Last post on Dec 05, 2013 at 8:40 PM
You are in the Chevrolet Silverado & GMC Sierra
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Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, GMC Sierra 2500, Chevrolet Silverado 3500, GMC Sierra 3500, Truck
#298 of 403 01" Chevy Silverado 1500 W/ Misfire Codes
Mar 30, 2010 (1:02 pm)
I have a 2001 Chevy Silverado 1500 5.3l 4x4. I am have issues with the engine missfiring. The computer is telling me that I have cylinders 5, 7, & 8 misfiring. I also have fuel coming out of the exaust. Today I have replace all of the plugs. I still had the same cylinders misfire. Then I switched cylinder 1's wire with cylinder 8's wire and still the same missfire codes. Then I swapped coils with 3 & 5, but still we have misfires on 5, 7, & 8. I then checked power to coil #5 at the power harness and we have 14.6v. Do you have any suggestions from here?
#299 of 403 Re: 01" Chevy Silverado 1500 W/ Misfire Codes [socalpools]
Mar 30, 2010 (3:01 pm)
check the engine temperature sensor! If it's failing it's telling the throttle positioning sensor that the motor is cold so it keep's dumping a lot of fuel. So when the gas is pushed it will flood and it will die! Just something to check ! Good Luck.
#301 of 403 02 silverado hard to start
Mar 31, 2010 (6:28 pm)
i have this 6.0 vrotec v8 engine and every time i try to start the engine it wont unless u pump the gas a couple of time im thinking it may be the fuel pump not really sure and advice?
#302 of 403 2500 6.0 idle problems
Apr 06, 2010 (3:30 pm)
Hello, asking for some advice, in the past 2 weeks exhaust started to smell heavy of gas and then in past 2 days when idling, motor feels like its missing. Took it by my mechanic and he said # 8 injector may be clogged. Now I notice that as I accelerate my oil pressure gauge raises up to about 50-55. As i slow down or come to a stop oil pressure gauge drops back to 40. Could this the start of computer-electrical problems ?
#303 of 403 Re: 2500 6.0 idle problems [ms1378]
Apr 06, 2010 (4:08 pm)
What was the oil pressure readings before?
#304 of 403 Re: 2500 6.0 idle problems [obyone]
Apr 06, 2010 (4:45 pm)
The oil pressure sat around 40 to 42..and I've never seen the gauge fluctuate before. I mentioned that as I accelerate it rises...at 3000 rpm its it climbs to 60 64 then as the rpms drop so does the gauge
#305 of 403 Re: 2500 6.0 idle problems [ms1378]
Apr 06, 2010 (7:37 pm)
You never told me what type of automobile you have ! One thing to look at , the
heat sensor is telling the motor it's still cold and needs to inject more fuel !
This happens with silverado's sometimes ! Just something to look at ! Good Luck !
#306 of 403 Re: 2500 6.0 idle problems [1998lincoln]
Apr 07, 2010 (5:33 am)
Thanks for replying, will take a look at that..bythe way I own a 2001 2500 6.0 vortec..gas sucking beast that it is, got it when gas was not so much of concern, but it still pulls any trailer that i hook to it w/ out problems.
#307 of 403 Re: 2500 6.0 idle problems [ms1378]
Apr 07, 2010 (2:23 pm)
I'd be more concerned if the oil pressure didn't move in relation to rpms. What you describe as occurring would be the correct operation of the gauge.