What causes a car battery terminal to get hot when trying to start it?
Possibly this1. If wires get hot when you try to start it and the motor is spinning over. Then the motor isn't starting and your over heating the cables by using the starter too much.2. If the wires are getting hot, but the engine isn't turning over then the starter is bad or the BIG wire going to the starter is shorted.3. If only one wire is getting hot at a connection, then you have a bad connection at that point. A symptom of this problem is everything electrical shuts off when you hit the starter.
What problems go along with a bad catalytic converter?
A clogged catalytic convertor causes the symptoms of a loss of power when accelerating or going up a hill. This is an often overlooked cause of loss of power, can cause check engine fault codes and lights, and mechanics will often change a few parts unnecessarily , especially if it is only partially plugged. A couple ways I check for plugged cats when a low power complaint is a symptom, and other obvious basic maintenance items have been checked for service is to have someone hold the rpm at about 1800 to 2000 steady. Then check for a good push of exhaust with my hand from behind the tailpipe. A plugged or partially plugged cat typically leaves a hot sickly feeling exhaust flow from the tailpipe. Compare to a known good working car nearby, known to be performing properly and with the same amount of cylinders. That slow , hot sickly flow at 2000 rpm compared to the hard push blowing your hand away of a not clogged cat is a dead giveaway, and I have NEVER misdiagnosed a plugged cat , or made false diagnosis with this method. Another way is watching a vacuum gauge connected to the intake manifold. When revving up, if the exhaust is plugged the gauge reading will climb then begin to slowly drop as the exhaust pressure builds up. Further testing will be needed to verify which part of the exhaust is plugged. Diagnostic by codes is unreliable and until now I had not heard of it. A code p420 only refers to catalyst efficiency. And can be set by faulty o2 sensors. Removing the exhaust and testing for engine power returning to normal works. But the hot sickly flow has been most accurate with my experience, in several cases where shops had missed it, were stumped and called me to come check. They are always embarrassed for missing the simplicity, but need not, as cars and their complicated electronics and even age old problems can lead to loss of power without any immediately obvious cause.
Why does high coolant temperature affect the cooling of the air conditioner in a car?
The answers I've read here missed a point I'd like to add.First, modern A/C loops are not usually affected by engine coolant temp, as the AC condenser is always in front of the radiator (or possibly next to it).However, two things can affect AC performance based on the engine getting over hot.AC cutoff - in times of extreme engine cooling demand, the engine can cut off the AC compressor to save that heat load on the radiator. A brand new vehicle will usually be designed so that never ever happens, but a few years of wear and tear on all the cooling components can reduce their effectiveness and make this happen.Other Thermal loads. If an oil cooler or charge air cooler is in front of the condenser, their increased load could reduce AC performance.As everyone has said, typically engine cooling is difficult at speeds that provide plenty of air for the condenser. And typically idle, which is difficult for the condenser, is nothing for the engine cooling circuit.If your AC is cutting out during a strenuous drive, my guess is your condenser or radiator is fouled/corroded enough to reduce its performance enough to kick in the cutoff feature.
What are the symptoms of having a bad ignition control module?
Hard starting and no starting. Especially if the hard or no start condition happens after the car has been driven awhile and is fully warmed up and stalls. Then if you let the car sit until it cools off and it starts right up there’s a very good chance it’s due to a bad module. Like Jon said you should have it tested by someone who knows how to or risk breaking down at the worst time in the most far away place. Good luck and hope this helps.
Can a bad car battery cause engine misfire?
So everyone on hear that says a weak battery cannot cause a misfire is wrong especially with a Subaru!!! I recently ran into this exact same problem with my 2013 Subaru Impreza 2.0L. My car began to have a rough idle anytime I was sitting at a stop light. Then the CEL came on for a misfire in the cylinder and the dealership wanted me to do $1000 worth of work replacing the coil packs and spark plugs. I specifically asked them if a weak battery would cause the problem and they said no as well. I knew my battery was weak because I couldn't leave my car radio on for 5 min with out the battery dying. All battery tests I did said the battery was fine. Today I finally got sick of having to worry about it not starting from leaving the door open or the radio on while it wasn't running. Sure enough my check engine light turned off and now my car has greatly improved performance! Also my car now idles like it is supposed to. I'm thinking my fuel pump was not getting enough power which caused the misfiring. Either way the problem is fixed and I suggest looking into the battery first!
What are some symptoms of a bad idle air control sensor?
Idle air control valves open to allow more air to "leak" into the intake, raising the engine rpms, or close when not needed. When your AC compressor kicks in or power steering is activated as you suddenly turn the steering wheel, the sudden drag on the drive belt will bog down the engine. These systems send a signal to the engine computer telling it they are active and it then signals the IAC valve to open, which increases the engine speed. Without this occurring, the engine could struggle, or die. The IAC valve can cause weird idle issues, mess with throttle functionality or cause the car to die. Sometimes they fail, get stuck or just get all carboned up. Sometimes people have success at cleaning them, but generally it is best to replace them when bad. Idle issues and even problems with the IAC valve may not be due to the IAC valve being bad itself. An idle issue does not mean the IAC valve is bad. It is best to pay close attention to how the vehicle is acting, and then communicate that clearly and as completely as possible to your mechanic. Intermittent problems can be very hard to diagnose. Details will help. Knowing more about the vehicle in question and its symptoms (in detail) will also help in understanding more about what it is doing.
How do I bypass power steering pump and completely get rid of it?
What do you mean when you say that the pump can't be repaired or replaced? If it's a matter of not being able to afford to fix it or you can't get the parts, then you are probably going to be without a truck for a while until you can get it fixed properly. While it may technically be possible to do away with the power steering, it is most likely going to be more difficult and more expensive than making repairs (if you want it to be safe at all).Vehicles that have power steering simply aren't designed to be driven without it. You will cause damage to other steering components such as the rack or gearbox. Not only that, but vehicles are geared differently now. The steering on a non powered vehicle was designed to function without hydraulics. Without power, a modern system's steering radius is affected greatly, they literally can't turn as far without power.The heavier the vehicle, the harder it is to steer without power. In particular, I would not attempt to drive any pickup(or larger vehicle) on the road without power steering. There's simply to much risk.There are only two times when I would even consider driving a vehicle with failed power steering:In an emergency. Either I need to get the vehicle home, or I need to get someone to a hospital and have no other options.It's a farm vehicle, the only thing I use it for is moving a few tools around a field.I've had to move two modern vehicles with failed power steering. The first was a Honda Civic that wouldn't run. We dragged it about ten miles with me steering the car. It was really hard to turn at all, and that was with a fairly lightweight car. Afterwards it felt like I'd spent the entire day weightlifting, just from a short drive.The other vehicle was my friend's Dakota pickup. I went out with him to get the truck. The pump had failed and we needed to get it back to his house so that we had space and tools to work with. We got it started, he hopped in to drive, and I followed in my car. I followed him right up until he plowed into a tree on a particularly sharp turn. He simply couldn't make the turn without power steering. He ended up with a tow bill, body shop bill, the repair bill for the pump, and a hospital visit on top. That's why I will never recommend doing away with power steering on a vehicle.
Will driving with a oil leak in the valve cover gasket hurt the engine? If so, how can this be prevented?
Is it an oil leak or an oil seep? Does oil run down the side of the engine leaving a clean trail as oil drips on the ground? Or does it just form a nasty, mucky oil-dirt combination that slowly builds?If it's actually a leak, get it fixed now. You can lose sufficient oil to starve the engine and cause premature wear or even failure. On top of that, you have an oil slick being left wherever you go, oil is probably dripping on the exhaust causing nasty fumes (not to mention a potential fire hazard) and you are having to spend money on oil that is just going to hit the ground. Not to mention it's not exactly good for those plants by your driveway to have oil washing into them.If it's a seep, don't ignore it. Get it fixed. If you have to wait a week or 2 for financial reasons, that's understandable, but don't push it out too far as it can develop into a leak. In addition, the dirt, cottonwood fluff, dandelion seeds, etc that can get stuck in the slime will do a few detrimental things. For one, it insulates your engine raising operating temperature a bit. Most cars engine oil relies on the side of the block and the oil pan to radiate heat away. Remember, oil functions as a lubricant, cleaner, and coolant! If the block and pan are caked over in grime, it is harder for the oil to transfer it's heat through the pan and into the air. This grime can also pose a serious fire hazard. Not fun.
What are the effects of driving a car with a misfiring cylinder?
OK. I am a gear head who loves working on cars and has done so since the 1960’s.If a cylinder is misfiring because of an ignition problem you will, in the short term, just experience a loss of power increase your fuel consumption. In the longer term, continuing to drive it that way could destroy a coil and cost you more money.If, however, the misfire is caused by an injector problem, you could seriously damage your engine. Running that cylinder too lean will cause it to overheat and potentially damage the valve or the piston. If it is running excessively rich the unburned fuel could be washing the lubrication off of the cylinder walls leading to severe wear. In either case, repairing the damage will be expensive.NEVER drive a car that has a problem. NEVER drive a car in which the Check Engine light is on. If the Check Engine light begins to flash, SHUT OFF THE ENGINE, NOW! A problem that to you seems small, if not repaired, can cause a lot of damage that will be very expensive to fix.Read your car’s manual. Do exactly what it recommends. Find a mechanic you trust. Doing preventive maintenance will cost you a lot less than repairing the damage caused by neglecting to keep your car serviced.