Truck running a little funny
02-09-2008, 12:41 PM
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Truck running a little funny
ok i have the 4.4 in my truck on 7 and if i get on it about 3/4 skinny pedal it will pull great but sometimes it will feel like.......... i want to say surge. it will pull and then stop for just a split sec. and then start pulling again. not sure what is going on but it is starting to bug me.
02-09-2008, 02:27 PM
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well when my commander was working it was on 40 psi. so i don't think it is fuel. and as far as what system i have i have a walbro pump big line bypass and a 2 micron filter that was just changed about 2k miles ago.
02-09-2008, 02:53 PM
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02-09-2008, 04:16 PM
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I agree. you need to see what you fuel pressure is doing while it's surging. I remember listening to your pump that day at my house. It's possible you got a bad pump. I take it you don't have your commander working yet? Hook up a manual guage temporarly to watch it.
Last edited by TORQUE BEAST; 02-09-2008 at 04:16 PM. Reason: can't spell
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05-06-2008, 08:46 AM
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05-06-2008, 11:16 AM
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Did you ever replace your clutch yet? Mine used to do it too, but doesn't anymore, i just chalked it up to the clutch slipping. With the OFE it pulls smooth and grabs you hard when the turbo lights!
05-06-2008, 03:41 PM
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i haven't yet but plan on doing it in the next few months. hope it solves the problem.
05-09-2008, 06:43 PM
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My surge seems have stoped since I pluged my waste gate. I'm guessing it was the waste gate actuator. I wasn't reduceing the boost presure or changeing the fuel pressure. When the map reads full boost it backs the fuel off some but then it thinks it can have more fuel and the cycle isn't wide or long enough to show boost changes but you can sure feel it.
On my truck it started around 2100rpms and stoped around 2500rpms.
On my truck it started around 2100rpms and stoped around 2500rpms.
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