Main computer problem...starts briefly but will not run
Problem started with an autostart install. Couple of days later on the highway the 2002 mdx died and would not restart. Local Honda dealer unhooked the autostart (astrostart) and put in a new main computer (the diagnostic they performed indicated the computer was not responding) , but then they quickly unplugged the new computer as it started to heat up. They say that without schematics including voltage specs, amp draw, etc., for corresponding/connecting modules they cannot diagnose the problem and are at a standstill. They are not an Acura dealer and say that it is extremely difficult to get Acura tech support. I have tried Acura customer service but they are not interested in helping out the Honda dealer/me. They are suggesting towing the mdx 250 miles to an Acura Dealer in Minneapolis. This is not a good option especially considering that Acura has authorized and compensated this Honda dealer for warranty and/or recall work on several occasions. It seems Acura will cooperate only if it benefits them?? Any ideas? How do I get tech support for my local Honda dealer? How do I get tech line answers?
Re: Main computer problem...starts briefly but will not...
Sounds like a bad install and the wiring might be crossed. But as they stated, without schematics, it's hard to know which wire is which. Acura should cooperated if the Honda dealer is authorized. Mention "small claims court" and see how fast they cooperate. BTW, the MDX and Pilot share alot of the schematics. i don't know why Honda can't play with it. I believe they don't want the liability.
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Next time it does it. try hitting the fuel tank. a couple times if necessary. if it starts back then your fuel pump is dieing. some times when the pump heats up they will stop working, only to come on latter. let me know
You need fuel, compression and a spark for a engine to run, with out any of these it won't run. Oh and these things need to happen at the right time. Check you have fuel at the injectors, then check you have a spark at the plugs. The compression is a little more difficult so then you need a mechanic.
Something is drawing power while the car is not running, and it could anything from interior lights remaining on to a defective main computer in the car. If you want to try a hit and miss analysis you can remove all fuses from the fuse box, then re-install one every couple of days. If the vehicle starts ok, install another fuse, and so on until you find the circuit that's drawing power. This could obviously be a time-consuming task, or you could be lucky with the first fuse. HINT: start with fuses such as interior lights, stereo, etc. The other solution is a bit costly, but it will yield a quick fix -- take it to the dealer or a reputable garage in your are for an electrical check.
Faulty cam sensor maybe - it controls the injectors. To diagnose, when you get a non-start, spray a V.small squirt of easy-start(ether) and if it runs a little then you have a fuel issue. The spark timing is controlled by the crankshaft sensor so that can be faulty and cause a mistimed spark but usually you'll get a mis-fire in those cases.