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Ba falcon runs rough on cold start after 15 hours ,after warming to normal running temp, it will restart everytime there after for the next 8-12 hrs

Plugs,coils have been replaced.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 2001 MAZDA TRIBUTE COLD STARTING PROBLEM

My wifes car had this same problem at about 100000 miles and after many trips to the shop it turned out to be carbor build up in the intake manifold. A fuel injector cleaner was hooked up and it helped the problem, but did not completely solve it. In oreder to get it totally clean the intake had to be removed and clean it out manually.

Posted on Jan 20, 2009

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SOURCE: Rough Idling, start-up early morning, until engine heats-up

this may be a sticking air flue meter take a matchstick .and push it into the hose this will let more air in if this works change the air flue meter

Posted on May 04, 2009

ghost4548
  • 776 Answers

SOURCE: from cold start engine warms to quater temp then

Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Otherwise, guesswork. I have MANY ideas that could send you on a wild goose chase. I strongly suspect EMS (Engine Management System) sensor beginning to malfunction as it warms up. First strong suspicion is the crank position sensor (CKP) - however,usually always sets a DTC (i.e., P0335, P0336). The next suspicion is the Engine Coolant Temperature sensor. The ECM uses this sensor's signal to adjust fuel, timing, engine RPM, etc based on engine temp. If malfunctioning at a particuar point during engine warm up, it could be telling the ECM the temperature is LOWER or HIGHER than it ACTUALLY is, resulting in the ECM to increase fuel (flood it) or give it LESS fuel (starve it). If this malfunction lasts long enough, the ECM will usually set a DTC for that sensor circuit, either a Range/Performance code, or a "LOW Input" or "HIGH Input" code.

Posted on Jun 07, 2009

  • 170 Answers

SOURCE: Cold start problem: 2005 BA Falcon wagon

PLUGS LEADS OR COIL PACK FAULTY

Posted on Aug 31, 2009

  • 156 Answers

SOURCE: 2002 madza protege 4 cyl had new ignition coils,

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.
Good luck

Posted on Mar 25, 2010

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