle cable engine or drive by wire?

Mhpautos
Apr 25, 2012.