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enfausn · 07-01-2009, 05:27 PM

Hi all. Just joined the site today and just got my project car last week. I've got an 89 LX 5.0L Notch. It hunts a little at idle. At first I figured it just needed a tune up. I tuned it up with a Summit cap and rotor, Ford Racing wires, NGK plugs, MSD Street Fire Coil, and an Accel Ignition Module. I set the timing to the factory 10 degrees. I also pulled out the factory intake silencer in the fender and put a new air filter in it till I can get a new cold air setup. Thing still hunts up and down at idle a little. I can hear the fuel pump speeding up and slowing down with the engine speed as it idles. I was wondering if anyone else had chased this problem before or if this was normal. This is the first foxbody i've ever had so I wasn't sure if this was a common thing or not. If anyone has any suggestions that'd be great......Thanks in advance.

07-01-2009, 05:27 PM	#1
enfausn 1989 Ford Mustang Join Date: Jul 2009 Vehicle: 1989 Mustang LX Location: PA Posts: 24	89LX 5.0 Fuel Pump Question Hi all. Just joined the site today and just got my project car last week. I've got an 89 LX 5.0L Notch. It hunts a little at idle. At first I figured it just needed a tune up. I tuned it up with a Summit cap and rotor, Ford Racing wires, NGK plugs, MSD Street Fire Coil, and an Accel Ignition Module. I set the timing to the factory 10 degrees. I also pulled out the factory intake silencer in the fender and put a new air filter in it till I can get a new cold air setup. Thing still hunts up and down at idle a little. I can hear the fuel pump speeding up and slowing down with the engine speed as it idles. I was wondering if anyone else had chased this problem before or if this was normal. This is the first foxbody i've ever had so I wasn't sure if this was a common thing or not. If anyone has any suggestions that'd be great......Thanks in advance.