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vetter broke down..
- Thread starter Slolane
- Start date
i think its a sign to pay off my deep pocket 6$ debts..fucken karma..
whats your fuel pressure at? When you turn the key to the on position do you hear the pump? I dont think vacuum leak. For sure not an o2. My opinion my first check is lack of fuel (pump is dieing). Maybe maf or tps sensor, but it should give you a code. Engines need 3 major things to run...Fuel,air and spark. You are getting lean codes. If you were getting fuel and no spark it would be rich. The maf tells the comp how much air is coming in, and tells how much fuel is required. The tps sensor basically knows the amount the throttle blade is open and similar job as maf. Hope this helps.
If you have the stock intake still, just swap it back. Its easy enough and you wont have to worry about the dealership nit picking.
If you have the stock intake still, just swap it back. Its easy enough and you wont have to worry about the dealership nit picking.
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2svtfoci
Guest
if it were the fuel pump i dont think it would start at all. i say maf or tps
Some fuel pumps will pressurize the fuel rail high enough to start it but then the weak pump cannot maintain the line pressure. Seen this happen before. I would check fuel pressure first. Hook up a gauge and check it with the pump on and engine not running then see what it does when you start it.
It should only drop slightly.
I've also seen another thing cause issues similar to your description is a clogging catalytic. If it's partially clogged you need to keep the rpm's up because of the increased backpressure. If you rev it does the rpm's seem to increase slower as the rpm's increase?
Also as an Idea, my MAF sensor had the same symptoms when it failed on the prix, it threw a lean bank 1, multiple misfire, and a MAP code. The car would stall @ idle, but if I gave it a little gas, like 1200rpm+ it would run ok..... I don't know much about the LS6, but if it runs the GM MAF and MAP combo, you should be able to run the car with the maf unplugged, and see if it runs better (not always, my car wouldn't run w/o it plugged in) Some have good luck testing this way......
just hope fucken GM doesnt tryen pulling some bullshit and blame it on a intake..
I think you'll be ok! My stock 63k mile 3800 blew up a year and a half ago. I had an intake on it, nobody asked any questions
Yeah it would if the pump hasnt failed completely. I had a ford lightning and it has a dual pump setup. The pumps blew off the feed hose and wasnt able to get the correct amount of fuel and it did this exactly. I just unhooked the maf and got it home and dropped the tank and fixed.
With the maf unhooked it should run. It will idle high and basically run in open loop...dumping extra fuel.
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