My 2009 with the 3.3 motor will rev up when cold drop to a low idle then surge up again. It will do this until it is warm even when in drive. It never did this before only in the winter it would start at fast idle for a minute then drop to normal idle. There are no codes or lights, what would cause this?
View 6 RepliesI have a 2008 Hyundai Santa Fe. Has about 65k miles on it and has regular maintenance and tune ups when needed. It is cared for. The last tune up was about 2k miles ago. Spark plug change, oil change, filters, etc.
I have noticed lately that when the car is moving at idle speeds, it will surge about 200 rpms. It does not happen when the breaks are on or stopped or in park, or moving at higher speeds. It only does it while moving and with no acceleration. It happens in Drive and Reverse.
I live in the city of Lima Peru so a 4x4 is useful but it also requires some tight parking but when it starts to surge, it is a huge pain.
Recently I have noticed that when on a tune other than stock I am getting a surge at idle - my RPMs drop to around 621-630 then shoot back up to 660-675. On my stock tune my RPMs stay around 640-667 and don't cause the surge (felt as a shimmy so to speak). Is there anything else that causes a similar symptom? I attribute it to tuning due to it only happening when running anything but stock but could be wrong.
View 2 RepliesI have a 2007 SF 2.7L V6 with 55000km.
Recently we have noticed that from a cold start the engine idles roughly few a short time and especially bad if put into gear only moments after starting.
Do we need to let it warm up for longer?
I have had the Santa Fe back and forth to the garage no power. We where driving it and all a sudden dropped power can't rev motor over 3000 rpm. Garage said they fixed it with dry gas and more gasoline b/c it was "low" between 1/4 and empty?
View 12 RepliesI have a 2003 silverado with a 4.8 engine. i bought the truck in the summer of 2010. no problems in the winter of 2010. ran great all year in 2011, then my block heater shorted out in the winter of 2011, so i wasn't able to plug the truck in.
We get some cold nights up her in alberta, but anything below -10c the truck would idle surge and stall, would do this about 4 times in a row then it would just surge a few times but stay running.
I had a buddy that's a gm drive ability tech take the truck and do a tone of updates for the throttle body and to correct idle surge and some other drive ability related stuff. i cleaned the maf, map and tps as well as the throttle plates. replaced plugs, wires, air filter and fuel filter. all this and it was still doing it, but it had to be really cold to stall.
wasn't able to replace the block heater till this summer. but now that its getting colder and dropping below -10c at night the truck is starting to idle surge when i start it up in the morning.
I have 2009 Sante Fe limited and had experienced a loud pop / power surge while waiting in the car. This pop / surge was a split second where a saw the dash lights and my iPod turn off and on.
Is this something that I should be concerned about? This is the second time that this has happened in the 5 years that I have owned this car. First time happened when I was driving home a couple of years ago.
I'm having issues with my Sante Fe. 6cyl model, 130k-ish miles.
The door lock issue is ongoing and hasn't been more than an inconvenience. When you try and use the power locks, often it doesn't completely lock the front doors. Other times they don't move at all. Sometimes they work fine. It is kind of a crap shoot. So...that is number one. Thought I would add it in while
This week it has developed an RPM surge usually between 2k and 3k rpms. It has happened with the air on and the air off. I tried being gentler on the pedal and that seemed to make it less frequent but I was also driving REALLY slow.
I put the car in manual (auto-stick or whatever it is called) and while it waited until nearly red-line to shift, it did not seem to have the issue. I am pretty sure the car is actually shifting gears which is causing the surge. What is causing it and there are no other issues.
The title pretty much explains it. Coming home today started hearing a squeal/whistle while at highway speed - almost sounds like the brake wear indicator tabs that GM is so fond of. Thought it might be the brakes, but it didn't stop with brake application and continued after coming to a full stop. Also, surging at idle, which seems to be reduced when the A/C compressor is on. The squeal happens both with and without A/C.
View 1 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 a 2001 santafe with a 4 cyl The code 102 was up so I replaced the mass air flow censer . I go on a test drive and the light stays off , but when I go to re start it again the light come on and stays on, with the same code. The only strange thing is the idle will raise for a min then drop down to almost a stall.
View 2 RepliesFor a few months now I've been having strange electric issues with my 2009 Santa Fe GL.
At first, we had the cruise light randomly come on (not actually engaging cruise, just indicating the system is on), the ESC light would be on, and the tachometer would drop to 0 while driving, although the engine was clearly running. We had the cruise control switch replaced and that appeared to have fixed the ESC and tachometer issue.
Unfortunately, the cruise light would still come on so the brake switch was replaced a few weeks back - that did not fix the cruise light issue. Now, over the weekend two very disturbing things started happening:
1) Cruise will now randomly turn off when engaged
2) The car thinks it's in manual transmission mode, even when it's not. When in drive (D), the car will no longer switch out of first gear. In order to switch gears, I must switch to manual drive mode and change gears by using (+).
I've noticed that on cold starts after work, or in the mornings in start up my Santa fe's really rough at idle.. I'd like to say even slight hesitation when I take off.. I notice a drop in RPM and lately harder shifts out of first..
My sf is the 3.5 AWD w/ nav it's a month old with 2900 Kms on it..
A few months ago my teg started idling a bit funny. Its got a chipped ECU and has always idled very low (500 - 750 rpm) once warm.
In the past few months however the revs have started fluctuation or surging. Basically once the engine is warm the revs drop right down to nearly 200 - 250 (the needle actually drops off so its hard to tell ), then the engine bounces back up to around 500 rpm. It then does this non-stop if I leave the throttle alone.
Ive found that resting on the throttle tends to solve the problem as I'm forcing the system to run constantly, however when letting off the throttle (or dropping out of gear), she drops right down gets really ragged then bounces back up to ~500. The drop and surge cycle takes roughly 2 seconds.
Ive taken it to an auto electrician who sat on it for 2 weeks and eventually shrugged his shoulders. I've heard that one factor could be the O2 sensor, however another camp has said ECU and yet another said throttle sensor.
Details of the car are:
94 Honda Integra (GS-R model)
B18C (Gen 1) motor - Enlarged throttle body, Gizmo chipped ECU, better breathing with a pod etc.
I have a 2001 Mazda Tribute with 150,000 miles that is meticulously maintained. This past winter (as far as winter goes in San Diego) the engine would run rough and the rpm's would drop close to stalling when stopping at a light for the first 2 or 3 miles. After that the engine has warmed and there is no problem. Could this be the intake gaskets needing replacement. This only happens on a cool or damp, rainly morning.
View 6 RepliesI have a 2010 Santa Fa GLS. 88K miles. This issue started in the last 6 months, once the engine turns over the RPM drop low and starts to putter as if it is not getting enough fuel. If push down the gas when starting it works. Once it passes the first 2 -3 seconds everything is fine. No issue idling or driving. What this could be? It's not an issue with Starter, Battery, my best guess would be a sensor, leaky fuel injector.
View 1 RepliesI have been noticing that the idle in my car while stopped at a light will sometimes drop to 500 rpm. This makes the car feel shaky at idle. As soon as I put it into neutral or reverse the rpm jump to 750 rpm. Intermittent issue, what this could be??? Its probably happened 3-4 times in the last 6 weeks. Its annoying.
View 14 RepliesOn my 2010 Golf with 2.5, when I first start car above 40 degrees it goes into high idle for a few seconds which is normal. However, below 40 degrees it goes into low idle on cold motor. I brought this to 2 different dealers and they checked computer and fin no fault codes. How can I get this fixed?
View 11 RepliesI have a 2007 gs 350 awd with about 98k miles. I recently started noticing this strange vibration whenever i stop at a red light. I would describe the vibration as a shiver of some type where the RPM kinda drops. After the vibration, I started noticing my car using a lot of force on the freeway and giving me very low mileage. I did some research and changed the motor mounts, and cleaned the throttle. This slightly fixed the vibration but cleaning the throttle fixed the low mileage/using extra force when driving at high speeds. but the vibration still seems to be a problem. Also, does the exhaust possibly have any role in the vibrations?
View 4 RepliesMy 07 LS460L has a pulsating idle. Approximately 2-300 rpm from 1200 rpm. It has, while in Drive dropped to 4-500 rpm then will recover. Also it has dropped so low that I thought it was going to stall but then it jumped to 1500 rpm fluctuated then recovered. I had it in at Sewell 2 weeks ago and they couldn't find the reason until a week later they said the throttle body was dirty. The tech cleaned it and I still have the same issue. No performance issues just idle? I have two LS430' 01&06 and neither one of them have this issue. The fuel rails were replaced under recall.
View 1 RepliesThe past few days ive been having some boost problems. Boost will surge to 15psi then drop to 0psi and continues on acceleration. Coming from work today I was unable to get past 5psi accelerating
Then on WOT the boost would spike to 23psi then down to zero. Checked all hoses i could see and reach to make sure they were connected.
Mods:
Forge 007 DV
ECS Race N75 Valve
Turboback Exhaust
Chipped
Short Ram Intake