Last post on Nov 15, 2013 at 8:17 PM
You are in the Chevrolet S-10 & GMC S15 Sonoma
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Chevrolet S-10, GMC Sonoma, GMC S-15, Truck
#126 of 240 2000 GMC Sonoma 4.3 V6 bucking and cutting out
Dec 08, 2008 (3:37 pm)
ive been dealing with this problem for months now...replaced almost everything...fuel pump, spider injector(which was conversion to multiport), fuel filter, aif filter, spark plugs(twice) spark wires, distributo cap and rotor as well as distributor itself, alternator, battery, ignition coil, map sensor, catalytic convertor, but the truck still wants to buck and cut out when cruising on highway and either going uphill and putting it under a load...or just when i pass a car and come off the gas...does it one day, then not the next, then does it for a week straight, then it goes off....only thing is one day when i shimmied the main harness that runs across the intake plenum it kinda got better for a day or two....did it again and i got no help....im about two steps away from driving it over a cliff i need some help!!!
#127 of 240 Re: 2000 GMC Sonoma 4.3 V6 bucking and cutting out [drew5385]
Dec 08, 2008 (3:40 pm)
almost forgot, MIL kicks on sometimes when it hesitates, codes is a po452 evap emissions, and when it gets bad i get a bunch of codes like tp sensor and map sensor, which i have already replaced both of those too.....
#128 of 240 Chevrolet S-10 stalling/dying issues
Dec 09, 2008 (6:25 pm)
I took my S-10 to three shops (Chevy dealer was the last one). Bottom line is that the fuel pump was not holding pressure while driving. I bought an "original equipment" fuel pump online and had the first shop install it. That resolved the problem. NOTE: Don't skimp on the replacement fuel pump - the off brand ones go bad within a few months. Good info from the mechanic.
#129 of 240 Re: Stalling/dying [mthompson1]
Dec 15, 2008 (4:18 pm)
I'm having the same problem but hasn't thrown that code. Have you ever found the problem?
#130 of 240 Re: Stalling/dying [hayman1]
Dec 17, 2008 (1:37 pm)
I found the problem the small rubber line between the pump and line in the tank ruptured.
#131 of 240 93 Sonoma Stalled on highway
Jan 03, 2009 (6:26 am)
Had my truck just stall while driving on the road. First thing I though of was maybe a fuel problem, changed the filter and still no luck. Did not think of it at first but realized the fuel pump was not kicking on, also found the battery was drained down. Took the alternator and had it checked and found it was charging at 17 V. Also found the ECM fuse was blown. Changed the fuse and the alternator and the truck started right up, ran for about 3 min and shut right off again. The ECM fuse keeps blowing. Replaced the Fuel pump relay and still no luck. When you turn the key on it instantly blows the ECM fuse. Take the fuel pump relay apart and the fuse does not blow, but naturally the truck won't start. Also just for the sake of spending money to help the economy, I replaced the ECM. Help!!!!!!!! Doc
#132 of 240 Re: 93 Sonoma Stalled on highway [doc15]
Jan 03, 2009 (7:47 am)
As you know that fuse is also for the fuel pump. Disconnect the fuel pump at the tank, if it still blows, check the fuel pump wiring for a short to ground.
#133 of 240 Stalling / Dying S10
Jan 03, 2009 (7:55 pm)
I have also done everything I could think of but still the truck will idle fine but won't move when driving. Fuel pump checked ok, new fuel filter, new air filter, spark plugs, spark wires, distributor cap and rotor. Truck still wants to buck and cut out when cruising going uphill and putting it under a load. Has anyone had any luck with cleaning up the injector contacts under the manifold cover or by replacing the PCM?
#134 of 240 Re: 93 Sonoma Stalled on highway [gonogo]
Jan 07, 2009 (7:10 pm)
What exactly goes bad with the fuel pump? Is it necessary to replace the whole inside the tank fuel pump to correct the problem? How hard is it to drop the tank on this truck? Sorry for all the questions, it's just things coming in my head, that I'm not looking forward to. Thanks, Doc
#135 of 240 Re: 93 Sonoma Stalled on highway [doc15]
Jan 08, 2009 (8:27 am)
The motor part, the brushes wear out. They come as a module, the best prices are online, I recommend another Delco.
If I was to do mine I would loosen all the bolts on the passenger side of the bed, leave the nuts on a few threads. Don't forget the wiring, ground, tail lights, fill hose etc.. Remove all the bolts on the driver side, jack up the driver side until you have enough clearance. You must trig the bed really good so it will not fall on you.
Well dropping the tank is not too bad if empty, if lots of fuel you need a jack.
FWIW the pumps don't usually blow the fuse, a short in the wiring would.