Cadillac - Cts :: 2007 3.6L - Rough Idle And Reluctant Start
Apr 29, 2013
I've got a 2007 Cadillac CTS with the 3.6L engine. The car has begun idling rough when stopped at lights, parked, etc. A few days later, it also began starting reluctantly. The rough idle varies in intensity, but is almost always present. The CEL is not illuminated and the car seems to run fine when not idling.
A few months ago, the car began running like a lawn mower and the check engine light came on. It turned out to be a misfiring cylinder. I had all the plugs replaced along with the ignition coil for that cylinder.
The car ran great for a few months after the repair, but now this rough idle problem has appeared.
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I drive a 2011 Limited. Three out of the past four mornings the car has been reluctant to start. It is cold out, but not super cold. This morning it was 1C (34F).
When I turn the key, it cranks but does not fire. I Held the key for what felt like forever, but in reality it was probably only 6 seconds. I let go of the key, waited a few moments and then tried again. After the third try, it finally fired and ran normally. It didn't stutter or otherwise seem to have any problems.
At this point I went inside and found my basic scan tool. No codes were stored and the voltage was between 13.5v and 14.6v. After I drove to work, I turned it off. The voltage dropped to 12.1v. When I cranked it again at work, I saw the voltage drop to 9.5v for a second before it fired up and jumped to 13.5v, then 14.6v.
The car has the original battery. Could it be as simple as a battery? Oh, I Just remembered, when the car did start, the radio was off. Upon turning it on, it was reset to defaults. Other than this starting issue that has only recently started, pun intended, and the radio I am having no other issues with the car.
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My 2007 TrailBlazer with 84K stumbles for 25 seconds when I start up cold. After 25 seconds I hear a click and then it runs perfect. No engine codes present. Have new plugs, new O2 sensor, new thermostat.
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My 07 F-150 5.4 has a rough idle during a cold start for about 1 minute. It happens mostly when the weather is chilly or cold. Also after the first start it doesn't do it the rest of the day. Of coarse they can't find anything wrong and tell me there are no updates for anything like that.
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1997 lexus ls400 204500 miles, engine light is on code P0340 (cam shaft position sensor bank 1), rough idle at start, once the car warms up it runs ok but loss of power, hesitates, if press more on gas pedal the car jerks. I have replaced both cam shaft position sensors and engine coolant temp sensor but no improvement. What could be the problem?
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I have a 1992 Cadillac DeVille with 25,000 miles on it. It’s never been driven in the winter and garaged when not being driven.Last year, it was running rough, so I took it to the dealer. They changed the spark plugs and wires. There seemed to be some improvement after that. After about 500 miles, it started to rn rough again. I returned to the dealer who changed the spark plugs again and replaced two of the fuel injectors. Still no improvement. A few hundred miles later, I took it to a local mechanic. He replaced four more fuel injectors and there seemed to be some improvement.After another few hundred miles, the engine started to run rough again, the fuel dropped down from about 20 mpg to 10 mpg, and it stalls at traffic stops or if the brake is applied. After 30 minutes of idling it will use 5 gallons of gas. There are no strange odors or visible leakage.
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I have a 2005 Nissan Sentra with 74,000 miles on it, and it has had trouble starting for 2 or 3 years. When it started, I would turn the key and the car would almost, but not quite, start, and simply turning it off and trying again would work immediately. I had the battery replaced and the spark plugs at ~50,000 miles to no avail. About a month ago, I started my car and it had a really rough idle for about 15 - 30 seconds and the check engine light came on (registered an emission issue), but it ran fine. I had to get a routine oil change and emissions test anyway and they checked the spark plugs as a first measure. They all had some wear, but one was almost worn down to nothing, which the mechanic said was a result of the spark plugs (autolites?) so they replaced them with the Nissan recommended NGK kind. The next day my car didn't start the first immediately, but on second try worked. A week later I noticed my car sometimes rumbling on idle right after start again, so they replaced the fuel filter and the fuel pump. Didn't work, I still have a rumble about 30% of the time when I start, and just two days ago the check engine light came back on (I haven't had time to get it diagnosed yet). Without knowing much about cars, it feels like the engine isn't getting enough fuel or something. Could it be dirty/clogged fuel injectors? Should I be worried that my spark plugs were worn down after just 25,000 miles?
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I made a post earlier about rough vibrations at idle on my 07 camry le not too long ago. I cleaned my throttle body and it worked, but now they are back and worse then ever. Now the vibrations go in and out, like it vibrates for a second the stops for a second then starts vibrating again until I move and stop at the next light and then the in and out vibrations are back. Also sometimes I hear metal hitting sounds.
Just had an oil change and oil changes are always on time so I doubt it's the engine knocking. Also when the AC is on the vibrations just become very unbearable. Finally sometimes when I turn the steering wheel while barely moving or not moving at all the vibrations get as bad as when the AC is on and very noisy. Also I noticed turning the steering wheel raises the rpms but then drop back. I tried to record the sounds, but as usual video of sounds are useless.
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I 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?
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My car is idling rough and the Service Engine light blinks on/off continuously. I ran the codes and they are P0301, P0401 and P1258. What this could be? I changed the plugs, wires and ignition coils about a year ago. Catalytic converter was replaced around the same time but the O2 sensors hasn't been changed. Could that be the cause?
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2007 Camry LE. This morning while driving, she noticed a shuddering that scared her. She called me and parked the car as soon as she could. I went to drive it around and, as she had said, it was shuddering.
I drove it for a bit, neighborhood and highways, and took note of everything. The RPMs were low - About 500. I'm not sure where it usually idles, I rarely drive this car, but my Jetta idles around 900 so this seems strange to me. RPM gauge occasionally bounces around at idle. Once the car gets moving there are no issues. Only at complete stop. It feels like the car is about to stall.
I drive a manual and if I keep it in gear while approaching a stop it makes the same shuddering because the RPMs are too low for the selected gear. This is what it reminds me of.
Here is a video of what's going on under the hood. As you can see, the airbox is vibrating heavily. That's the most obvious place. The engine and intake manifold are also bouncing around, but it's hard to see in the iPhone video.
Video ... ... ...
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My 07 camry's battery died last week and I got it jumped, drove about a mile and while at idle it felt as if the alternator was not charging the battery and It was slowly dying. Took it to Tires Plus, they said the computer forgot how to idle, so it was misfiring and threatening to shut down at every idle. 80 dollars later...it was fixed, for a week.
This morning, my battery was dead again, again from leaving a power connection unscrewed that came from my fog lights attached to the battery in the car after cleaning it on sunday, called AAA. He said that I have to get a screw to screw it back in or it will die once I turn off the engine again.
I work at a construction plant so we have quite a few nuts and washers laying around. Well it had a rough idle again, on the way to work, lights would be bright then dim again and vibrating the car, like it's struggling to keep the power.
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I have a 2007 2.7-liter Santa Fe with 71,000 miles. I experience intermittent rough idle and rough low speed driving. It seems that in town driving will trigger these conditions. And when it's warmer outside that oppose to colder temperatures.
In most cases I can turn the car off, and after 2-5 minutes, start it right back up and the problem with go away.
The OBD codes are P0276 and P0306.
I have replaced the coil and injector on #6 cylinder.
The #6 spark plug is dry when the problem occurs.
I had the dealer update the ECM software
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2007 Sonata V6. He's spent many hours and a good chunk of change at the dealership trying to get it fixed and nothing has worked yet. They honestly have no clue whats wrong which kinda scares me.
First off here is his problem. Occasionally when he starts the car it will idle very rough and struggles to accelerate to 30-40mph. When this happens he pulls over and shuts the car off for a few minutes then it will run fine again. When all of this happens there is no CEL or any light at all that flashes or comes on the dash.
Here is a list of things that have been replaced
Fuel pump
Throttle position sensor
Crank sensor
Plugs, wires and coil pack
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First indication, I had fuel gauge issues showing empty when def had plenty of gas. next idled very rough at low speed. Auto Zone read and gave me p0300, p0464, p0302, and p0304. I need new throttle body injector. I would be happy to buy and install but any input before I do? Should I have it looked at? could be more?
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My 2007 prius has been idling very roughly recently. It seems to be every time the petrol engine kicks in when the main battery is low and charging. A few weeks back, the malfunction indicator light came on and i took it to the dealer. They said my spark plugs had a lot of carbon build up on them so they cleaned them up and put them back in. Also it was missfiring from time to time. The light went away but it is still idling rough if not rougher then before they cleaned the spark plugs. Its not just like that in the morning. Even if my car has been sitting in 40 degree celsius heat all day it still idles like that. They recommended I use better quallity fuel. I used to use E10 but when I was doing long drives, i filled up with normal unleded. I havent used E10 since then. It never had the rough idle problem when I was using E10 so I am curious to think my car may not like normal unleded. The fuel quality here in Brisbane Australia isnt known for its poor quallity. I'm not sure what to do next. People have recommeded for me to use Wynns Spitfire fuel treatment to keep the spark plugs and injectors clean.
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I have a 1992 Cadillac Brougham Hearse (Eagle Coach Co.) with a 305 V-8 that I’ve been having the following problem with. It had gotten to where it would start up, run at idle for 10 to 15 minutes and start cutting out, sputter and then die and would not restart afterwards. The next day, go out, starts right up and same thing after idling 10-15 minutes, cuts out and dies. So, I immediately think, fuel filter and or fuel pump! So, I replace the in tank fuel pump, sending unit and the in line fuel filter. Results remained the same. I’ve even swapped out the coil, ignition control module (ICM), starter and fuel pump relays from a like car and am still having the same results. Fuel gauge is reading between ¾ and ½ tank of fuel. Wondering what to look at next?
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After the engine is warmed, my normal idle in drive, park, neutral, or reverse is around 650-700 RPMs.
I have recently noticed that when a combination of conditions occur, my idle hovers around 450-500 RPMs and is pretty rough. This low, rough idle occurs when:
1) The car is in drive;
2) The car is at a full stop (foot on the brake or auto-brake hold);
3) All accessories are off (heated seats are off, radio is off, headlights are off); and
4) HVAC is Off.
I went to the dealer and they ran diagnostics. No error codes were recorded. The dealer looked at other ls460s and said they all do that. By the way, I noticed this after my VSR was done.
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My 2007 with 73k has started to idle rough at traffic lights. Not horrible, but a noticeable vibration. Rpm's are around 500. If I put it in neutral, rmps go up to about 800 and idle gets better. What could cause a rough idle like this?
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I am happy to own a Hyundai Santa Fe (2009) 2.7l which originally originated in the US. It is a really nice car, however, it recently over time developed the problem, which causes some pain - firstly it started with rough idle (pulsating), now it began to stall from time to time when decelerating.
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I tried to plug a OBD reader and here's what I get (well, that's a "pending" fault, but still might be useful).
I tried to browse around the internet. I believe it is unlikely that 2 oxygen sensors fail at the same time. It could possibly be caused by vacuum leaks or faulty MAF. Is it a common fault among Santa Fe?
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I have an 07 with the 3.3L and on start up the engine runs really rough and while driving when warm it keeps losing power with a regular rhythm. It almost feels like and injector or ign coil is dropping out. I have no CEL and have recently changed the spark plugs and rear upper O2 sensor.
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