1995 Mazda Protege Hard Starting

Tiny
DARWIN MITCHELL
  • MEMBER
  • 1995 MAZDA PROTEGE
  • 4 CYL
  • 2WD
  • MANUAL
  • 220,000 MILES
In warm weather my car starts fine. But if it is cold (below 40) I have to hold the ignition on and let the car turn over for about two minuts before it finely starts. After it has warmed up it starts fine and runs fine. The fuel pump, plugs and wires were replaced back in April of 2008. The engin was rebult at 155000 miles and compression seems good. I wounder if it could be the distributer.
Wednesday, November 19th, 2008 AT 5:28 PM

3 Replies

Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Ok I need you to do something and get back to me at to how it works ok. When you turn the key on engine off you should hear the fuel pump right. So in the morning when it is cold turn the key on engine off (do not try to start it), then turn the key off for about 15 sec, turn key on engine off again and do this about 3 times then try to start it and let me know if it starts right up ok.
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Wednesday, November 19th, 2008 AT 9:20 PM
Tiny
DARWIN MITCHELL
  • MEMBER
  • 2 POSTS
I tryed what you asked but it did not change. It still takes a long time to start when cold but fine once it has warmed up.
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Tuesday, November 25th, 2008 AT 11:42 PM
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Ok great that tells me the fuel pump is working. Now we need to test the coolant temp sensor to see if it is bad. What you need to do with a digital multi meter is measure the resistance of the sensor. So unplug it and set you meter for ohms and test resistance on the sensor across the two terminals. Let me know what you find and what the temp of the sensor is. So if the engine is at full operation temp then it should be about 200 deg. If it cold then what the outside temp is will get me close enough. At full operating temp you should read 200-400 ohms anything more or less the sensor is bad and needs to be replaced. Let me know what you find here ok. Thanks and Have a Great Thanksgiving ok.
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Wednesday, November 26th, 2008 AT 10:07 AM

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