Chevy silverado missing at idle 3 i have drove has had a little shake at idle that feels like a misfire but i think that he is referring to watching a live data stream and seeing the actual misfires shown on a scanner. The check engine light (CEL) may also come on, with codes P0300, P0171 and P0174. Anyone experiencing My 2013 Silverado with the 5. The most puzzling part for me is how much worse it got in reverse and no codes. Swapped plugs today and #3 immediately started missing. Bad spark plug wires. Jun 21, 2010 · i have a 2008 Silverado Crew Cab w/ 5. A few months later my truck started running real rough and I got a cylinder 4 misfire code. I took it in to the shop for rough idle. Oct 27, 2020 · I have a 2014 Silverado 5. I've read most threads on the subject (much appreciation!), and will try some more solutions today. Apr 7, 2018 · Update: This issue has been resolved, and confirmed 100% the cause of my idle misfire was the ignition timing setting "in-gear". 3L and auto transmission. If you switched coils plugs and injectors, and still got mis-fires on the same cylinders, then the problem lies before the coils, what i mean by this is the problem could be a bad connection between the ECU and coil or injector. Replaced plug and now it is back to normal. Nov 26, 2017 · I have a really bad miss at idle, complete with a CEL light and rotten egg smell. If I keep a light throttle in neutral the miss will get worse until it barely keeps going. 8L, 5. Around 130,000 miles I replaced all the plugs and wires. At times it was well over 1000+ misfires. 5 and 2" NBS Block, 305/65-17 BFG A/Ts, Ranch Hand Summit Bullnose Apr 5, 2022 · Lazytek asked if the missing occurs under load. ive noticed now that i can "feel" the truck idle now, kinda like a slight shake every second or 2, and it happens in either park or drive. Apr 27, 2010 · 2005 Chevy Silverado Z71 Crew Cab 6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. When I start it up the RPM and idle seem fine. Go get a noid light and make sure each injector harness is pulsing. Oct 20, 2023 · This recent issue actually started with a rough idle and a P0307 (misfire on cylinder 7). I have done several things so far and the misfire while towing is gone but I still have rough idle after it warms up and kind of sputters/hesitates at around 1500 rpms. Once the truck is above 1300rpm or so, it doesn't misfire at all. If a noise is present, it will not be eliminated by cancelling fuel injectors and generally, the static compression and cylinder leakage will be similar on all cylinders. The fuel system begins with the gas tank, then the fuel pump sends it through the fuel lines, and finally it gets to the fuel filter. 0L engines is common, and getting harder to diagnose. I also check my oil pressure hot at idle and it good. Apr 29, 2022 · They are after the O2 sensors that read fueling so them being missing would not have an affect. As, GM V8 engines are prone to a rough idle, and engine misfire when cold. 0 - 170k Fairly Recent Fuel Pump, Spark Plugs, Oil Change, Cleaned TB and MAF sensor I just pulled exhaust manifolds and replaced the gaskets. Dec 28, 2024 · Miss didn't change. Dec 28, 2011 · I've got a 2007 Silverado 2500HD 6. 86MonteCarloSS. When I accelerate or rev the engine for about 5-10 seconds, the CEL and miss go away. Only at an idle/low Jun 26, 2015 · If the result of Step 2 still doesn't fix the rough idling, move on to Step 3. Aug 18, 2012 · The usual suspects (that cause a misfire, rough engine idle, engine miss, 'dead' cylinder, etc. So I cleared the code, swapped ignition coil 7 with coil 1, and then got the P0300, and have had just the P0300 since (2-3 weeks now?). In some cases misfires tend to show best at idle as this is a relatively stressful operation for ignition systems. 3 L Missing and Rough Idle Intermittently I have changed Spark Plugs,Wires ,Coil Packs, and removed Fuel Injectors - Chevrolet 1999 Silverado 1500 question Search Fixya Press enter to search. 73; '03 Sierra 1500HD Quadrasteer w/ 4. This didn't fix the problem and it continued to idle high. 10 & Traction Ctrl (1 of 237 made) Did you get an issue resolved, your GMT back on the road, or save by using this site? Aug 21, 2019 · It will start normally and idle fine (with a barely noticeable misfire). Jun 12, 2018 · Ie move the coil, the plug wire, and plug to duplicate the failure on another cylinder. No trouble codes and the rough idle only lasted a few seconds. Also, when the engine is warm, it is hard-starting. Rancho skid-plate. idle only or only at high RPM. IT DOES. As soon as I put it into Apr 10, 2010 · the IAC is the idle air control sensor. After that take out an injector while the truck is running and make sure it is spraying. 3 w/ 3. Cannot seem to find any relation between whether ambient Mar 21, 2012 · I have a 2004 GMC Sierra with the 4. 3L AFM, Z-71 SOLD CCM 2. i pulled out 1 plug on each bank (they are Rough Engine Idle and Misfires When Cold on GM 4. It also misses right on start-up, while idling and you can feel the miss at all rpms. Aug 30, 2019 · If you own a Chevy Silverado and it's idling rough, you may be feeling frustrated. The good news is that all of the components that make up the ignition system can be tested, and at the end of the article I'll show you where to find the 'How To' test articles. Oct 24, 2024 · Q: What is the most common cause of a rough idle in a Chevy Silverado? A: The most common causes of a rough idle in a Chevy Silverado are dirty or faulty spark plugs, faulty ignition coils, and dirty or clogged fuel injectors. May 21, 2011 · Hi, I have an 2001 silverado 1500hd with a 6. Use a wooden hammer handle to apply Apr 15, 2019 · 2008 Silverado 1500 5. At idle for some reason factory uses 18* in gear. Hopefully you all can help me out. After cleaning the system, we drove the vehicle under the same conditions we experienced the misfire, and we did not feel a miss. Start out with the IAC (idle air control valve Jun 8, 2022 · I have a 1994 Chevy C1500, 5. Jun 2, 2012 · 2500hd 6. What an Engine Needs to Jun 22, 2023 · Short version: 2018 silverado 2500 6. Jul 11, 2010 · 1998 Chevrolet Z-71 1500 HD, 14 bolt with 4:10s, 285/70-17 on NNBS wheels, no crank 2008 Chevrolet 1500, 5. I now have a bad misfire. We have scan readings that showed an issue, carbon on the spark plugs, and a drive test where we experienced the problem. As I let it sit for a couple of seconds the RPM's slowly begin to drop until they finally bottom out at about 1K. 3 with 105,000 miles. The following suggestions may help determine if a worn cam lobe and/or lifter is causing this concern: 1. The miss only occurs during idle. coils, catalytic converters, spark plugs. As a matter of fact, it started missing while pulling a hill at 50 mph under load. 0 76k miles. 0 Vortec with a PO300 random misfire/rough idle issue. 0 intermittently misfiring on bank 1. when driving the truck it runs great as it ever has with no feeling of any misfires. another thing for the OP to try is to change the fuel filter i know my 1996 s10 blazer would start running rough and misfiring when the fuel filter needed changed. When the idle is really rough, the power seems to fade in and out a bit. Bad distributor cap. It could be dirty. I determined the issue to be a vacuum leak, so I replaced my vacuum hoses and checked connections. 17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires 4. ) are: Bad spark plugs. If the problem is left Nov 21, 2009 · Hey guys, Here is one I hope you guys can help me with. I just went through this with my truck and I would occasionally stumble at idle and miss under boost. it is mounted on the throttle body housing. 8 and 5. 3L V8 4WD - 161,000+ miles. Changed 02 sensors, plugs. The rest was normal operation. In this article, we'll look at some of the most common causes of a rough idle in the Silverado and how to fix the problem. Q: Can a rough idle damage my engine? A: Yes, a rough idle can damage your engine over time. It runs a lot better but that rough idle and sputter is really annoying. 3L, 6. 0L Vortec i have a cold air intake on it and im running a superchip program the other day i started my truck and it had a rough idle but is fine when you give it gas i just replaced all the plugs and wires the plugs are gapped correctly and i checked all the injectors and coil packs and they aren't Oct 11, 2010 · 1992 Chevrolet Silverado 1500 4x4 1994 Chevrolet S10 LS 4x4 1986 Chevrolet Monte Carlo SS www. it could be a ground not hooked up, or like someone said one of the pins in the May 23, 2018 · Need help ,changed plugs and wires, intake gasket vacumn lines , pulled compression on all cylinders ( 125 to 138) random miss on cylinder 6 at idle than runs fine above 2000 rpm. It started misfiring while pulling my camper. As soon as I bought it, I felt a slight cutting out and I installed new platinum (oem) spark plugs and quality Jun 18, 2011 · well every 4. 3 ltr V8. My 1997 Chevy Suburban (5. 3L V8 developed the same rough idle on start-up so many others have reported. 7L engine. After warming, the engine starts missing significantly when I give it a little throttle (neutral or in gear). Step 3 – Check the fuel filter. My truck idled high and struggled to accelerate so I finally got around to replacing the idle air control valve. Thought maybe the plug and/or wire was bad or damaged so I replaced the plug and wire for that Dec 4, 2017 · '03 Envoy XL 5. May 5, 2009 · 5. They claim no codes came up therefore no issue. 39,000 miles. It behaves pretty well until it starts to warm up. Holes 1/3/5/7. (Odometer reads ERROR) I have had the pickup for 6 months now. First - 2003 GMC 2500hd 6. It is all stock with approximately 118,000 miles on it. 150k miles on the truck. 10 PercisionGears w/factory locker, T/A Performance rear-end cover Jan 29, 2013 · Hey Guys - Just found this forum. When I finally found the table for idle in gear I realized how obvious it was. The most common cause of a rough idle is misfiring. 7) is acting up on me. Any advice is appreciated! Thanks! Dec 14, 2018 · Since this was an intermittent issue we wanted to make sure the vehicle was completely repaired. net. vmel fleexg opkwc mqc sthmm emva mqlc tuq phyl csr mwtjzwc kfpkpw huse krwfky boy