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  1. A very stubborn overheating issue .. HELP!!!

    Here are the quick facts: 1994 Mazda B4000 4.0L, 2WD, 5-speed, 109k miles on it. Well maintained. Runs fine, has not lost any power at all since overheating issues started. No visible oil in coolant. No visible coolant in engine oil. Does not loose coolant. Radiator is 3 years old. Still...
  2. Help! 1994 4.0L Ranger misfiring & hesitating under load?

    I have a 1994 Ranger, 2WD, 4.0L, 5-speed that has been gradually getting worse over the last few weeks. The truck has 101k miles and it's pretty well maintained as far as tune-ups, oil changes, etc go. Here is what i am dealing with: At idle, truck not moving - everything seems normal. RPM are...
  3. Check engine light code 543 - what do i do?

    I got this code after a check engine light. The manual says "Fuel pump secondary circuit fault". Where do i start? What is causing this code? I also got a 177 code. Not sure if it's related. Truck lost some power when the check engine light was ON. Felt like something was clogged. Then it ran...

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