Sonata NF (2006-10) :: 2008 2.4L GLS Hard To Start And Idles Rough
I have a 2008 2.4L Sonata GLS with 96K mi. It is hard to start and idles rough. I cleaned some components and changed spark plugs. I disconnected the negative battery cable to see if it would reset and relearn settings. Took a 15 mi drive and read codes and P0016 was pending, it was still idling rough and acceleration was still under par. I then cleared the code. I purchased a new cam sensor and compared the Ohm readings between the old and new Cam position sensor. The Ohm readings were different by 50% so I assumed the old was indeed bad.
I installed the new sensor, repeated battery disconnect for 10 min, then restarted engine. It was still idling rough (maybe a little better) so I rechecked for codes. P0016 was still a pending code. I cleared the code and P0016 cam right back. The battery is good (no charging issues), timing chain is original (no noise). Is there a way to test the crank position sensor before buying a new one? I've also seen in posts the Oil Control Valve (OCV) affects timing and seems to be a problem for these vehicles, however I have not received that code (P0011). I can limp it to work but will have to take it in if I cannot solve this soon. If it ends up being a timing chain problem what ballpark price should I expect to pay to have it done.
Mitsubishi - Diamante :: 1994 - Hard To Start And Idles Real Rough?
i have a 1994 mitsubishi diamante 3.0 sohc hard to start and idles real rough. it has new plugs,wires,cap,rotor button,fuel filter,and air filter.fuel pressure is between 45 and 50psi which is good i have good compression on all cylinders timing belt is good and i am getting spark to all plugs. with the car running i pull the plug wires off and cylinders 1 3 5 makes a difference but 2 4 6 their is no change.the car was setting for two years.it dose have new gas.the check engine light is not on and has no codes.
View 2 RepliesFord F-150 (2004-2008) :: 2007 - Idles Rough And Stalls Occur Often When Start
I have a 2007 Ford F-150 5.4l v8...
Codes
P0012 int cam position timing over ret bank 1
P0022 int cam position timing over ret bank 2
P0300 random Missfire detected
P0316 engine misfire detected on start up
P0340 cam position sensor curcuit fault
P0345 cmp sensor a circuit problem bank 2
Starts rough, idles rough and stalls occur often when start, after it runs for 5 minutes and sometimes dint starts at all. I replaced spark plugs, coils, cam shaft sensors and had oil changes done and. No effect.
Ford - Explorer :: 2006 - No DTCs / Hard Start / Rough Idle And Stalling
I'm a diesel mechanic and know my way around Powerstrokes, this 4.0 is not what I would usually work on, but I have a friend who has 2006 explorer 4.0L SOHC, someone told him he needed a motor with out explanation why, so I didn't want to see him get ripped off. The problem is it idles very rough, hard to start, and stalls. There's no DTCs , if you hold the accelerator slightly it will stay running, but once you let off it will either idle really bad and misfire or cut off, once pushing the accelerator the rpms raise very smoothly up til 3500 which is what I assume the rev limit is in nuetral.
I've done checks with focom and forscan, I was thinking possibly a bad fuel pump, while monitoring fuel pressure I see a range of 289 - 326 kpa with 26% fuel pump I guess duty cycle would be the correct term(once again I'm a diesel guy, and use to dealing with IPRs and Hpops) not sure if the desired fuel pressure is relevant on these but it always stays at 269kpa. I believe that equals out to 40-48psi while I believe this system is supposed to have somewhere in the range of 60 - 70, but I wouldn't expect to get a rough idle with no load with almost 50 psi of fuel pressure.
So with no DTCs Im baffled, and don't want to start wasting money just throwing parts at it. I've thought everything from fuel pressure sensor, to coil pack(replaced 4 months ago) to crank and cam sensors.
I did end up getting a code p106, but I believe this is because I didnt tighten the intake hose after checking the throttle bottle, I just slid it back on. out of the 4 days of testing first time I seen a code pop up besides unplugging some sensors here and there to make sure the pcm would actually register a dtc.
Ford - Explorer :: Motor Idles Rough Then Stalls When Turn On AC Or Defroster
When I turn-on AC or defroster, motor idles rough then stalls. My mechanic says it is not related to CHECK ENGINE light or exhaust O2 sensor? I have an 02 Ford Explorer.
View 4 RepliesFord - Explorer :: Vehicle Starts And Idles A Bit Rough - Cylinder 8 Misfire
I just got a 4.6 4WD Explorer in for rough running. It had timing chain noise and some odd codes for primary coil H codes along with cylinder 8 misfire.
I replaced the coil to get rid of the "H" code and it was fine. Still misfires on 8, and I really don't care because it's coincidence that the timing could be affecting it or perhaps.... bent valves!
The vehicle starts and idles a bit rough. Can't go very fast, and of course I know I should run it as little as possible!
Here is the deal, how should I present this to the customer? Should I let him know that some valves could be bent after replacing the chain (and all associated parts) and that it could still be effed? Or will I be fine after replacing? Pretty much, where they had a tensioner failure/guide breakage and valves bent too?
Ford F-150 (2004-2008) :: 2007 5.4L V8 Idles Very Rough / Shaking When Stopped
I have an 07 f150 v8 5.4 and it idles very rough. When i start it it seems to start really rough and just about everytime im stopped its shaking just enough to annoy me. Do you think its the spark plugs? I took into the dealer about a month ago and they said everything was fine. But its still doing the same thing. Also the A/C tottaly sucks is that they way it is? When I accelerate the cold air gets kinda warm and it doesn't get cold until i get up to speed.
View 14 RepliesFord F-150 - 1997-2003 :: 1999 - Timed Engine Now Hard Start - Idles Roughly?
I have a 1999 F150 4x4 5.4, I pulled the heads due to blown head gasket. Prior to pulling heads truck started and run fine other than miss on #1 cylinder. I timed the engine according to Haynes manual and posts on this site. Truck is now hard to start and idles very rough. I does seem to smooth out when reving the engine and seems to have plenty of power. Cant find any vacuum leaks or unplugged wires.
View 1 RepliesFord - Escort :: 1999 - Rough Start / Couple Of Hiccups But Runs And Idles Fine
I have a 1999 Ford Escort SE wagon with 112k miles on it. Last week when leaving work my car started very rough. This was unusual so I killed and restarted the car about three times before letting it run it's course (~30 seconds), after which the car ran fine. About a week later on my way to work the car seemed to 'sputter' (for lack of a better word) when I pushed down on the petal looking for some power on two separate occasions. On each side of the sputters the car seemed to respond fine, but when it did sputter there was a severe lack of power. I got to and from work just fine, but while letting the car idle in the parking spot of my apartment for a minute before shutting off the engine the check engine light finally came on. The following morning the car again started rough (as if it were misfiring/running on 3 of 4 cylinders) and this time it took a good minute before smoothing out. However, after the car smoothed out I experienced no issues on the way to work, no sputtering, no loss of power, nothing. Doing some initial online research I feel that the problem may be one (or more) of the following:
-Fuel pump
-Vacuum lines
-O2 Sensor
-Spark plugs (they are original)
-Fuel Filter (it is actually past due for replacement)
I plan on getting this checked out ASAP, but that still may be 2ish weeks away with my schedule. Some similar reports say that I may be having a 'lean mixture' issue (not getting enough fuel), but I haven't had the time to check the code. My question is, how "safe" is it to continue driving my car with the current situation? Is it at a super high risk of failure/random stalling during rush hour? Will it cause any damage to the engine if there is a cylinder misfire upon start up? I was also wondering if the car would be reasonably reliable to drive on a ~400 mile road trip on an upcoming weekend, but I am making plans as if it is not.
Additional Details:-Tried charging the fuel lines (car to 'ON' then 'OFF' position 3-4 times), had no effect on the morning start-up-Commute to/from work is about 20 miles
Ford 7.3L Power Stroke (1999-2003) :: F350 Won't Start Unless Press The Gas / Idles Rough
So this is reason #345 why I should never have let my wife drive my F-350. I am in the Army, and I got a frantic call from my wife (I missed the first 7) saying that the truck died and won't start. I drive all the way to the truck, pop the hood and discover:
1) there is no coolant; and
2) there is no oil (actually just EXTREMELY low on both).
So, I do what any good Soldier does, I push the truck all the way back home (downhill mostly), buy 5 quarts of oil and a jug of 50/50 coolant, fill up both and try to start the engine.
The last time it ran out of oil (small leak on a seal that I didn't know about) in 2006, all I had to do was fill the oil, turn the key, and press the gas until it kicked over (don't judge me, I was a dumb LT). I did this again this time (now, I am a dumb CPT) but now it: 1) idles very rough; and 2) won't start unless I press down on the gas when I turn the key. There is no gauge light when it does this. I read the thread on the UVCH, but I am concerned I might have done something horrible to my truck.
2003 Ford F-350 7.3L
Ford 7.3L Power Stroke (1999-2003) :: After Start Up RPMs Drop - Stalls Out Then Idles Rough?
2003 7.3 excursion.. The truck starts every time revs up and idles about 3 seconds then the rpms drop and it tries to stall out catches itself then revs backup and idles rough similar to if you have got air in the fuel lines from changing the fuel filter.. About 1 in five times the truck will stall out and it starts and immediately and idles rough but the rpms and everything runs at speed and rpms don't drop again! This is a reman engine/transmission recently installed.. The mechanic who installed it was unable to figure the problem out.
View 6 RepliesCamry :: 2007 V6 With Flashing Dash Lights / Rough Idles And Misfire
Having an issue with my wife's 2007 camry V6. We got the car new and the orig battery lasted over 3 years until a trip NY where the intr light was left on for a couple of days. After several tries, the battery took a jump from a tow truck and got us home. The car ran for a few days then we had starting issues as well as the dash lights would flicker and the speedo neelde would jump along with the RPM gauge. So we changed out the battery.
Now we only get about a year per battery. We also noticed the drained batteries are typically accompanied with misfiring and a bad coilpack. Not sure how that fits into the equation but we have changed 3 of the 6 coil packs. The most recent batt swap only lasted 7 months. The flickering lights and jumping RPM n Speedo needles happen last firday when my wife called me to say "its at it again" driving rough, ABS light, Ck eng light on and flashing.
She got home late and parked it in the garage. The next morning i went out to inspect and it wouldn't start. Fast clicking sound of a dead batt. I changed the battery (Costco batt fitment 24f i believe) yesterday (Monday). She called this morning and the car is still riding rough and the ck eng light is on. My guess is another coilpack.
Golf IV / Jetta IV :: Hard To Start In The Morning / Sometimes Idles At 500 Or Lower
So the car is a 1999 golf gti with a 2.0 AEG with a 5 speed manual. My brothers car. He has been telling me its been hard starting in the mornings for a couple months, sometimes it dies, sometimes it idles at 500 or lower, he has to rev it up to 1500 to get it to warm up then in kinda stays normal till he cold starts the car again, then does it all over. So he was driving down to my house to leave it with me to look at and on the way over he heres a big bang. has the car towed over here.
Cyl #3 has backed itself out and clearly a serious misfire, threads look fine so I put all new plugs in oem ngk three prong, runs ok still too low 400/600 stalling a couple times. this morning i installed new wires (Bosch)and a coil (aftermarket) and it barely wants to run now, stalled instantly. So I put the old coil back in and it stays running but watching the motor, its clearly misfiring. No codes as of yet and i have no access to vagcom. I've checked the firing order and wire placement on coil like 8 times to make sure it is correct.
Santa Fe (CM - 2007-12) :: 2011 - V6 Idles Rough At Red Light / Stop Sign While In Drive
I have really taken care of this 2011 SF Limited with the 3.5 V6 but it has always seemed to idle rough at a red light/stop sign while in drive. Is this common for all the 3.5 V6 engines? I run a fuel cleaner through it before every syn oil change and also use top tier gas. It drives nice but like I said, at a stop in drive it seems to run rough at around 500-550 rpm's.
View 10 RepliesBuick - Regal :: 1993 - Intermittent Hard Start / Idles Roughly
1993 Buick Regal 3.1l V6 Multiport injection
Problem: The care currently has a hard start, and a fluctuating idle. I bought the car a year and a half ago it still has low miles about 94,000. The care used to start fine but had a fluctuating idle in the range of 750 to 2500 rpm. My brother who is a mechanic and doesn’t live near, do all the gaskets when he visited. Then the idle fluctuation dropped to 750 to 1000rpm, when the car rpms fluctuate there is a whirring sound I can hear from the cab, like a pump or pull system. On occasion there is a vibration as well but it is inconstant and irregular. Fuel pressure seems to fluctuate as well. If the car will not start I give it a little gas and it will run fine after a minute or two, but then the idle starts to fluctuate.
No fuse issues I can tell and relays seem to be fine.Checked for lose wiring connections found, none. I have replaced:
- Hoses and gaskets
- Starter motor
- Battery
- Fuel Pressure regulator
- Fuel Filter
- Spark plugs and wires
- TPS
- Idle Air control Valve
- Crank shaft sensor
- PCV.
Right now I’m thinking it could be the fuel pump (a nightmare to change on this car), a fuel injector failing, and the ignition switch.
Ford - Explorer :: 2006 - Hard To Start?
It is a 2006 Explorer with the 4.0 and around 89,000 on the odometer. Around a couple weeks or so ago the wife said the explorer was hard to start one evening and it has been like that ever since. It cranks for about 5 seconds and then fires. So far it has started every time since this issue began. This is really the first issue we have ever had other than the radiator replacement a few years ago.
View 3 RepliesMazda - Protege :: Very Rough Start / Idles Fine And Stalls As Soon As Touch The Pedal
1995 Mazda Protege1.5 LAuto153K miles.
My car was running fine, then one day it started sputtering while driving, mostly when I accelerated. It stalled and I could not get it started. This happened on a day when it was raining hard, but not sure that had anything to do with it. A few days later when I went to pick the car up it started right up, it had stopped raining and been dry for 2 days prior. But about a mile into the drive back home it stalled and I could not get it started.
Here is what I have tested so far.
- Put in new fuel filter.
- Tested the fuel pressure and pressure regulator
- Tested the injectors with a noid light.
- Tested that the spark plugs were producing a spark.
After I pulled the plugs and cleaned and dried them (they were wet with gas) the car started, but I think not because of anything really related to the plugs. What I've noticed is that when cranking the engine if I give it gas it will not start but if I keep off the throttle it will reluctantly start. But once it starts the idle is smooth and as it should be. Then if I give it any gas it immediately stalls. It seems to me given these symptoms that it is getting enough air to idle but not enough air to match the increased gas.
The only CEL code that I'm getting (which I had before this issue occurred) is the "closed throttle position switch" (I forget the number). If it was an MAF, or IAC, or EGR issue would I not get a code? What this could be and how to test it. Again my guess is its an air intake issue but not sure where.
Oldsmobile - Leaks - Cutlassciera :: 1994 V6 Idles Rough And Usually Stalls If Put It In Gear When Start The Engine
I have a 94 Oldsmobile Cutlass Ciera, (3.1L V6 GM3100 engine). When I start the engine it idles very rough and usually stalls if I put it in gear. Eventually once it warms up I can drive it, but when I do drive it's extremely sluggish on accelerations and acts like its about to die. At constant speeds it runs mostly ok. We figured it was a vacuum leak, but we've tried every test we can think of to find it and talked to a couple mechanics and tried their tests and it passed all of them. Supposing it isn't a vacuum leak, then what it might be?
View 4 RepliesExplorer :: 1994 Ford Hard To Start After It Sits
I've replaced the fuel pump and filter, plugs and coolant temp sensor. It starts after I spray starter fluid in after a few times and cycle the key on to prime the line but is still hard to start. It runs fine and it seems that as long as the engine is warm or (guessing) fuel is still pressurized in the line it starts fine.
View 3 Replies