TXR05 Member 181 Member For: 13y 8m 8d Gender: Male Location: Brisbane QLD Posted 01/03/12 05:58 AM Share Posted 01/03/12 05:58 AM So I don't know whether or not I've mentioned something here before.But for the last few months when I get up it, mainly in 2nd and 3rd gear, at about 4000RPM and full boost, the car seems to what I think 'surge' But after it has its little hickup, it seems to be fine but not make a great deal of power... almost like its not making boost or very little, yet the gauge still says 12PSI. It never spikes, or the boost never drops off. Just surges once or twice then just doesn't make power. Yes also, the car has plenty of fuel too. Plugs look fine, and the coils are pretty much perfect. New fuel filter, and oil. it's only ever run on 98 octain.I've been thinking maybe it's my fuel pump, but I'm not sure.Also today while it did it, 3rd gear full throttle. It compressor surged.. Now I have it dosing already, but it did it while I was on WOT.I've been searching for ages and cant find anything that helps me.So can someone help me?!? Is this my pump on its way out? It is an aftermarket pump, and it does get VERY noisey when I do a mountain run. 1 Link to comment Share on other sites More sharing options...
MiKa Donating Members 4,243 Member For: 18y 6m 1d Gender: Male Location: Melbourne, VIC Posted 01/03/12 06:20 AM Share Posted 01/03/12 06:20 AM (edited) When my car was having surge issues, the pump got very loud, the way it was installed didn't allow it to sink to the bottom of the tank and at even 1/2 and a bit over it would surge.They have a filter on the actual fuel pump which may need changing.Could be the pump on its way out.Does it ever backfire while surging? As mine did a few times... Lean backfire?If you put it on a dyno, thy will be able to tell weather its running out of fuel at what rpm etc... Edited 01/03/12 06:21 AM by MiKa Link to comment Share on other sites More sharing options...
TXR05 Member 181 Member For: 13y 8m 8d Gender: Male Location: Brisbane QLD Posted 01/03/12 06:44 AM Author Share Posted 01/03/12 06:44 AM (edited) There is a pop out of the exhaust. Almost like traction control goes off sort of pop but not a loud bang just a pop lol after the pop is when it seems to have no power. But like I said it only surges for like half a second to 1 second. I'll pull the pump out and check the filter on it.I also don't want to spend the money on a dyno if I don't have to. I don't have a great deal of money haha and with the fuel prices going up, I have even less! Haha. Edited 01/03/12 06:45 AM by TXR05 Link to comment Share on other sites More sharing options...
MiKa Donating Members 4,243 Member For: 18y 6m 1d Gender: Male Location: Melbourne, VIC Posted 01/03/12 06:52 AM Share Posted 01/03/12 06:52 AM Yea it's not a massive pop.. You say it only surges for a second, do you keep flooring it? Or does it surge then you back off? Link to comment Share on other sites More sharing options...
TXR05 Member 181 Member For: 13y 8m 8d Gender: Male Location: Brisbane QLD Posted 01/03/12 08:23 AM Author Share Posted 01/03/12 08:23 AM I keep going at it. but it feels like it looses a bit of power. Not all of it, just some of it...Fuel pressure regualtor ? Link to comment Share on other sites More sharing options...
xr6t_ute Donating Members 2,281 Member For: 17y 7m 28d Gender: Male Location: south east suburbs Posted 01/03/12 09:00 AM Share Posted 01/03/12 09:00 AM If its popping it could be running out of fuel, can be fuel pump or regulator, if I were you id throw it on the dyno and check the afrs on a full throttle run, and dont go thrashing it, as it can result in a dead engine, and then were talking thousands of dollars. Link to comment Share on other sites More sharing options...
MiKa Donating Members 4,243 Member For: 18y 6m 1d Gender: Male Location: Melbourne, VIC Posted 01/03/12 12:17 PM Share Posted 01/03/12 12:17 PM With stupid. Link to comment Share on other sites More sharing options...
TXR05 Member 181 Member For: 13y 8m 8d Gender: Male Location: Brisbane QLD Posted 01/03/12 08:19 PM Author Share Posted 01/03/12 08:19 PM So can it be anything else ? Because if they are the only 2 things that could be causing this, I'll replace them with something bigger. Link to comment Share on other sites More sharing options...
xr6t_ute Donating Members 2,281 Member For: 17y 7m 28d Gender: Male Location: south east suburbs Posted 02/03/12 03:11 AM Share Posted 02/03/12 03:11 AM It can be many things, but those two mentioned sound like they could be the problem, that's why I said to throw it on the dyno. Link to comment Share on other sites More sharing options...
TXR05 Member 181 Member For: 13y 8m 8d Gender: Male Location: Brisbane QLD Posted 02/03/12 06:30 AM Author Share Posted 02/03/12 06:30 AM Emailed capa. Just have to wait for a reply now. Link to comment Share on other sites More sharing options...
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