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May 13, 2008 · They said that it was hunting for the idle speed. By that they meant that the ecm would sense to low of an idle and then when it saw to high of an rpm it would send less fuel, so it was hunting for the correct idle. once they backed the rpm down at idle it went away. My truck was worse when it was cold outside.
Apr 17, 2017 · Mine (a 2013)will initially fire up and rev high, but I am pretty sure this will diminish as the weather warms. The ECU see the engine is cold and senses the air is cool, so it prepares a high idle on start, but realizes the engine will run fine at normal idle so kicks it down after a few seconds.

Duramax idle surge when cold

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6.0 surging idle. Jump to Latest Follow. my 04 does the same thing and now has intermittent idle drop when clutch engaged and has died a couple of times.... any help out there? Recommended Communities. Chevy GMC Duramax Forums.
Put the car in gear and apply slight load, (AC on) and set the Idle as you like it. Don’t set it too high, as this will cause causes excessive clutch and brake wear. The Idle only needs to be 7 to 900 RPM with light load or AC on. Recheck timing and vacuum hook ups. Recheck mixture screw to lean best idle again.
surge. Destin, my 75 2f had a similiar problem after: carb rebuild Jim C exhaust / intake surface leveling. new gaskets, new bolts and nuts for intake. heat shield sent to Jim C when carb was rebuilt for new gasket and smoothing surface. I found no leaks in the system, idles smooth when cold and got...
surging idle I'm having the same problem with my 06' GT. It started surging to almost 3000rpm and lagging down to 400rpm. When I took it to my mechanic they said they just cleaned the throttle body, it ran fine after that until now, that was 5000 miles ago. So now at 40k miles it's doing it again only rougher this time.
On cold start my car goes into normal "fast idle" mode, about 1200rpm or so for about 30 seconds or so. Then the idle starts to hunt/surge between 400rpm-1200rpm every second or two. Sometimes it will stall. Also once this starts happening the throttle does not seem responsive at all on light application and even seems to cause a stall sometimes.
mercedessource Tech help - Diesel Purge can help you isolate the noise Internal engine noises can be very difficult to diagnose. A diesel engine can ping, cling, clang and bang, and all the time you are wondering just what is acceptable and what is not. Some knocking noises are normal and should be of no concern at all, while other deep noises can be a sure sign of impending doom. These are ...
Apr 26, 2012 · Hello everyone, I have a 2001 V70 XC that has just started doing an idle surge when I start the car but it only happens when the motor's cold. Basically the RPM's will jump to 1500 & then drop immediately to 1000. It will continue this pattern for approximately 30 seconds before settling into a normal idle. From there, the car runs fine.
Hey, I got a 95 Acura Integra LS and some reason I have a high/surging idle on cold startups. It will Idle between 1500-2500 rpm and surge until the car is warmed up then drop off and idle normally. When I plug up the IAC hole inside my throttle body a little bit the idle gets much better.
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Anoint with Death Attunement When you anoint Death Attunment on your amulet, you can refund the passive points and use them in another place. +1 to Maximum number of Spectres Minions have 8% increased Attack Speed Minions have 8% increased Cast Speed +1 to Maximum number of Raised...
Aug 28, 2015 · An idle surge can be caused by multiple phenomena. If an engine is not getting enough fuel (this is called “running lean”), due to fuel pressure (regulated by the fuel pump and regulator ...
2007 Entourage 145K miles. When I first start the engine the idle surges. When I put it in drive and excelerate the surge continues until the engine warms...
May 11, 2008 · I bought my ES 350 at the beginning of winter. Noticed that it revs fast when first started. 1500 or 1600 RPM. If put into gear I feel catapulted out of the garage. I thought that it was a cold weather trait but now that spring has arrived, Im still rocketing out of the garage.
At any temp below 45F during a cold start the truck will have idle surge. This has happened since 10k miles up to today's mileage of 40,195. It did it this morning and its right at 45F. The truck will start, both by key and by remote start, and once it settles to 850rpm it will start to surge between 850-1000.
The WW2 (Wicked Wheel 2) line of Billet Wicked Wheels have Superior Surge Protection PLUS PERFORMANCE! Greatly improves throttle response, lowers EGTs and increases boost in your 1995 - 1998 Dodge 5.9L Cummins 12V (Stock Holset Turbo).
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truck is a basically stock 2011 LML duramax, Tuned and fully deleted, 5" straight pipe and a cold air intake. outside temp was 18 degrees farenheight.

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1997 Honda Civic 1.6 surging idle up and down × Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more ... Jan 13, 2009 · surges cold idle MB Sponsored Link. Share Remove Report: Sam Anselmo. MB idle cold surges. Back to top: Mon Jan 19 2009 2:44 am Re: 1994 MB 300 idle surges when cold ...

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Oct 03, 2019 · Surging 4.6 at idle and cold. Page 1 of 2 1 2 Last. Jump to page: Results 1 to 10 of 11 Thread: Surging 4.6 at idle and cold. Thread Tools. Show Printable Version; When the engine is warm, or when the air temperature is as it is today and is in double figures (just!) it starts fine. To add to the troubles the check engine light came on yesterday and now comes on intermittently on startup. It disappears with the check radiator light as it should before I turn the key...

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Oct 13, 2009 · Back out your idle screws 1/4 turn, that will stabilize the idle and help slow-speed metering. Holley carbs run on the idle circuit up to about 2000 RPM at light throttle. Your cruise surge can be because your jetting is borderline too lean. The switch to winter formulation gas can make a borderline mix go a bit lean. Aug 03, 2011 · When I seen my idle settle in at 1000, that tells me that the enrichment table is no longer being used and the ECM has toggled over to a straight fuel map.. ***Now once the engine is warmed up,,,,if you still have surging or a racing idle, that's a whole different story.

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I have a 2007 (new body style) 2500hd duramax 6.5 coming and I heard from my mechanic of a similar issue as you are describing, only it's not only in cold weather. The truck randomly shuts down apparently and there is currently no fix so it would have to be returned. Nov 25, 2011 · Whether the 5.9 is cold or warm, sitting in park or in drive at a stop or light, the idle will surge up and down. I know this is not normal, is it just a matter of something dirty or could it be a bad part? I have NOT seen the check engine light once turn on since I bought this truck. Could it throw a code without the check engine light turning on?

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1997 Honda Civic 1.6 surging idle up and down × Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more ... When I start the car cold, the idle is a little high right from the beginning at around 1,500rpm or sometimes a little less, but not terribly high for it being cold. After running for just a few minutes it will usually start to surge up and pulse up and down in a consistent rhythm, usually between 1,000 and 2...

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Some 2014-2015 Impala (VIN 1) and Malibu models equipped with the 2.5L engine (RPO LKW) may have several driveability conditions, such as a surge, rough idle, or misfire. The engine […] October 8, 2017 — 1997 Honda Civic 1.6 surging idle up and down × Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more ... Jul 31, 2012 · My idle surge was similar to what others described here, where it would be fine after cold start, but begin to surge when the computer entered "closed loop". The surge was from around 500-1500, and would eventually stall without intervention.

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Idle problems This is meant mostly for 96+ cars. but will work for 95 also. For 89-94 the idle speed control system is a little different, but most everything else is the same. if the idle does surge up and down while at idle and with a fully warmed up engine, (drive for 20 minutes) then read on.... low idle, read on..... high idle, read on..... Nov 14, 2016 · Re: idle surge (cold), dies when put in reverse (sometimes) Depending on the nature of the malfunction, there is nothing "snake oil" about Seafoam. If the nature of the hesitation is a carbon track IAC pintle or passage, Seafoam could easily clean that up just as any number of other cleaners.

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Apr 19, 2011 · Hey guys, I have a bone stock 2004.5 duramax. Sometimes it has a really rough idle. I can only notice it when its in gear and i am at a stop. I can hear the engine "laboring" at one spot and it lunges forward at that exact spot.

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The WW2 (Wicked Wheel 2) line of Billet Wicked Wheels have Superior Surge Protection PLUS PERFORMANCE! Greatly improves throttle response, lowers EGTs and increases boost in your 1995 - 1998 Dodge 5.9L Cummins 12V (Stock Holset Turbo). anyway, on cold startup, the car surges from about 1500rpms to prob about 1000 and lower, sometimes 500, and then back up. Any suggestions? It will prob get fixed when I get dyno tuned, but I would like to hear from you guys anyway. I should probably log it on cold startup and post up, right?