Questions tagged [ignition]

For questions related to the process and components that generate the spark that ignites the fuel-air mixture in gasoline engines.

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5
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2answers
4k views

What are the disadvantages of wasted spark ignition? (Consider single cylinder engine)

In four stroke engines, spark occurs twice in one complete cycle i.e. at compression TDC and exhaust TDC (In some vehicles, there is a MAP sensor to identify the compression TDC. In such vehicles ...
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0answers
125 views

2005 Kia Amanti electronic systems turn on randomly without key in car

What would make my lights flash, radio come on, doors lock and unlock, seats move at random times day and night when you are not in car and key is not in ignition? Also my service engine light is ...
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0answers
4k views

shakes at idle in drive but fine at park or neutral

I was driving my 2006 Hyundai sonata (3.3L) yesterday during heavy rain. Suddenly check engine light started flashing. When I stopped at a red light, it started shaking badly. I noticed that when I ...
4
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1answer
296 views

Ford Focus change ignition pat system chip

I lost my key to my 2000 ford focus but don't want to pay for another key. I have a friend that will sell me the ignition key for real cheap. I was wondering, can I cut the wire an the with the black ...
5
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1answer
120 views

Possible reasons for failing to turn on ignition, strange vibration and sudden stop of engine?

My car is Ford Laser 1992 auto. Maybe it is too old. I have to turn the key a couple of time to start the engine. Recently I found it difficult to turn it on. As soon as it starts (and I switch to ...
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0answers
216 views

Renault Megane 1.9 diesel convertible won't crank when I try to start it

I have Renault Megane 2007 Diesel convertible. Put card in, press start, lights come on, won't crank. Then says low battery. I put new battery on same thing. I tried a jump start still nothing. Can ...
3
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0answers
47 views

Starting a Nissan Sentra

I have a 2006 Nissan Sentra. My lights and radio are coming on when I turn the key but the car will not start, it doesn't make a sound. I had a full service in February 2016 & I am 5,000 mi ...
2
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1answer
2k views

2002 Jeep Liberty 3.7 v6 misfires and bucks

Have an 02' jeep liberty with a 3.7l v6. Originally received a random misfire code and a code for misfire on cylinder 5. Replaced the coil on cylinder 5 and the random misfire code and misfire for ...
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0answers
64 views

09 ford f-150 misfire cyl.5 and 7 only has spark and pulse only went is hot

this hapen after drive the truck for 10 to 20 minutes went stop star misfire at idle only 5 and 7 cyl. has spark and injector pulse if i race the rpm couple time the engine star run normal again
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1answer
2k views

Motorcycle won't stay on when in gear

I've had a motorcycle sitting and it wouldn't start. After charging the battery and using fuel injector cleaner, the motor stays running but only in neutral. I called my local repair shop and the ...
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0answers
739 views

Replacing lock cylinder and ignition starter switch but what about codes/keys? [closed]

I have a question about a 2008 Beetle, 2.5l , SE We need to replace the lock cylinder and ignition starter switch. The place is asking us about 460$ in labor, and the parts are almost 300$. We ...
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0answers
73 views

Ignition causing problems with Electrics?? Ford Focus 06

Really hoping someone can help as taken to a mechanics and they keep charging me $$ although they cant find the fault! My computer system in 2006 Ford Focus doesn't work sometimes ( usually at the ...
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2answers
9k views

Diesel engine timing?

A petrol engine can fire the spark plugs slightly earlier or later to account for factors like revolution speed and engine temperature. However a diesel only fires when the mixture is compressed. ...
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0answers
605 views

96 corolla: is there a way to break steering wheel lock with only minimal damage?

Long story short - after diagnosing my 96 corolla with a blown head gasket (thanks to the members this community), it now needs to be moved to a final resting place where I will hack away at its ...
3
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0answers
592 views

Citroen Xsara - Worked this morning, now won't start

I drove my Xsara early this morning, got back in 2-3 hours later and NOTHING!! Dash lights, headlights, etc. are fine – so battery has power. What could be the issue to happen so suddenly and are ...
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2answers
7k views

2000 Toyota Tacoma - Won't start and it isn't the battery

2000 Toyota Tacoma When I put the key in it just turns and won't start. It isn't the battery. It seems like it isn't catching for it to start. Could I need a new key or ignition switch?
4
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1answer
353 views

2004 Malibu not starting

I have a 2004 Chevy Malibu. having starting problem; it turns over and act like it is starting, then dies after a few seconds. Have noticed that it started before,but when i put it in drive it died ...
3
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1answer
479 views

Citroen jumper buss key code sign in dash

CITROËN JUMPER BUSS (230P) 2.5 TD (76 KW,1996) I have this van, which is constantly showing orange key (code) sign in the dash. The thing is it use to happen in last few weeks but I could get away ...
3
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0answers
123 views

holden jackaroo won't kick over until the third attempt

I've just bought a holden jackaroo and the last 3 days in the morning I have tried to start it but it doesn't even try to kick over but normally on the third try it starts like there is nothing wrong, ...
2
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1answer
62 views

LEXUS ES300 '99

Ok so im having a problem that been happening for about 3 weeks. At one time we were at the movie drive in and my car died after 10min. Lights were all coming on and it would make several clicking ...
6
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1answer
283 views

Effects of shutting off Nissan altima (or any car) while in drive

Every now and then when I get home after a long day, I pull into my driveway and while the car is stopped (foot on the brake), I turn the vehicle off without putting the vehicle in "Park". Car is ...
4
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1answer
2k views

Honda Civic- no start-no crank

I have a 1989 Honda Civic DX Hatchback. I tried to start the vehicle after running it for some time. It did not start. When I turn the ignition switch, the battery light comes on (normal) and brake ...
8
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3answers
6k views

94 Z28 LT1 Camaro. Intermittent stalling/starting problem. Been haunting me forever

94 Z28 LT1 Camaro. Intermittent stalling/starting problem. Been haunting me forever. Typically my car will start fine when it's been sitting overnight. Then I'll drive to the gym which is 2 miles away....
6
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1answer
69 views

2008 Grand Prix GPX

What spark plug should I be using? I did my own tune up and the guy at auto advance told me to get some Bosch spark plugs for my car but then I notice less power. A mechanic told me I shouldn't have ...
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3answers
52k views

How to diagnose the cause of no power reaching the spark plugs when power reaches everything else, after checking fuses?

I've been trying to get my long-suffering Toyota RAV4 first generation (1998) to start after numerous different problems, the latest of which I've narrowed to the spark plugs not firing seemingly due ...
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1answer
756 views

08 Silverado static/scratching noise from dashboard

Recently my truck picked up a new quirk. When I start or stop the engine there is a static scratching noise that comes from the dash. I also tried turning the key just far enough to get power and ...
8
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1answer
5k views

How to check if spark plugs are firing? Coil-on plugs

While trying to diagnose a tricky car not starting problem I was asked to check if the spark plugs were firing at all. I've found plenty of resources on inspecting the condition of spark plugs after ...
3
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1answer
52 views

Rover Mini Mayfair Auto 1990/H

When cranking, the engine turns and there is a spark....not strong. I can't find the timing mark through the circulled(rubber) hole, but the arrow shows on the cover. How can I freely turn (by hand) ...
4
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1answer
47 views

Starting issue with 2007 F350 6.0 diesel

Intermittently, when it's cold out and I'm starting starting the vehicle and then shutting it off the vehicle will start to crank while the key is in the off position. With the vehicle in the off ...
4
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4answers
2k views

mercury milan key stuck in ignition, shifter will not come out of park

2007 Mercury Milan At first the key was stuck in the ignition. Now it wont shift out of park. Are these 2 issues related? Will installing a new shifter kit fix both issues?
6
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1answer
35 views

Mercedes E-350, 2006 sedan ignition problem

I own a Mercedes e-350 2006 sedan whose ignition box was vandalized and taken away by vandals. I could not start this car since then and I thought of buying a used ignition box to use on the car with ...
5
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2answers
321 views

2000 Honda Accord - Attempts to start cause lights to go out with no clicking and fails to start

I tried to start my car less than a minute after turning it off last night and it wouldn't turn over... it wouldn't even click. I tried a few times and then let it rest. After a 30 minute phone call ...
5
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2answers
1k views

volvo ignition key

I've got a problem with my 2001 Volvo S60 ignition key. One key will start the car no problem. Most recently, however, the other key will turn and the engine just grinds but won't start. Put the other ...
6
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4answers
2k views

Emissions Problem: Lambda AND CO Slightly High on my 98 Mazda 626

I just took my 98 Mazda 626 for it's inspection and they said the carbon monoxide is slightly high. The test is done using a tail pipe gas analyzer while holding the RPMs between 2500 - 2800 for ...
2
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1answer
1k views

Can I program a new aftermarket FOB for 2005 Mercedes benz c320?

I recently bought a 2005 Mercedes benz c320 at an auction and when I went to pick it up, I was informed that it did not come with a FOB due to the fact that the previous owner had not turned it in ...
2
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3answers
21k views

2003 honda accord not starting, starter and battery ok

When I turn the key the engine would not start. I wired power to the starter via a cable from the battery and it worked so the starter is ok. When I turn the key no power is going to the starter ...
6
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1answer
622 views

How Common are Voltage Drop Problems?

After watching this video on voltage drop, it makes me feel like testing the resistance of various sensors and accessories with my multi-meter isn't really a reliable test of anything, since I can see ...
3
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1answer
442 views

How does the ignition system control the Energy of the spark?

An automotive ignition system needs to provide a specific amount of energy to properly ignite the air/fuel mixture in the combustion chamber. Energy = voltage * amperage * duration. A specific ...
6
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1answer
3k views

Are There any Benefits to a High Voltage Coil Pack?

I'm considering replacing the coil pack on my 98 mazda 626 GF 2L, and am looking at a standard replacement at about $15, a standard replacement with 10 year warranty for about $21, and a "high ...
14
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5answers
42k views

What Color Should the Spark Be When Using a Spark Tester?

If I'm using a spark tester with an adjustable gap set to the correct gap for my car's ignition system voltage, what should the spark look like? I ask because I've seen conflicting opinions on this ...
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3answers
16k views

How does the car's ECU detect a misfire?

I was wondering what the specific mechanism used by car ECU's to detect misfires is, or are if there is more than one method.
4
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1answer
195 views

What Is The Output Voltage For The Mazda 626 GF 2L 98-2002 Coil Pack?

I've seen aftermarket "high voltage" coils that output 40kV, but what is the output voltage for the standard OEM coil pack? I want to use a spark tester with an adjustable gap to check the strength ...
4
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1answer
880 views

My Yamaha cut off while idling and now there is no power

I Started my FZR600 this morning for work. Normal crank. As I lowered the choke it started to die out so I tried to give it some throttle but it didn't help. The bike cut off completely. Checked all ...
4
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1answer
11k views

Do I Need to Ground the Spark Plug When Testing

When I'm using a known good spark plug to test spark at each wire, do I need to ground the threads of the plug to the engine block like the guy in this video is doing? What happens if I don't ground ...
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1answer
97 views

Ignition Key Replacement

I live in Calgary I shipped a 1998E=Class320 to Nigeria and i lost the key. Am going to Nigeria in June how can I get a replacement without the car here in Canada.
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2answers
5k views

What is the advantage of start-stop button over turn-key igniton in a car?

I have driven a Skoda Fabia which has turn-key ignition system. When I start the car, there is a whole lot of vibration in the car. When I was in the initial stages of learning car driving, the car ...
4
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2answers
4k views

How much current should my car draw with the ignition on?

With the ignition fully off, my current draw is pretty much zero, but with the ignition on (to be clear - engine not spinning, starter motor not engaged) it increases to 2.5 amps (at about 11.5v, ...
7
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2answers
3k views

2004 Saturn ION with Ecotec 2.2: Engine misfire with code P0300, ICM problem?

Car came in with a misfire complaint and check engine light on with code p0300. Looking at misfire history confirms high misfire counts on cylinders 1 and 4 along with lower counts on cylinders 2 &...
5
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3answers
9k views

Start a circuit or device when you insert key in car ignition

I want to start a circuit in my car when I insert my key in car ignition and let it turn off when the key gets removed. I have Honda Civic 2007. Can someone just help me out as to from where do I take ...
4
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1answer
6k views

2004 GMC Yukon Denali, intermittent no crank/no start/no noise

OK, it started doing this a few months back with no rhyme or reason. Before this happened, sometimes would start beeping after engine start. A long 18 beep procession. Don't know if related. When ...

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