Question about 1999 Daewoo Nubira

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How can i get the 2 other cylinders working ? do i need a new computer ? the ground cable was loose and sparked a bit reconeccted but now 2 cylinders won't work so now i took out the car computer

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Try swapping the coils on the plugs to see if this restores spark to those cylinders. If it does, then just replace the coils which aren't sparking.
If it doesn't work, then yes, you may have a ECU issue.

Posted on Nov 14, 2012


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Dome lights on but no power anywhere else, changed lock cylinder, car wont start please help

if you charged the battery, it wouldn't matter if the car started or not, you should get dash lights. if i was a betting man i would say that you are not getting a good ground between motor and body of car. a poor ground messes up everything.

Apr 13, 2015 | 2003 Pontiac Aztek

2 Answers

The 4 cylinders on the driver side are not firing and this happened immediately we think it could be a ground problem we replaced the plugs and the coils work can you help

You need to read what you typed

You have NO VEHICLE shown
NO Motor

You replace NO parts-- until you find a problem,any problem

You find problems through studying how the system works
& then testing it.

Need more on what you think took place

What was tested & how

What codes are in the computer at the time it quit?

What does freeze frame data tell you?

Do you have any spark or injector pulse to any cylinders?

You can't ground out coils to look for spark
You need to use the proper tester & there are several types

Jun 16, 2014 | Cars & Trucks

1 Answer

1997 C180 no spark on two centre cylinders

I assume you have already checked your spark plugs to make sure they are properly gapped and are not worn or broken.

If your engine has a mechanical distributor, you probably need a new distributor cap and rotor, or at least you need to clean the high-voltage contacts. It's also possible you have bad spark plug cables. If you have an ohmmeter (one of the functions of a digital multimeter), remove one of the cables and check the resistance. If it's a wire cable, it should be no more than a couple of ohms. If it's a resistive (radio interference suppression) cable, it should not be more than a couple of thousand ohms (compare with a known good cable such as one going to another cylinder). If the cable reads very high resistance, is open, or you can't get a consistent reading, I recommend changing the entire set of cables - if two have gone bad, the rest are probably also approaching failure.

If you have separate coils for pairs of cylinders instead of a distributor, the coil feeding those two cylinders may be bad. You can test the coil secondary by reading resistance from the spark plug cable terminal to ground and comparing this to the other coils. If the ohmmeter test doesn't show anything significantly different between the good ignition circuits and the bad ones, or you don't have an ohmmeter, continue to the steps in the next paragraph. Note 1: prolonged engine operation with bad spark plugs can damage the coil. Note 2: on engines with multiple coil packs, an ignition module failure can prevent one of the coils from working, but usually the engine computer diagnostic system can identify this specific problem.

If you don't have an ohmmeter, it's more difficult to identify the problem. Try parking the car in a very dark place, open the hood, then start the engine. Turn off all artificial lights and watch the engine to see if there any visible sparks or corona discharge (the air near the part has a faint purple-blue glow) around the high voltage components. A spark from a cable indicates the cable has bad insulation. A spark or corona around the coil indicates a bad coil (broken-down insulation).

If you still haven't found the bad parts, try swapping spark plugs and cables (be careful not to mix up the firing order!) to see if the problem moves to a different cylinder, or if your time is more valuable than your money, replace the plugs and cables (and distributor cap/rotor, if your engine has them).

May 12, 2014 | 2002 Mercedes-Benz C180

1 Answer

Mate just done a timing belt on a 97 ford laser. now no spark any suggestion on why?


May 22, 2011 | Ford Laser Cars & Trucks

1 Answer

My honda i just put a new timing belt in it. but everything is line up but it not running right i also had a problem with ecu my ground wire was loose sso it was making everything go nuts i fix that but it...

Did your timing belt break or shaved some teeth,if it did it have bent a valve,I would pressure check each cylinder,to see how many pounds of pressure on each cylinder,should at least be 130 and up,your computer might need resetting take the positive cable off for about 10 min's, might solve your problem, how old are your spark plugs and wires,hope this works

Jan 07, 2011 | 1994 Honda Accord

2 Answers

My jeep wont start. i turn the key no crank, full battery. any ideas. tried to jump it nothing.diconected and reconeccted the batery still nothing. car was starting perfect no problem. Checked the shifter...

Just, Because you removed the battery connections and reinstalled them
will not repair a bad battery conection. Sounds like you have a bad conection at the battery. You'll need to remove the battery ends and clean
them with, a wire brush or a battery cleaning tool. Always, remove the NEG
conection FIRST,then the POS. After cleaning install the POS FIRST,Then
the NEG. Also, I believe there is a small conector on one of the cables.
Be sure to clean that conection also.
You, did not say if the lights are working.

Oct 18, 2009 | 2005 Jeep Grand Cherokee

3 Answers

Can someone tell me what check engine code P0 304 means?

You have a misfire on cylinder 4 that is serious enough to store a code. If the check engine lamp flashes while you drive, it is worse, and is CATALYST DAMAGE level. This can be caused by loss of spark, loss of fuel, vacuum leak, wiring, and a dozen others. Check if spark reahes the plug, check for injector pulse, check for carbon tracking or fouling on the your way up.

Sep 19, 2009 | 2001 Jeep Grand Cherokee

2 Answers

Have new battery and new alternator and battery still goes dead while driving Have 96 Grand Prix with same problem was wondering if fuseable link might be my problem?Which fusable link could it be? Keith

hi, to do a quick test on your battery just disconnect the positive cable from the battery and scratch it across the terminal on the battery if it sparks lots you have something grounding out like a starter or something they do that when the starters go bad if it sparks like crazy try unhooking the starter and see if it still sparks . keep looking for whats drawing all your power . when you scratch the wire on the + terminal and you dont get any sparks then it's normal and if you have a indash clock you'll probly always have a tiny bit of a spark when you test it . anyways try that see if you have a bad draw on your circuits if you do start at the starter , unhook and test .find what is *grounding out* is your main goal..

Jan 08, 2009 | 1996 Pontiac Grand Prix

1 Answer

98 escort 2lt. will not start.

Disconnect your battery's negative cable. reconecct then try again. This happened to me on an older model. Hope it works for you. if it starts , keep doing this until the computer box reprograms itself. hope it helps.

Oct 25, 2008 | 1998 Ford Escort

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