ReddMan
New Member
- Joined
- March 9, 2012
- Messages
- 6
- Reaction score
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- City, State
- CDA, Idaho
- Year, Model & Trim Level
- 94 Mazda Navajo 4L V6 4x4
I would like to apologize in advance if this post seems excessively long, I just wanted to make sure to cover everything to help get an accurate diagnosis.
So I have a 94 Mazda Navajo. Its the exact same thing as a 94 Ford Explorer Sport. The problem that I'm having is that it wont start. This is my girlfriends daily driver and with her baby around we need to get this thing running again pronto.
What happened:
One morning on the way to the store we started the truck and it ran for about 30 seconds and died. It proceeded to sit there and crank and crank and crank for about ten minutes before it decided to start again. We got to the store, went shopping, came out, and it refused to start. Crank crank crank. We had to tow it home and it hasn't started since. It would start and run for about five seconds when we sprayed ether in the intake but that's about it.
No work was done to it around this time. I changed the spark plugs about 2 weeks before but there were no problems.
What I've done so far:
New fuel filter
New fuel pump
New plug wires
New spark plugs (for the second time in less than a month, the first set weren't pre-gapped like they were supposed to be. Got the nice ones this time....)
New ground wire (the old one was corroded for like 8in....)
After all this it still would just crank. We called a backyard mechanic that we met and had him come take a look at it. He used a voltmeter and we learned that the injectors are getting 12V but not pulsing. Also our fuel pressure didn't seem to be where it should, but we don't have a fuel pressure gauge so I can't be sure. We also tested the coils to make sure that they are all good and there wasn't any problem there. Also tried to reset the Inertia Switch, but where the manual says there is a button no button exists. But the new fuel pump kicks on (when it wants to....:thumbdwn so I don't think thats the problem. Also checked the Fuel Pump Relay, no problem there.
I looked on here for what could cause the injectors to not pulse and came back with either a problem with the ECM, the Crankshaft Sensor, or our mechanics idea of the Fuel Pressure Regulator.
Today me and her uncle went to the junk yard (new ECM $200, junkyard ECM $15) and got all three of those parts. It was almost dark when we got back and since I need this truck running ASAP I put all 3 parts in instead of doing them one at a time. I know that was probably a bad idea, but its already done.
Now with the new (to this truck) ECM, Crankshaft Sensor, and Fuel Pressure Regulator installed there is absolutely no fuel pressure, and of course it still wont start. I'm at a complete loss here and I have no idea where to go next. We are running low on funds for this truck so basically and other part that goes on it at this point is coming from the junkyard.
What do you think could be causing this? Do you think its one of the parts I just replaced and they are just bad or could it be something else that I don't know about? Any and all input would be greatly appreciated.
Thank you
So I have a 94 Mazda Navajo. Its the exact same thing as a 94 Ford Explorer Sport. The problem that I'm having is that it wont start. This is my girlfriends daily driver and with her baby around we need to get this thing running again pronto.
What happened:
One morning on the way to the store we started the truck and it ran for about 30 seconds and died. It proceeded to sit there and crank and crank and crank for about ten minutes before it decided to start again. We got to the store, went shopping, came out, and it refused to start. Crank crank crank. We had to tow it home and it hasn't started since. It would start and run for about five seconds when we sprayed ether in the intake but that's about it.
No work was done to it around this time. I changed the spark plugs about 2 weeks before but there were no problems.
What I've done so far:
New fuel filter
New fuel pump
New plug wires
New spark plugs (for the second time in less than a month, the first set weren't pre-gapped like they were supposed to be. Got the nice ones this time....)
New ground wire (the old one was corroded for like 8in....)
After all this it still would just crank. We called a backyard mechanic that we met and had him come take a look at it. He used a voltmeter and we learned that the injectors are getting 12V but not pulsing. Also our fuel pressure didn't seem to be where it should, but we don't have a fuel pressure gauge so I can't be sure. We also tested the coils to make sure that they are all good and there wasn't any problem there. Also tried to reset the Inertia Switch, but where the manual says there is a button no button exists. But the new fuel pump kicks on (when it wants to....:thumbdwn so I don't think thats the problem. Also checked the Fuel Pump Relay, no problem there.
I looked on here for what could cause the injectors to not pulse and came back with either a problem with the ECM, the Crankshaft Sensor, or our mechanics idea of the Fuel Pressure Regulator.
Today me and her uncle went to the junk yard (new ECM $200, junkyard ECM $15) and got all three of those parts. It was almost dark when we got back and since I need this truck running ASAP I put all 3 parts in instead of doing them one at a time. I know that was probably a bad idea, but its already done.
Now with the new (to this truck) ECM, Crankshaft Sensor, and Fuel Pressure Regulator installed there is absolutely no fuel pressure, and of course it still wont start. I'm at a complete loss here and I have no idea where to go next. We are running low on funds for this truck so basically and other part that goes on it at this point is coming from the junkyard.
What do you think could be causing this? Do you think its one of the parts I just replaced and they are just bad or could it be something else that I don't know about? Any and all input would be greatly appreciated.
Thank you