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Old 06-15-2010, 09:53 PM
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318 to 360 swap

hey i really hope someone can help me with this. last thanksgiving my dad and i swaped my 318 for a 360 in my 91 dakota. ever since it hasnt ran anywhere close to good. when we did the swap we used the 318 computer, ignition system, throttle body, and injectors. now it pops back through the throttle body and seems like its not fireing on every cylinder. my auto teacher looked at it and thought it was the map sensor and we fixed that problem along with reseting the computer. and it ran great for about a week or 2 then started acting up again. so i reset the computer again and it ran great again and so on for a long time and now that doesnt work. im completely lost no one has been able to figure it out.

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Old 06-16-2010, 04:40 AM
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i would think 318 injectors and computer on a 360 will run lean
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Old 06-16-2010, 01:49 PM
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it dos just a little bit but thats not the problem.
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Old 06-16-2010, 02:05 PM
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is it a throttle body injection system?
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Old 06-16-2010, 08:31 PM
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If this thing has the ultra craptacular throtle body injection that Mopar used for a few years, they never ran right, they just ran acceptable.
Most of the time when they run bad, the oxygen sensor gets stuck rich and the computer leans the daylights out of it trying to get it to go lean, and it is not smart enough to realize that something may not be right, so it just keeps leaning it out even if it runs bad.....
Get a scanner on it and scan it and take a close look at the oxygen sensor values, if they are stuck (not moving at all), pop an oxygen sensor in it. Also, the 360 did use larger fuel injectors than the 318, but the computer should be able to somewhat compensate for it!!!

Good luck and keep us posted!!!

Mike
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Old 06-16-2010, 09:47 PM
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yeah it is a throttle body. the o2 sensor should be working fine but i will check that out. theres also a gas smell that reasonly started. but i really dont think the problem is fuel i beleave its something to do with the computer,spark,or distributor. is it possible for the oil pump to fail and screw up spark?
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