zcar? Posted November 19, 2007 Share Posted November 19, 2007 Ok so i got a 5.0 out of a 88 mustang, it uses speed density and i will not start when cold i have to use starting fluid and it will fire right up. then once it is going it will keep running and start fine. i dont get it, any help would be so hwlpfull right now thanks Jeremy Quote Link to comment Share on other sites More sharing options...
2savage Posted December 11, 2007 Share Posted December 11, 2007 Sometimes this can happen with how you wire the distributor and starter. Excess power for the starter reduces spark capability. Have you pulled the codes? Quote Link to comment Share on other sites More sharing options...
Gollum Posted December 11, 2007 Share Posted December 11, 2007 If it'll start using starter fluid, and does it with ease when doing so, it's obviously fuel related. Weather the ECU isn't putting in enough fuel due to sensors, or other various reasons, or if it's a mechanical related problem is hard to say. I'd get a pressure guage and check the fuel pressure, and if you have good pressure then there's a chance it's a bad sensor, be it coolant temp, air temp, etc. Quote Link to comment Share on other sites More sharing options...
zcar? Posted December 12, 2007 Author Share Posted December 12, 2007 thanks guys Quote Link to comment Share on other sites More sharing options...
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