Accent MC (2006-11) :: Intermittent Hard Start When Cold / Damp
Jan 21, 2013
Gremlin that causes the car to take a few tries to start when it is cold or damp? I've read that the crank sensor and fuel pump/fuel injection relays are possible culprits, but since the crank sensor is almost $100 I'm hesitant to throw money at an intermittent problem without a 100% diagnosis
-No codes in computer
-Brand new battery
-Mint NGK Platinum spark plugs
-Runs like a top once it starts
-5W20 synthetic oil
Usually it starts first flick of the key. Sometimes first flick fails no matter how long i hold it, then second flick it starts fine. If its really cold it sometimes takes up to 5 attempts. It cranks but doesn't "catch". The actual cranking itself is very strong with no hesitation which tells me it isn't starter, battery or thick oil.
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I have a 2009 Accent. Last year I started to have a hard start issue, very intermittent. It eventually got worse this year.
During the cold, it was never an issue, but during the summer damp or rainy days it occurred quite frequently.
It would turn over, but never start. If I pressed the gas peddle while starting it up, it usually would start the 2nd or 3rd time.
I changed the usual start up components; plugs, ignition coils, cam shaft position sensor, crankshaft sensor, and cleaned the throttle body.
None of those changes worked for the startup. When I removed my throttle body to fully clean it again, I noticed there was an extra air channel into the engine from the TB. Following this, I found the ISCA.
Removing, taking apart, and cleaning the idle speed control actuator seemed to have fixed the issue. It was so caked up with carbon deposit/build up, it couldn't fully rotate.
I used the throttle body cleaner to clean it out and then it began to spin freely (I removed it from the black sensor part first).
Since putting it back altogether, I haven't had a start up issue since.
Here are the notes from the service manual .....
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I bought a 2010 Elantra touring last September (it now has 166000 km). I love the car except for the hard shifts. It happens every morning when moving from a cold start. They vary from slight to pretty noticeable. I had the transmission flushed shortly I got the car. I just had the transmission reset about 2 weeks ago. It was smooth as glass for about a day or so after. Then back to square one. Yesterday it hesitated shifting between 4th and 5th going back and fourth a couple of times.
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My car has a bit of trouble starting every now and again. I have noticed it is when I have low fuel. When I try to start it it will just keep winding over. I'll switch my car off completely and try again. It usually starts the second or third time. What could be the problem? Its a 05/06 Hyundai Accent
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My 2006 Hyundai Elantra has developed an intermittent starting short that seems to only occur in damp conditions. The intermittent starting short/fault seems to only occur in the mornings when the car has sat overnight outside. When I put the key in the ignition all the regular lights and bells will ding as normal, but when the key is then turned from "on" to "start" the entire electrical system cuts off. No interior lights, gauges, dash lights, nothing. However, if I pop the hood and then drop it, electrical power will be restored. I have been doing this for the past two weeks while I tried to determine the conditions of the fault. This morning however, this "fix" wouldn't restore electrical power but the short occurred again in a cycle and the car never did start, despite trying the hood pop/drop method 10 times.
I had it towed to a shop this morning. When the car and I arrived, it started normally without issue. (of course!) I'm wondering if riding on the back of a tow truck dried out something or if that was immaterial. The person who looked at my car noticed a loose negative battery pole attachment and replaced the negative battery clamp. (His advice was to start small before needlessly pulling things off trying to find the fault.)
So, what could cause this or what course of action to pursue? The car has 94,000 miles and this is the first real issue it has had.
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My wife's 2007 Accent started having starting problems right after filling the tank. Is this an EVAP canister problem?
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09' Auto accent developed an issue that I haven't been able to sort out. Car began experiencing a condition where it was harder and harder to start, over about a 2 day period. As well, when stopped at a light it would idle fine, but almost stall when you tried to accelerate. Once above about 2k rpms it was fine, but then near 4k rpm it felt dead, didn't want to pull.
Only code was P0171.
Here is what I have checked thus far.
All injectors ohm out exactly at 15.1
-Fuel pump primes at key on like it should
-Verified cam/crank are timed properly (timing belt didn't slip a tooth)
-Car is MAP based, so no MAF to deal with. It's totally stock down to the paper air filter.
-Purge solenoid is closed and appears to be functioning properly.
I was checking things last night and this time it didn't want to start at all. I haven't checked for injector pulse or spark (it's coil on plug), but this didn't seem like part of the issue it was experiencing. Almost feels like a cam or crank sensor going out (timing is acting weird). Is there a relatively easy way to test the cam or crank sensors other than just trying new ones?
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My 07 has difficulty starting, only after adding fuel, or a fill up. I thought at first it was due to over filling, but it occurs after adding any amount of fuel. If I leave the car running while attempting to fill up, it sputters and dies. I have to press the gas pedal to the floor to start it, and it sputters for a few minutes, then runs fine, and starts fine until fuel is added once again. I searched and found where the General mentions a Vapor hose, but could not find more.
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I have a 2010 2-door accent, automatic. Today after driving about 45 minutes (engine warm), I stopped the car. When I tried to start again, it wouldn't turn over. Turned over on the third try; tachometer read at 0. Managed to drive home (35 miles), and the car did shift from gear to gear, but engine sounds tinny on idle. Turned off car at home and turned back on, still rough start and tinny idle but tachometer appears to be working again. No check engine light. At a loss; I've heard that there are a couple of crankshaft sensors that could do this, but I really don't know. Car is regularly serviced and has new belts (belts look fine), new strut plates, new tranny fluid, all about 6 weeks ago.
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On cold start ups only I can hear a tapping sound coming from the engine. It's a consistent sound that goes away after the engine warms up and idles down. Could it be the belts? I'm not concerned to be honest because the engine runs fine.
NOTE: I have also noticed that when cold in between shifts the vehicle seems to hesitate, almost as if trying to catch up. Hard to explain, but it only happens when the engine is cold.
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Lately my transmission has delayed shifting into first when I shift my car into drive on cold starts. It delays for usually about 2-3 seconds then kicks hard into first. The rest of the shifts are smooth and on time. I've tried replacing my transmission fluid, but that doesn't seem to fix it. Is there an actual problem with my transmission? I had the TCM replaced when it would get stuck and not shift. I have a 2009 GLS with around 53k on it.
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Since they replaced my transmission at 40,000 miles, I've noticed that occasionally, but not always, there is an unusual quick half second jerk or jump feeling when I first crank the car on a cold start. It doesn't happen all the time, just some times, but it has to be a cold start when I do feel it. What this could be? I'm thinking maybe some bolts weren't put tight enough when they installed the new transmission?
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My ugly little 2000 Accent that I've taken careful care of for 240,000 miles has developed an intermittent, multi-symptom cold starting problem, how to solve....
Background on the car: I've owned this car since it had only 9,000 miles, so I know everything that's happened to it over the years. I've kept up on all the regularly-scheduled maintenance over the years and miles - oil changes, timing belts, engine coolant, water pump, belts and hoses, pcv valve, plugs & wires, fuel and air filters, transmission fluid, etc.
No check engine light on, no codes to diagnose available
Not leaking oil from the top or the bottom
No vacuum leaks
Runs strong, no loss of power or rough running at idle or under load
No major components related to spark and fuel delivery have been replaced - coil pack, fuel pump, etc
Symptoms:
Starting problem 1 - The car will simply refuse to catch and start up, sometimes for as long as 10-15 seconds of cranking, after which it starts and runs normally. This happens infrequently, but has been becoming more frequent in recent months.
Starting problem 2 - The car will immediately start to fire (one or more of the cylinders will catch), but will hesitate to fully start up for about 2-3 full engine rotations, what I would describe as a rough start.
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My daughter has a 2000 accent , SOHC 12V, I think it's the 1.5L.. It will not stay running when the engine is cold...........after it warms up, or if it sits in the hot sun it's fine................it has 166K .
She said she took it to an auto parts store and had the engine code read, p1123 came up.....
Code P1123 : Long term fuel trim, at idle - mixture too rich..
What do you think this is caused by................ the inlet air temp sensor? I was told someone just replaced the air max flow sensor, that don't sound correct to me, but that's what they called it....probably the MAF sensor....
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The serpentine belt starting squeaking on cold and damp mornings about 18 months ago at about 60K. I replaced it with a Dayco belt, and the noise went away for about 6 months. When the weather turned cold last winter, the noise came back. So I changed the tensioner with both idler pulleys right about when the weather warmed up, and it was fine all summer. Now that it has gotten cold again, the squeak is back yet again and as before it goes away when the car warms up. I know it is the serpentine belt because when I spray it with water the noise immediately stops. I checked all the pulleys with the belt off and when I spin them I hear no noise. Is there something else it could be?
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For a couple months now, maybe longer, my 2010 Accent has developed a funny "rough sputter" I would call it at idle. It seems to be getting worse and worries me now. The RPMs fluctuate as it happens. The CEL has never come on throughout this. I'm not 100% sure it's not present when driving.
I did not replace the Fuel Filter at four years or the Fuel Air Filter at two years & four years. Could this be a Fuel Filter related problem?
I got out of my car today to listen to it and noticed the exhaust was intermittent along with hearing the car sputter.
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AC used for the first time since purchasing the truck last Oct. I notice and passengers in truck with me as well notice that the AC is not strong at all and it fluctuates from cold to warm with a heavy damp smell almost like its letting fresh air in mixing with the cold AC. It seems to be doing this more so when driving but will also do it at at idle after driving. Of course dealership states perfect temp blowing @34 and Freon at perfect levels. Max AC will not blow you out of the truck and reg ac at lowest setting feels like its on a vent setting. When AC first comes out it smells very damp mildew smell. 2013 F-150 Limited 3.5.....
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I have a 95 Chevy S10 pickup with the TBI motor, Z engine code, that has begun to not start on occasion. The engine cranks but does not fire at all everything else seems normal. This only seems to happen in the morning so might be cold related. If the truck starts I can drive it all day without any starting issues.
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After I drive a while I get a ticking , loss of power very briefly, white puff of smoke. Could it be rod bearings? Timing belt just replaced.
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I have a 2000 Hyundai Accent hatchback with 98k miles. About a month ago we were headed out of town and got gas about a mile away from the house. After filling up, the car wouldn't start. It would crank but not fire. Tried for about 15mins to no avail. Had it towed to local mechanic and it started right away. They kept it for the weekend and said they had no problems starting it, so without experiencing the problem they said they would just be throwing parts at it.
About 2 weeks after my wife drove to store and when she went to leave and same experience, but this time it started after trying for a couple of mins. Then just this Tuesday it wouldn't start in the morning. When it just cranks but not fire it shows a pending P0335 (crankshaft position sensor). So I ordered the part (won't arrive til Friday). When I got home I tried to start it as well to no avail; tried again Wednesday morning and evening, nothing. Then this morning (Thursday) it starts right up. Once its started it runs great. After recurrence of no start 2 weeks ago, I replaced spark plugs and spark plug wires.
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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.
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