Steve Meschke Posted July 6, 2009 Report Share Posted July 6, 2009 car ran great but now starts but won't stay running. if I pull the vacuum line off the fuel pressure regulator, it will idle but will die if I add gas quickly or try to engage the clutch. Strong vacuum. If I plug the vacuum line with my finger the car will die. All connections are good. any ideas? Quote Link to comment Share on other sites More sharing options...
Simon Posted July 7, 2009 Report Share Posted July 7, 2009 Any work carried out before the issue started? Do you have a hand controller to see what the inputs to the ECU are doing? Looking for thins like what the MAP reading is, TPS engine temp etc. Quote Link to comment Share on other sites More sharing options...
Steve Meschke Posted July 9, 2009 Author Report Share Posted July 9, 2009 no, no work done before this. I ran at the Peru National tour on Saturday without any issues and the car would not start on Sunday morning. did some more digging and the MAP sensor box was loose and flopping around the engine compartment. If I unplug the MAP sensor vacuum line, the car will start and idle but if I try to plug the vacuum line in the car dies. I think I need a new MAP sensor. This is for a LINK 1.6 ECU (1990 Miata) with a 1994 motor. I have the serial number if you need it. Can you help me with this? I really need to get the car running before July 23rd. thanks! Quote Link to comment Share on other sites More sharing options...
Steve Meschke Posted July 10, 2009 Author Report Share Posted July 10, 2009 checked the handheld readings idle map (98) 28 zoneig 600 10.0 inj = .0% 02=44 zonef T600 128 map limit 220kpa Quote Link to comment Share on other sites More sharing options...
Steve Meschke Posted July 10, 2009 Author Report Share Posted July 10, 2009 tried resetting back to the NA settings - no help about 3 out of 4 tries, the display on the keypad is garbled - FWIW Quote Link to comment Share on other sites More sharing options...
Steve Meschke Posted July 10, 2009 Author Report Share Posted July 10, 2009 if it is a MAP sensor issue, can a 1.8 Link MAP sensor be altered to work with the 1.6 ECU? Quote Link to comment Share on other sites More sharing options...
Steve Meschke Posted July 11, 2009 Author Report Share Posted July 11, 2009 fixed it. The knock sensor wire was gone, totally gone. When I ran a jumper to the diagnostic port, it fired right up. I have no idea where the original wire went. I did not install the Link myself so I did not see it until I started going over the installation instructions. Quote Link to comment Share on other sites More sharing options...
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