sputter vibration in acceleration
01-03-2013, 08:23 PM
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sputter vibration in acceleration I posted this in the fuel section first but no reply so I'll put it here.
at idle it runs fine. Give it a little gas or half throttle it sputters, vibrates, shakes, pops, crackles......lol. RPMs will rise but acceleration is next to nothing. It will do this for a couple minutes then it feels like fuel is making it through and returns to normal. This us mostly at start up but has happened after driving a while a couple times.
Also while this is happening, if I give it full throttle it will all the sudden return to normal while I start on it but go back to half or less throttle it starts acting up again. And again only for a few minutes then returns to normal driving.
It has been doing it occasionally but becoming more common and almost every time I start it up and drive.
I just replaced the fuel filter, did not help. I have not had a chance to check pressure but I plan on it. I will also try cleaning the maf tomorrow and check wires.
Car has a Racetronix fuel pump. Fairly new from what I was told I just got the car about 3 months ago. 2.5 5.3 heads,, 228r Cam, fast 90/90, m6 4:10s
thinking pump might be going out. Any other thoughts or things to check other than plugs, wires,o2s, maf? I don't want to end up stranded or throw parts at it. Thanks
at idle it runs fine. Give it a little gas or half throttle it sputters, vibrates, shakes, pops, crackles......lol. RPMs will rise but acceleration is next to nothing. It will do this for a couple minutes then it feels like fuel is making it through and returns to normal. This us mostly at start up but has happened after driving a while a couple times.
Also while this is happening, if I give it full throttle it will all the sudden return to normal while I start on it but go back to half or less throttle it starts acting up again. And again only for a few minutes then returns to normal driving.
It has been doing it occasionally but becoming more common and almost every time I start it up and drive.
I just replaced the fuel filter, did not help. I have not had a chance to check pressure but I plan on it. I will also try cleaning the maf tomorrow and check wires.
Car has a Racetronix fuel pump. Fairly new from what I was told I just got the car about 3 months ago. 2.5 5.3 heads,, 228r Cam, fast 90/90, m6 4:10s
thinking pump might be going out. Any other thoughts or things to check other than plugs, wires,o2s, maf? I don't want to end up stranded or throw parts at it. Thanks
01-06-2013, 07:43 PM
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Damn I hope not. I'm thinking not though. I ran up to Oreillys to check codes and got a bunch of o2 codes. Cleared them and it ran fine home and to work the next day then when the cycle went through guess the codes came back and is acting up again. But the problem is hit and miss so i'm not 100% sure about that lol. I'm going to get new o2s anyway. I'll swing by tomorrow and scan it again to see what codes came back.
The guy I bought it from says that the Racetronix pump is only like 6 months old. But it was the second one they put in after 3 months of the first one being in
The guy I bought it from says that the Racetronix pump is only like 6 months old. But it was the second one they put in after 3 months of the first one being in
