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Chevy S10 - GMC S15 and Sonoma Stalling/Dying issues

168 messages,  Last post on Nov 02, 2009 at 11:36 AM

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#139 of 168 High idle speed by fws4 Mar 16, 2009 (9:57 am)
My 1998 S 10 developed a bad leak in the exhaust flex pipe, and before I could fix it, it also developed a high idle at all times. Could the leak be causing the hi idle? I pulled codes 137, 451, and 507. Would the O2 code (137) cause hi idle? 507 is the Idle Control System, but I can't find the sensor to check it. Just started this, and trying to focus so I don't just start replacing working sensors. Cannot find any vacuum leaks so far. Cleaned the intake butterfly - it is closed at startup. Where can I find an illustration of sensor locations? My Haines manual doesn't show their locations. Thanks in advance. FredS
#140 of 168 Re: 93 Sonoma Stalled on highway [doc15] by mrtrue Apr 11, 2009 (4:35 pm)
Replying to: doc15 (Jan 03, 2009 6:26 am) With my '92 (4.3), the problem was solved by replacing the distributor. It seems that the magnetic pick up in the distributor signals the injectors when to fire, and with how much fuel, so when it gave a weak signal, there was virtually no stream of fuel, and them , after a few rotations there was a strong signal, plenty of fuel. Eventually almost no signal, so not even enough fuel to start the engine. Of course, to get to this conclusion, I first put a $50 ECM in the old distributor, and a $40 coil. Remember, electronic parts are non-returnable, so I would recommend changing out the $120 distributor rather than the ECM, as it solves many other ignition related issues on these older motors.
#141 of 168 99 s10 4.3 slow acceleration sometimes by coffeenbeer Apr 16, 2009 (6:38 pm)
I see alot of you with the same problem I am having. My truck will all of a sudden bog down when I try to accelerate. If I'm really light on the pedal it will slowly get up to speed but if I give it a little gas the rpms hit about 2500 and the car doesn't move. I replace the fuel pump, filter, spark plugs and wires, cap and rotor, removed catalact converter. Its been checked twice by my mechanic. It may be that damn fuel pump even though its been tested. It wasn't oem though as most would recommend. I really wish I had one, I got a 1 year on the pump but I don't think I can actually get a refund. Is there anything anyone has figured out with this?
#142 of 168 2500 rpm by gonogo Apr 17, 2009 (7:06 am)
2500 rpm and not going anywhere sounds like a transmission problem, slipping.
#143 of 168 1991 s-10 cuts off when turning steering wheel by slvchris Apr 21, 2009 (3:50 pm)
The truck shuts off when you turn the wheel all the way. Have replaced the ignition switch. sensor on power steering line. Checke dlines for blockage. This one has me stumped. Any help would be great. Thanks
#144 of 168 1998 Sonoma Stalls...then restarts after 5 min by dimmermanj Apr 24, 2009 (1:28 pm)
So basically i have a 98 sonoma with about 125xxx miles on it.. i just bought it from a guy and he had told me truck ran fine and the fuel pump had recently been replaced.. what happens is i will drive down the road for almost exactly 10 miles or so, then the truck typically will surge and die, and will crank over but not start unless its left alone for about 5 min...the truck also spits out a obd2 code #1632 which is a theft deterrent fuel shutoff code..i was told a common result of this issue had to do with the ignition cylinder and the sensors surrounding it, so i replaced them, but here i am still with the same problem. does anyone have any advice on how to fix this or know what is causing the problem? -Jim
#145 of 168 2001 sonoma shuts down when hot by ernestdel Apr 30, 2009 (2:38 pm)
when i mean hot i mean outside temp. 90 degree day. I`ve replaced ignition module,coil,distributor and rotor,fuel pump, fuel pump relay,crank shaft position pickup,fuel filter(of course),plugs and wires.On a hot day it will buck then shut down. 20 to 30 minutes of cool down it will start and run for miles. never a problem in winter. new thermostat, doestn`t really over heat, gauge reads 200f. any help appreciated. Replies to this message: gonogo (May 01, 2009 7:09 am)
#146 of 168 Re: 2001 sonoma shuts down when hot [ernestdel] by gonogo May 01, 2009 (7:09 am)
Replying to: ernestdel (Apr 30, 2009 2:38 pm) Sounds like vapor lock, some where a fuel line is getting too hot.
#147 of 168 Sonoma Pickup won't start by slstusmc May 04, 2009 (1:55 pm)
My Dad's '94 Somoma has no fuel to the carb. What fuse supplies power to the pump, and where is it? The relay is under the dash in the middle, but which relay is it? I don't think there is voltage going to the pump. If it is the pump, I was told the best way to replace it would be to raise the bed. Can an aftermarket inline electric fuel pump work to replace the pump in the tank? Thanks for your help!!
#148 of 168 Re: when it wams up it dies [bigdaz] by bigdaz May 14, 2009 (1:43 pm)
Replying to: bigdaz (Sep 10, 2008 11:49 am) The final fix. Sorry for not getting this posted sooner. Removed the aluminum bracket that holds the ignition control electronics and coils. Cleaned up and insulated using fiber washers from ACE (to prevent heat transfer from the engine block thru the bracket into the ign cntl elec & coils. Applied generous anount of heat sink compound to the ign cntl elec and made a wire strap to connect the bracket to engine block just in case gnd is needed thru bracket. Stalling problem no more!!! You may need to also replace the ign cntl elec and/or coils if damaged by over heating.

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