Question about 2004 Mazda RX-8
Whens it cold outside my truck will not start until the temp is above 42 degrees if its 36 and below the ignition turns but it wont fire
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Posted on Jan 02, 2017
They may not need to be replaced but they need to be repaired. Somewhere under there in that wire harness you have a power wire that has a bare spot chafed in the insulation. You'll have to unwrap that bundle, the one you jiggle, and check each wire carefully for a bare spot. Start with any wire that is red,pink, orange; those are the normal power wire colors, but don't stop if you find one. There could be more than one. Just tape over the bare spots, you don't necessarily need to replace them. If the wire harness has beeen rubbing on a piece of the car try to reposition it so this doesn't happen again. Zip ties work good for this. Hope this helps.
Posted on Aug 12, 2009
SOURCE: cold starting problems
depending on how fast it turns over if its turning over at a normal speed then your o2 sensor could be the cause of the problem a lot of your auto parts stores will run a free diagnostics check if they have the proper reader for your year and model
Posted on Feb 11, 2010
Symptoms are indicative of a partially broken wire somewhere, the cold increases the resistance in the wires and if they aren't working at 100% to start with, will cause your problem. I think you are on the right track, I would replace any high tension parts not already new then start looking for wires showing a high resistance. Check and clean ( with contact cleaner aerosol ) any and all electrical plugs in your ignition system. I would try drying out your computer and packing around it with silica gel to keep it dry.
Posted on Mar 25, 2010
There is a vacuum hose ,that most likely has a hole in it ,or the check valve is bad,or vacuum reservoir,look under the hood for these things
Posted on May 24, 2010
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