popping/dying when accelerating
#11
If both your trims are maxed you have to think of the something that pertains to the whole engine. Things I'd be checking are fuel pressure, intake manifold gasket leaks or intake tube leaking after the MAF somewhere. It's going to be an air leak or not proper fuel pressure. If your trims are maxed positively, that means you're extremely lean. (positive trims means it's trying to add fuel).
#12
TECH Junkie
iTrader: (31)
What ever posessed you to put a walbro unit in? Did you need it? Certainly 44lb/hr inkjectors work fine on a stock pump. Get that chinese piece of crap out of these and get a genuine delphi pump. I think you'll be pleasantly surprised. First things first though, get a fuel pressure guage, hook it up, tape it to the windsheild so you can see it while driving and watch the pressure as you lay into the throttle. I bet you see a substantial drop when driving or under any kind of load.
#13
What ever posessed you to put a walbro unit in? Did you need it? Certainly 44lb/hr inkjectors work fine on a stock pump. Get that chinese piece of crap out of these and get a genuine delphi pump. I think you'll be pleasantly surprised. First things first though, get a fuel pressure guage, hook it up, tape it to the windsheild so you can see it while driving and watch the pressure as you lay into the throttle. I bet you see a substantial drop when driving or under any kind of load.
#15
TECH Apprentice
Join Date: Feb 2005
Location: Michigan
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Did you replace the O2's with Delco ?
Bosch are only good for around 30K miles...and then they recommend replacing them.
I know its too late now....but if they flake out again... you'll know.
#16
Where's the Beef?
iTrader: (8)
Agreed for the most part. Generally Sensors, o-ring seals for gas tanks, distributor caps and a few other items are best from the OEM's. Don't hesitate to search out that part number on the web...there are many off-dealerships that sell at cost pricing.
Did you replace the O2's with Delco ?
Bosch are only good for around 30K miles...and then they recommend replacing them.
I know its too late now....but if they flake out again... you'll know.
Did you replace the O2's with Delco ?
Bosch are only good for around 30K miles...and then they recommend replacing them.
I know its too late now....but if they flake out again... you'll know.
My dad popped my hood and seen the battery was ACDELCO and was amazed that I still had the factory battery. I think its a 4 year battery and i'm on year 5.
#18
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Join Date: Feb 2005
Location: Michigan
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It should last more than 40K..but like everything these days...
Delco batteries are generally pretty good. But, being your in year 5... carry a pair of jumper cables with you, and save up a bit of cash and tuck it in the glovebox, especially with winter coming.
#19
your truck is rich. to have fuel trims like you do you need to lean out the motor. if you went from headers to manifolds then you are rich. when you go from manifolds to headers you run lean. its just the opposite
have someone play with your VE table for little bit of time and be done
popping and sputtering is direct relation of overly rich
have someone play with your VE table for little bit of time and be done
popping and sputtering is direct relation of overly rich
#20
Where's the Beef?
iTrader: (8)
I hear ya. I have the same problem here. If nothing else, around 40K miles, shop online for one and have it handy.
It should last more than 40K..but like everything these days...
Delco batteries are generally pretty good. But, being your in year 5... carry a pair of jumper cables with you, and save up a bit of cash and tuck it in the glovebox, especially with winter coming.
It should last more than 40K..but like everything these days...
Delco batteries are generally pretty good. But, being your in year 5... carry a pair of jumper cables with you, and save up a bit of cash and tuck it in the glovebox, especially with winter coming.
your truck is rich. to have fuel trims like you do you need to lean out the motor. if you went from headers to manifolds then you are rich. when you go from manifolds to headers you run lean. its just the opposite
have someone play with your VE table for little bit of time and be done
popping and sputtering is direct relation of overly rich
have someone play with your VE table for little bit of time and be done
popping and sputtering is direct relation of overly rich