Bought my 2006, V6, about 2 months ago. This morning was the first really cold once since I bought the care. When I started it today, the idle speed was about 1200 RPM. It took a few minutes to warm up and then the idle speed dropped to normal. Quick question. Is this normal?
View 1 RepliesI posted a related video in the fuel pump thread here where the high whine noise is apparent several seconds after a cold start. Now from inside the cabin, looking at the revs, the "sewing-machine-like" whine disappears above 1200 rpm.
High-pitch noise below 1200 rpm - YouTube
Recently, our 2009 Sonata jumps to relatively high and not normal RPM when start cold (and I don't mean winter-cold; I mean first start in the morning). It jumps to around 2500 rpm for 3-4 seconds before it goes down to the normal 1200-1300 or so for a cold start.
Also, not sure if this is the normal Sonata engine sound, but when we push the accelerator it sounds like the engine is knocking, almost like a whistle of fuel flowing.
I have a 1.8t jetta that has a weird idle issue when starting and engine is cold it like to idle at 1200 rpm then will eventually work its way down to 800 rpm
I have no cel codes and have looked for vacuum leaks (but may have missed one) ,but if i start the car and it idles at 1200 rpm then i shut it down and start it right after it will idle at 800 rpm as normal.
Its a 1.8t unitronic stage 1 stock everything except e type coils with plugs at .032, Also does not have much pull after 4000 rpm, not to worried but just may be part of the issue....
I have a 1999 Ford F550 with a 6.8L V10 and a 4R100 Auto.
I want to run an underhood hydraulic pump, like what a wrecker uses only I want to use it to run a generator under the truck.
How can I get a 6.8 to idle up to 1200 or so? I searched the Body builders guide and it looks as if the idle up is for the 7.3 only.
My truck also is not a 2005 and up like the other posters, who can take advantage of a drive by wire.
Also I doubt my transmission has a PTO cover so I think a generator option using that route is a dead end. What are my options to idle the truck up to 1200?
Unless you manually hold throttle when cold jeep will stall. Once engine is warm all is fine. So what controls the high idle?
View 2 RepliesSince having my engine replaced with a newer used engine block my idle speed when I first start it up or when it is cold is around 2000rpm which lasts for about 2-3 minutes until it begins to fall to the normal range of 1200-1400 and finally to 850 or 900rpm when warm. how can I fix this or is it okay to idle at 2000rpm for a couple of minutes? is it hurting anything?
View 3 RepliesI picked up my latest R back in April - 3 owner, 33K mile car - as far as I know no tune. The previous owner owned the car for the previous 9 years and kept it stock.
The issue: If the car sits for more than one day (I work form home so this happens a lot) upon initial start up it will start and idle at 800 RPM and then drop a little from there once warmed up. Now if the car sits for less than a day, it will cold start as it should - high idle then a gradual drop.
I have 114,00 miles on my car. Plugs changed and decarbonization done at 99,000 as well as ECM reprogram or update ($99). Anyway, when my car sits overnight and starts it is getting a rough high idle until I feather the pedal or give it a minute or 2 and it is fine. It is warm now in the 70's and this just started. I had it to the dealer for oil change and they looked at it. There are no codes, they recommended changing the plugs and doing a decarb again. So I told them if I need plugs there is something wrong, Iridium OEM were installed.
Anyway, they suggested changing the throttle body since it has new sensors. I have have the TPS replaced before when engine was surging. They told me there are 2 sensors and one could be bad in throttle body. I don't get it, I use Hyundai air filter now and change every 15,000 miles and get oil changes regularly and they use Quaker State Synthetic blend. I am wondering if maybe I have a faulty PCV? I don't think that has been changed. Don't even know what the interval is. Previously I was told there was none, but I disagree.
What would cause me to get carbon build up like they keep telling me? I don't want trial and error and throw parts and money at it since there are no codes. I was going to drive it til it throws a code. I do highway driving in suburban area, mostly 65 mph. The car runs good, still the intermittent hard downshift when slowing down but nothing like before the tranny was replaced.
1993 Geo Prizm, manual transmission: Intermittent failure to start over a two year period, gradually becoming more frequent. The engine turns over every time the key is turned to start the engine, i.e. the starter motor/battery/battery connections work flawlessly. Once started the engine runs flawlessly without misses or shut downs. The only possible problem may be the engine idle speed that seems at times to be too high even after the engine is warmed up. Without predictability, the engine may fail to start when the key is turned.
Remember the engine still turns over normally. It just does not fire up. Two options exist for my predicament. That which is resorted to the most because of the speed of recovery: step out of the vehicle and push start the car by popping the clutch. The other alternative which I have been forced to utilize before because of the physical impossibility of push starting (i.e. if I had been able to push, I would have popped the clutch to start) at the time has been to wait for a protracted period and re-attempt to key start the car. This has been successful a couple of times.
101,400 miles on car. Started noticing about 2 weeks ago, at idle, and as pickup up speed, a whining noise coming from the engine bay. It has gotten a little worse, so I started trouble shooting.
Basically, at idle, its somewhat annoying, but as you hit 20-30mph it can be more annoying if the radio is off or at low level. If Im sitting there in park, and its whining away, all it takes is me cutting the A/C knob to OFF, and then quiet as a mouse.
So, other than the compressor going bad, I can't see anything else related? I always hate when AC problems show up, they are never cheap....
My idle seems to always be somewhat rough whenever I put the heat on in cold weather. While in drive I'll come to a red light, heat will be on and I'll stop. The. my idle will bounce down then back up. I shut heat off to test and it only does it while heats on.
View 5 RepliesThe other day I disconnected battery, then removed and cleaned the throttle body. Now cold-start idle is high, and erratic,
goes to 1,600, drops to 1,000
- back to 1600, drops, up to 1,400
-- wavers there, and then finally,
starts to taper down to steady idle of about 650-700 rpm.
Since battery disconnected, does not seem there would be a chance for TB to "un-synch" with cars computer.
It started snowing going down to 10-15 degrees during school hours. and whenever i go to turn my car on it starts but immediately the RPMs rise to about 1300 and then immediately drops to about 300 then immediately back up to 1200 but stays steady until it warms up then drops to normal about 700. i understand the cold start when it idles high until it warms up but why does it drop then come back up?
View 3 RepliesMy 06 Sonata runs very rough at start up when the car is cold. It appears that it is missing on several cylinders. This last for about 15 seconds and then the car runs fine. What could be causing this problem? No check engine light.
View 10 RepliesCarburetor: Autolite 4100
Fast Idle Speed: 1250 RPM
Curb Idle Speed: 600 RPM (At normal operating temperature)
When I cold start my truck, the fast idle speed holds the throttle at 1500 RPM. I will let it idle about 30 seconds or so, and then I will tap the gas to bring the idle down.
When I do this, the idle will immediately drop all the way down, and too low for a cold engine. The engine won't stall, but it will hover just below 500 RPM, which is a bit too low to idle smoothly.
But when the engine is at operating temperature, the idle speed is 600 RPM and the engine will happily idle smoothly.
Shouldn't there be an "in between" speed? When I tap the gas pedal at 1500 RPM to bring the idle down some, shouldn't the speed drop down a little lower, like 1000 RPM since the engine is still a bit cold?
If so, what do I need to adjust? The Autolite 4100 works PERFECTLY otherwise.
Could not find anything about this on a search. I have 2 Sonatas. An 08 and an 09 both are 4cylinders. The 09 was purchased used in June of this year. With the colder weather setting in I have noticed that the 09 when started from cold jumps to 2500 rpm and settles to around 1000rpm for a short time then slows down a bit more to what I think is the normal idle speed. My 08 never goes that high and settles down to a normal idle quicker. If I read correctly the 08 and 09 have different air metering systems. Is this idle thing normal or am I dealing with an issue?
View 7 Replies2005(its NF model) Sonata 2.4 petrol manual. 75000 miles. On cold start makes knocking sound( sound like Diesel). After coupe of minutes when warms up the knocking sound gone.
Also when i start driving( still on cold engine) i hear that sound only when i let go from gas pedal and only in range of 1800-1500 rpm. When i accelerate i don't hear that knocking sound.
I think is not belt tensioner because sound is much longer than couple of sec.
The last couple of times I've started the car from a cold start the RPM's fluctuate up and down for about 30 seconds and then it stops.
View 8 RepliesCamry 06 4cyl with 100k automatic. I have replaced spark plugs, cleaned the MAF with Maf cleaner, Changed air filter, changed cabin air filter, transmission flush, engine oil to synthetic 5w30, used seafoam in the fuel tank and the intake per sticky.
We have owned the car for 3 weeks now. We live in Orlando, FL so the lowest temp we get in the mornings is 57 some days during winter times. The car never idled high at 2000 rpms since we owned it. I never had a car that idles that high on cold start up but my other vehicles idle at 1200 rpms on cold start up.
It idles at 2k for like 3 mins and then drops back to 800 rpm which is seems like normal operation of cold start up. I have read mixed reviews about been normal or not. Most of this reviews are in really cold temps not like the ones here in FL.
So does this appear to be normal? My wife called me today telling me the car did this. She said it was that cold this morning. I haven't got a chance to read the manual and see if there is a note there since she is at work.
I just need to know if it is normal even in hotter temps like FL. The car drives fine and no check engine light. Stock engine as far as we know.
I have a 2010 Elantra and noticed after I start it when it's cold the rpm is about 1800rpm but doesn't drop. I never really payed attention on this car but my other cars would drop after a minute or so. Is this normal on the elantra or is something wrong?
View 7 Replies