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#1
03-15-2007, 05:16 PM
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88 Comanche
What would make my 4.0 Idle OK,but backfire when I accelerate?
Here is what i've done so far... Replaced new,Distributor,cap,wires,coil,tps,crank sensor,map sensor,and control module.(used)  Any help would be appriciated,Thank you... 
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#2
04-06-2007, 12:03 PM
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Re: 88 Comanche
How about a set of plugs?
Also, does it backfire under a load but run smoothly when revving without a load or at high rpms? You might also want to clean the inside of the intake, carbon fouling there can cause an issue. How many miles?
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Ours: 2020 Jeep Wrangler 2.0, 53k 2013 Toyota FJ Cruiser, 84k Kids: 2005 Honda CRV, 228k
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