1999 Sonoma / 4.3L V6 - No Power When Accelerating
1999 Sonoma, 4.3L V6, 2 wheel drive, X engine code, about 92,000 miles.
It doesn't accelerate smoothly. It starts, runs, idles fine. Drives fine at constant speed. The problem comes when during moderate acceleration, either from a stop or when speeding up from a constant speed, i.e.: passing another car or getting on the freeway.
If I go real easy on the throttle, it runs fine and accelerates ok. But if I give it too much gas, it sputters out, misses, chokes, total loss of power. This happens under normal driving conditions. The 'check engine' light hasn't come on.
Gmc - Sonoma :: 1999 - Headlights And Dashboard Display Have Been Flickering At All RPMs
I've got a '99 GMC Sonoma that I purchased last summer. Great little rig, runs well and the previous owner took care of it. In the last couple of days the headlights and dashboard display have been flickering at all RPMs. I am guessing a bad battery or alternator, but previous related posts indicate it could be all sorts of stuff electrical.
From what I can tell from previous posts, the easier tests are
1) Voltage across the battery poles with engine off to test for a bad cell,
2) AC voltage at battery with engine running to test for alternator diode problems (should be no AC voltage, correct?), or
3) Something called the A.I.R. pump, which I've never heard of and wouldn't know how to test.
The last time I had this happen was on a 2000 Caravan, and it was the battery.
Gmc - Sonoma :: 1995 - Won't Go More Than 20 Mph?
1995 GMC Sonoma, 4.3L TBI 2-wheel drive Automatic. Will not go more than 20 MPH, will stall out and die if you try pushing on the accelerator. Had a code of 32 saying the EGR Valve. I bought and put on a new EGR Valve. Still does the same thing--no power and only 20 MPH. I'm wondering if it could be that the catalytic converter is plugged or maybe a bad fuel pump.
View 3 RepliesGmc - Sonoma :: Truck Won't Go Into Park
1996 GMC sonoma, 150k, automatic. Parked it today and it wouldn't go into park. First thought was that the cable had stretched but notice that the shift lever wasn't going all the way to the park position. Feels like something is blocking it. Tried it running as well as not running. Of course I can't get my keys out or turn the ignition all the way off so I had to unhook my battery.
View 6 Replies2002 ZR2 Sonoma 4x4 Starting Sometimes Takes A Few Tries
I'm trying to figure out what the problem with my truck is. Starting sometimes takes a few tries. It will start then stall immediately or run rough for a bit and stall or run normal. At first I thought it was electrical since I used a jump start off a battery charger and it started right up. The battery was 5 yrs old so I got a new one and it's starting better but still not all the time. I replaced the fuel filter and it didn't seem to make any difference. I tested the fuel pressure and it's at 52 PSI before and after starting. Seems to start better when warm. Runs perfectly fine after starting, no other issues.
View 3 RepliesGMC - Sonoma :: 1997 - Transmission Died - How To Fix It
Just had a quick question in regards to my Sonoma. My 97 Sonoma 2.2l transmission died on me a few weeks back and i happen to have a working 4.3L transmission from an old 2000 Sonoma i once had. My question is will it work? Am I able to bolt the 4.3L tranny to my 2.2L engine? and if they would is there anything else I would require to make it work?
View 7 RepliesGMC - Sonoma :: 2000 - Rattling At Idle With AC On
I recently bought a 2000 Gmc Sonoma SLS and it's been a headache ever since. Ever since I got it, it's made this rattling sound that only occurs when I'm both idling and when the AC compressor is on. The sound is intermittent and sounds like something rattling against a large metal pan. Whenever I turn the AC off or pick up the RPMs, it stops like it was never there.My first thought was: belt tensioner. So I popped the hood and watched the tensioner at idle and it seems to be moving back & forth a lot more than I think it should, however, there's not much give at all when I push on the belt itself.
View 14 RepliesGMC - Sonoma :: Leaking Cylinder Head Gasket
I have a 1995 GMC Sonoma pickup truck with supposedly a blown cylinder head gasket. It only has 53K original miles on it. It overheated and I had it towed to a service shop. They put in a new water pump, new coolant, new thermostat, new radiator hose and did an oil & filter change. Well, 100 miles later, I noticed my water coolant was disappearing and the oil pressure was rising. I brought it back to the same shop and after looking at it for five minutes they informed me it was a blown cylinder head gasket. They said they had no way to determine this when they were doing the repairs the first time. So, I ask the following:
1-Was it proper for the shop to do the first repair without checking for a potential head gasket leak?
2-Is there some type of testing that could have been done by the repair shop to check for coolant leaks into the engine oil? 3-Would I have saved money (labor) by having this taken care of at the time of the initial repair?
GMC - Sonoma :: 2001 - Transmission Slight Whine
I have a 2001 GMC Sonoma Highrider Edition it has the 4.3 Vortex and its 4x4 my transmission has been whining slightly it has 169,000 miles on it runs and shifts great it when's when ever its in park and whens threw 1st gear from what I can tell but it doesn't whine in Reverse from what I can tell. This is my first truck and I love it so far and Id hate for the transmission.
View 2 RepliesGMC - Sonoma :: 1998 - Brake Lights Are Not Working
The brake lights on my truck are not working all the fuses are good, the bulbs are good, I have changed the brake switch. They still do not work, altho all the other lights at the rear work even tail lights.
View 19 RepliesGMC - Sonoma :: 1992 - Won't Start When Engine Is Warm?
Car: 1992 GMC Sonoma 2.8L Manual,
Miles: ONLY 197,000 miles...
Symptom: Sometimes won't start (not even turn over) when engine is warm. It doesn't die or anything it just won't start if i've been driving for more than an hour and I say, stop to get gas or something. It doesn't make an sound, not even a click. This has only happened to me about 3 or 4 times in the last 6 months.
Fixes: I have not had a mechanic take a look at this yet. They usually complain about other things when I bring it in. Little things like "your brakes are almost gone" (big deal, I don't need breaks because it is a stick shift) or "your tires are showing their metal wire" (big deal, I've had a front tire blow out before at 70 mph... on this same truck come to think of it).
Current workaround : The following three things work to get it started every time:
1. A jump starts it right up
2. Push start starts up real easy (I've done it by my self on flat pavement
3. Wait for an hour or two (not always an option)
Feeble attempt to diagnose: My feeling is that the starter motor is beginning to go but are there other things that can cause this before I pour money into fixing the starter?
GMC - Sonoma :: 1998 - Quit Running Now Won't Start
I have heard that it is the ign switch but I have changed it twice already whats my next step??
View 15 RepliesGmc - Sonoma :: 1997 - Code P0300 / Misfiring
I got a 1997 sonoma which has a p0300 code. I changed the plugs and wires, cap and rotor and the pcv value, and it still misses. what could this be?
View 18 RepliesGmc - Sonoma :: 2003 - CEL On / P1072 And P1075 Codes
My father-in-law’s 2003 Sonoma truck has the check engine light on and I found it was driven by the P1072 / P1075 codes, indicating that both bank 1 and 2 were too rich.We have tried numerous repairs to fix the issue, including the following:
•Replaced all oxygen sensors
•Replaced a vacuum hose
•Replaced the spark plugs
•Replaced the fuel filter
•Replaced the spider injector assembly
•Cleaned the mass air flow sensor
Despite the above actions, the truck still has the same error codes. He took it to the local Chevy dealer and they could not find what was wrong.
Gmc - Sonoma :: 1998 - Hard To Start Intermittently?
The Sonoma is basically the same as a Chevy S-10. It has a 4.3L V-6, auto trans. and 148K miles.
About half the time it will crank and crank and crank before it finally starts. Other times it will start with the first cylinder to hit TDC. I have found that waiting with the key on until the security light goes out will SOMETIMES make a difference. If I don't wait for the light to go out, it always takes several attempts to start. I hope that symptom is not entirely in my mind. I don't think it will start at all if I just continue to grind on the starter. Doing it in 3-5 second bursts sometimes works, sometimes not. It does not seem to matter if it is the first start of the day, or after the engine is warmed up.
The fuel pump appears to have been replaced at some time as some idiot sawed a hole in the bed to do it rather than dropping the tank. There is no way to know how old the pump is, but I suspect they may have been fighting the same problem, and should be shot.
95 GMC Sonoma - Brake And Clutch Pedals Hard / Stiff
Just bought a 1995 GMC Sonoma. Needs some TLC but the brake and clutch pedals are unusually hard. They are still 100% operable, but they are both pretty stiff. Any trial and error ideas I should try to attempt to resolve this issue? Yes, fluids are topped off.
View 1 Replies94 Sonoma SLS V6 Will Not Restart After Stopped For Fuel Or At Some Place For A Few Minutes
I have a 94 Sonoma SLS, V6/auto that has a weird problem of not restarting after I stop for fuel or at the house for a few minutes. The engine will crank normally but acts like it isn't getting fuel. I have had the fuel pump replaced already and I just replaced the fuel pump relay. I additionally replaced the coolant sensor(long shot there) when I replaced the radiator due to a leak.
View 3 RepliesSonoma :: 1995 GMC Idling In Drive And Dies After 20 To 25 Minutes
95 GMC Sonoma SLS 2.2L 5 speed distributorless ignitionStart cold, engine purrs, runs for 20-25 min, idling in drive, then dies as if you shut it off. All fluid levels correct. Will not restart until cools off. Have replaced: coils and ignition module, fuel pump and sending unit, ignition cylinder and ignition switch, oil pressure switch. Engine light does not come on. (bulb is not burnt, comes on when starting). Have checked all grounds.
View 5 RepliesGMC - Sonoma :: 1992 - Wipers Sometimes Stop In Middle Of The Windshield
Car: 1992 GMC Sonoma 2.8L Manual
Miles: ONLY 197,000 miles
Symptom: My windshield wipers sometimes stop in middle of the windshield. Sometimes the windshield wipers keep going for three or four cycles after I've turned them off with the switch. I don't see any pattern in when they stop in the middle. The constant speeds of low and high are still low and high and they always seem to go all the way back down before coming back up. I haven't played with the intermittent speeds very much so I don't know what they're are doing.
Fixes: I have not had a mechanic take a look at this yet. They usually complain about other things when I bring it in. Little things like "your brakes are almost gone" (big deal, I don't need breaks because it is a stick shift) or "your tires are showing their metal wire" (big deal, I've had a front tire blow out before at 70 mph... on this same truck come to think of it).
Current workaround: I usually keep playing with the wipers until they end up back at the bottom by turning them on and off at different intervals.