I am seeking to reprogram the computer of a 2001 chevy venture. i have changed the heads, and put everything back together... yet it still does not start. only backfires. unhooking the battery posts doesnt work and the only other solution i have heard is to use a scanner... however, i am looking for a more inexpensive avenue to this problem.
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Check your mechanics manual. There is most likely a sequence of times you must turn your vehicle on, then turn the key back one click. you can actually hear the module trying to reprogram itself. If a vandal was at fault and damaged anything, you may have to take it to a mechanic. My daughters Chevy Venture was stolen and destroyed. Little by little we put things back in order..glass/modules/ignition etc. I was not able to reset the system, and had to take it to a dealer. Still cheaper than a replacement van though. Good Luck! :)
In the older cars, before all the emission laws added so much electronic garb, black smoke meant a fuel problem and grey smoke indicated a problem with internal engine parts like piston rings. Hope this helps.
if you need to know how to replace it find the air cleaner box on the passenger side of the vehicle should have either philips head screws or torx bit screw about 4 of them in all take them loose and pull top up pull out old filter and replace it with new one.
Most commonly with these cars the security system will do this if the battery is "drained" while trying to start the car. ie: a low battery that is too weak to turn the engine over. Usualy the power options & accesories will not work if this is happening.
To fix it you will need to ensure the battery is charged, you then disconnect the battery negative cable for about 1 minute with the key out of the ignition. reconnect the battery cable & start the car normally. Everything should be back to normal.
Let me know if there is anything more you need for this concern.