88 BRONCO BIG BODY
1988 Ford 500 • V8 4WD Automatic •
My bronco had a regular 5.0 in it. I have swapped it with a 89 mercury 5.0 ho. I used my old 5.0 oil pan, timing cover, water pump, manifolds, valve covers, fuel rail, injectors, upper intake and lower intake, all sensors, wiring, and ecm. The new ho has a different firing order but wont run properly with it. If I use the non ho firing order it will run better but not properly. I have lots of power but at low speed its got a dead miss and it idles like a car with a big stall cam and sometimes will die. Do I need the ecm for the ho or the 19lb fuel injectors that the ho normally runs. Or have I got other issues? The parts store say that they both call for the same distributor. I am thinking that my ecm wont allow the fuel injectors to fire with the ho firing order. I need some real advise. Every one said this was impossible to swap but I have came this far and have it running. Hate to turn back now. Could I cross wire my injectors to the ho firing order? I also welded the smog pump lines on the back of the block. Thanks for your time!
January 21, 2011.
January 21, 2011.
Check out the related content while we wait for the question to be answered by a professional mechanic.
I would like to know the fire order for a ford f150 with 5.4 motor please.
1 answer • 2000 Ford F-150 • 156,708 miles
1994 GMC Jimmy mileage: 100,000. Can you tell me the firing order on a GMC V-6 and how the cylinders are numbered?
1 answer • 1994 GMC Jimmy • 100,000 miles
I need to know the firing order of my 1999 Corola. I took the wires off the plugs and do not know the order to return them. Please help.
1 answer • Toyota Corolla
Hi, i'm studying a car mechanics course at college and i just can't get my head around working out what each cylinder is doing. like the firing order of one engine could be 1342 and ...
1 answer • All Other Makes All Other Models