I had a rough idle and now car wont start. 2002 elantra, 4 cylinder. replaced tps, replaced fuel filer, cleaned IAC. I can hear fuel pump car wont stay running...
View 22 RepliesI just picked up an 02 Hyundai elantra manual trans that needed a transmission. ran fine before I replaced transmission but after putting it all back together the car now how has an erratic idle. it will rev from 2-4000 rpms. I tried spraying for vacuum leaks idle didn't pick up any higher. replaced tps and iac and didn't make a difference. the only thing that did make any difference is unplugging map sensor. dropped idle to about 1200 rpm but ran rough. could this affect the idle.
View 1 RepliesMy GF has a 2002 Elantra, and recently, she's had a remote start kit put in her car. Previously, though, we were moving something in/out of her car and broke the shift knob and the rod became bent, so we had to bend the rod back to be able to put the car back into park. (The car is an auto).
Recently, she's had a couple rough/no starts from her car. There have been a few times where she would come over to my house and the car would not restart soon after she turns off the ignition. However, the car will start rough about 3 hours later and run perfectly fine once it cranks. This doesn't happen often, but enough to be troublesome.
The problem with this though is the fact that sometimes it starts and sometimes it doesn't, and it runs PERFECTLY fine. The lights are not dimming, the battery is not dying, the car has not required to be jumped. While having these problems we drove the car around for about 5-6 hours and it was perfectly fine. Her dad thinks it's the alternator, but the battery hasn't been losing any charge and the battery hasn't been dying. There has been one time where her father moved the shifter up and down and put it back into park and the car started just fine. Could this be related to the shifter, and how the car isn't reading that's it's fully in park to relay ignition? Her dad said he tested the alternator and it was "bad," but like I said, if the alternator was bad, her battery would be losing charge, and that is definitely not the case.
I have 2005 elantra ve and I got rough idle stop for a while.
View 12 RepliesBelow is a link to a video showing what my 2003 Hyundai Elantra is doing. It is idling very rough (Jerks at idle) and can actually be heard in the exhaust. I think it may be miss firing?? Does not do it at speeds over 60. Under 60 it can be felt at times, but only at low RPMs. [URL] ....
View 16 RepliesI have an '04 Elantra GLS with 274k on it. I've been caring for it myself with basic maintenance; that said, I changed the oil in it about 100 miles ago. Halfway through my drive home it started to idle rough under 1k rpm.
I've noticed a lot of other Hyundai's have the same issue. What would be/is the most COMMON cause of this? Timing belt? Basic tune up? I moved a state away from my local shop and I refuse to go to a Midas/Jiffy/ect.
2002 elantra hesitates and sometimes stalls staring from rest. Worse when cold but still sluggish after warm up. Where do I start?
View 7 Replies2002 Hyundai Elantra GT 2.0L 140k miles
Symptoms:
- Intermittent rough idle when hot, slight shutter, surges between 700-800rmp
- Intermittent hesitation when accelerating, cylinder 2 misfire when hot and under load
- Misfires in all gears under load, mostly when under 2000rpm
- Code P0302 when scanned, no other codes
- Symptoms appeared suddenly, not gradually over time
What's been changed:
- Replaced spark plugs, little or no improvement. Old plugs looked worn, but generally in good shape with no significant deposits.
- Cleared code and swapped injectors between cylinders 1 and 2, after test drive P0302 code came back, so it seems that the injectors are good. If the injector were bad I would have expected the misfire to change from cylinder 2 to cylinder 1.
Inspection and Testing:
- Ignition System Testing
- Spark plug wires and primary coil are within specification.
- Secondary coil resistance is high on both packs. Could this be causing a problem with just cylinder 2? Is it worth replacing?
Spark Plug Wires: Specification: 5.6 Kohm/meter +- 20%Cylinder 1: 2.49 Kohm (Longest)Cylinder 2: 2.03 KohmCylinder 3: 1.64 KohmCylinder 4:1.36 Kohm (Shortest)
Primary Coil: Specification : 0.58ohms +- 10%Actual: .6 and .6
Secondary Coil: Specification: 12.2 Kohms +- 15%
Actual (Cold): 16.03K for Cylinder 2-3 pack and 15.94K for Cylinder 1-4 pack
Actual (Hot): 18.54K for Cylinder 2-3 pack and 18.44K for Cylinder 1-4 pack
Air/Fuel System Testing:Fuel system seems to check out. I do not believe the problem is fuel related. There are no obvious cracks or leaks on the intake manifold. A good spray of Carb cleaner all around the manifold causes no change in idle. I might try propane later. No obvious vacuum leaks.
Fuel Injector: Specification: 13.1-14.5 ohms
Actual: Cyl 1: 14.9, Cyl 2: 15.3, Cyl 3: 15.3, Cyl 4: 15.7
Compression Testing:Compression is not great, but within specification. Could the slightly lower compression in Cylinders 2 and 3 indicate a head gasket leak between those cylinders? Could this cause a misfire in Cylinder 2?
Dry Compression: Specification: 145-218psi, <15psi between cylinders
Actual: Cyl 1: 165, Cyl 2: 155, Cyl 3: 155, Cyl 4: 160
Oil/Coolant/Tailpipe:
- Oil looks normal, not brown or milky
- Coolant looks normal and is full, no signs of leaking (coolant has not been changed in a very long time, could a coolant flush work?)
- Exhaust looks and smells normal from tailpipe.
Sticking valve? How would I check this? Bad sensor somewhere? Doesn't a bad sensor usually throw a code?
2003 Elantra gt 90,0000 miles manual transmission. Rough idle under 1000 rpm it smooths out completely above 1000 rpm.
Also the engine makes a ticking noise from a cold start up. It stops making the ticking noise after 1500rpm or when the engine warms up.
Occasionally the car has a sputtering backfire. This happens when I park the car after being on the highway.
Replaced the plugs, wires, and the pcv valve. Dropped the oil pan and it and the oil pump pick up screen were clean.
The only check engine light to come on was for the speed sensor. It has since gone out on it's own.
I have an 04 elantra 2.0. Seems to idle rough when in D and foot on brake at the the lights etc. Put it into N roughness goes away.
View 15 RepliesI have a 2001 Elantra with 170K miles. well taken care of. I've been having a rough idle issue for some time now. The car idles very rough. I checked for codes and I got the cylinder 2 misfire code (P0302)...
I started out and replaced the plugs and wires, no solution...
I replaced the coil packs, no solution...
I replaced the MAP sensor, no solution...
I figured it may be no to low compression, so I did a compression test and all cylinders came back normal, still no solution...
I figured it might be a dirty injector, so I poured some seafoam in the gas tank, and no solution...
So my next step is to switch out the injector. Is there anything I am overlooking?
Here's the big thing that is happening too... Everytime I fill up the gas tank, I turn the car on and it idles even rougher. Like if you talk while sitting in the car, you sound like Chevy Chase when he is on the vibrating bed with Beverly D'Angelo in the movie vacation! LOL. It slowly goes away after 10-15 minutes of driving. All this rough running engine ONLY happens at idle, otherwise it runs very smoothly.
I just purchased my first foreign car ever. it is a 2002 Elantra it idles very rough changed plugs using NGK and wires new fuel filter and ran 2 full tanks of high grade fuel with STP fuel injector cleaner. but had no effect on idle also have no check or service engine light. What to check next?
View 3 RepliesMy wife drives a 2002 Hyundai Elantra GT. Recently the car started idling very rough with rpm jumps back and forth from 1500 to 2500 rpm. The check engine light came on and threw a code for the IAC. I also notice a clicking sound coming from the engine and I can see sparks arching at the coil/plug wire. The arching is happening at the coil with the numbers 1 & 4.
The car is difficult to drive. It shakes and surges and isn't pleasant to drive at all. These issues started happening very recently. The car ran great up until now. We've stopped driving it for the time being until we solve the problem.
We had the car serviced a few years ago and they changed the IAC and mentioned something about a gray wire that we should watch out for.
I'm not really sure what the issue is. I don't know if it is the spark plugs, wires, or coil. Or it could be the IAC or something else. I'm comfortable working on the car myself, but I would rather not try fixing many things if it is just one thing actually wrong.
So far, the only thing I've tried is to spray some carb cleaner into the throttle body towards the IAC in hopes that it would clean it and solve my problems.
Where the IAC is located. I want to try remove and clean it, but I'm unsure of exactly where it it. I know it is somewhere on the throttle body or intake manifold, but I'm not sure exactly what I'm looking for.
When I try to start my wife's '06, it takes a little bit longer to start than in the past (used to take only 2 turns or so, now it takes 3 or 4). When it does finally ignite, it's a rough ignition and then it goes to normal. Why this is happening?
View 3 RepliesI've got a 2006 Elantra with 102,xxx miles. When starting the car, especially a cold start, it ignition is rough, sometimes a jolt. It runs fine after that. What might be the issue? FYI, i replaced the spark plugs in August or so.
View 4 RepliesRecently replaced spark plugs and wires on 02 SL1 with 209K miles. Was running rough, rough and high idle, almost died on me driving home one night. After replacing everything, car still wouldn't start. Spent some time on the forums and some suggested a leaking intake manifold gasket, so I changed that out as well as the coolant temperature sensor. Still it won't start. I am getting good spark at the plugs (coil arcs across the posts when plugs wires are off).
Really not sure where to go next with this. I can hear the fuel pump hum when I turn on the ignition, and I get a good spray at the fuel rail. Basically I turn the key and it cranks, sputters, and will almost catch, but then not. What next??
I have a 2002 Camry SE (V6) with approx. 180K miles. The Engine mounts were shot so I decided to change them. I am a reasonably qualified mechanic (FAA Aircraft Mechanic) and perform most my work on my cars so didn't think this would be a big deal.
My procedure was to jack up front & put frame on jack stands then removed both wheels. Then with hydraulic jack and blocks under oil pan I started by removing all or the three lower engine mount hold down nuts (3 on bottom, 1 on top of each. NOTE: I changed the dogbone first which took 5 minutes.
I then jacked up engine about two inches or so and pulled out each old mount, then lowered engine back down making sure everything lined up as best I could. Then finished by tightening all of the nuts. Done. ....or so I thought.
When I went to start, the engine cranked but with a an unusual vibration and generally rough idle, more noisey than usual. When I drive it shift fine and everything works, just unusual vibration and noisey inside car.
I also used my BOSCH code checker and got ZERO CODES.
What is even more unusual is the engine when you are outside the car listening sounds fine. Just sitting inside do I sense the unusual vibration and noisy idle.
I checked for loose vacuum hoses, anything obviously pulled loose, etc and found nothing.
Again the car started and idled fine before the engine mount change now starts kind of rough and is noisy [inside car] but quiet outside.
nothing really changed except the moving of the engine block up and down to get the old mounts out.
Replaced Fuel Pressure Regulator but still notice smell of gas and sometimes at start up rough idle.
View 7 RepliesWhen I start my S60, it runs extremely rough and will eventually stall. I do this over and over . . try and put it in gear and it will go a bit, run very rough, and will stall out. After a few minutes, something kicks in and it runs perfectly. If I don't try to drive, and sit with it idling, it runs very rough and I have a difficult time getting the rpms up. Then, the engine will suddenly race for a bit and everything is fine. It is very periodic in nature, doesn't matter if the engine is cold or not. It can sit over night and be fine, or do it, I can run around all day without problems and then suddenly it decides not to start up and run. The temperature outside doesn't seem to be a factor.
View 2 RepliesI just recently had a new (used) gas tank and new fuel lines (front to rear) put on the car.
On the first fill-up, I pulled out from the gas station, drove 20 seconds to the next red light. The car stalled (automatic transmission) when I came to a stop. It was hard to start and hard to keep going, and had intermittent periods of extreme power loss when I drove it down the highway.
Took it back to the shop, there was an engine code for the O2 Sensor, so the O2 was replaced, but made no difference. They checked fuel pressure and the catalytic converter, both were fine. They wanted me to keep driving it until another code came up.
As the tank neared empty, the car started driving almost perfectly. Filled it up again, and the problems started all over again. I have tried driving it with the gas cap off to make sure air can get in to replace the gas, but made no difference.
I changed the spark plugs, and all 4 of the old ones were covered in black carbon from the fuel running too rich (i assume).
Also, when the car is idling and it starts struggling, the exhaust does smell extremely strongly and is grey.
Now, engine code [P1166 O2S Controller Adaption Diagnosis Malfunction (bank 1)] is appearing (I have to check with the garage monday to see if it is the same code they had earlier).
I'm not sure why a new tank would cause this, unless somehow dirt/rust ended up where it didn't belong during the changeover.
2002 Elantra idles high, 2.5 rpm, just when I start it up in the morning. The second I put brake on and put it into gear, it settles down and doesn't do it again until the next morning.
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