Question about 2003 Nissan Altima
Water pump ben replace
Well, the old car still has a pulse, that\'s good. You need to be looking for the coil primary signal, when troubleshooting the ignition and you have no spark. Don\'t stop by asking here, buy a repair manual for your car or look for repair guides to help you do a step by step troubleshooting where you cover the whole process and don\'t miss anything. A repair manual will have the wiring diagram and pretty thorough troubleshooting guides for your Altima. Good place to start looking for where to find that coil primary wire going to coil pack, what color wire and which terminal in the connector it is. See? Makes it so much easier. As a self taught poor mechanic, I have lots of gaps in my knowledge of cars. So I never attempt any job like yours without a repair manual to consult.
Last question: did you put a new timing belt on too? I hope you did, if it is a timing belt driven water pump.
How the computer controls spark timing is after inputs from the crank position sensor and the cam position sensor, it computes the time to send a signal to ignition module to cut the coil primary circuit. That initiates high voltage in the coil secondary windings and right to the spark plug for a spark. So if you got no spark, you need to look at all these things in this paragraph-this is your ignition system, just add in the ignition switch for giggles, lol, and anything else I missed. But that\'s basically it. Do yourself a favor and buy a manual and a digital volt/ohm meter (DVOM), if you don\'t already have one. You can learn on it as you go. Good luck.
Posted on Jan 18, 2013
SOURCE: i have a 1996 nissan
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The power transistor and the crank position sensor are all built into the distributor. The condenser is a separate unit next to the distributor. Try to replace the distributor and see if this will fix the problem.
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Posted on Jul 21, 2011
SOURCE: car starts and runs but
sounds like you might have a clogged exhaust, this can happen if catalytic converter is coming apart, the pieces will lodge themselves in the muffler or downpipes and restrict exhaust, causing it to back up into engine and cause vehicle to bogg down. To test, disconnect exhaust between manifold and catalytic, it will be loud, but you can test if engine revs better, if so replace cat and check rest of exhaust for debris and empty out.
Posted on Sep 19, 2011
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