AboutDennis W Expertise I am a retired Ford master tech specializing in electrical, climate control, emissions, driveability, chassis, brakes, and any light repairs. Currently employed by an independent shop that appreciates my knowledge and abilities.
Cannot answer transmission or parts questions, these are not areas of my expertise.
Experience 32 years of auto repair, diagnosis, and emissions testing, in service staions, independent garages, and 20 years with Ford dealers.
Organizations National Street Rod Association (NSRA)
International Automotive Technicians Network (IATN)
www.blueovaltechs.com
IAMAW (retired)
National Street Rod Association
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Education/Credentials Riverside City College Automotive technology program
Ford Master Tech Certified Engine and Chassis Master (Over 500 hours)
ASE Certified in 7 categories
6 years training in Union 76 Pro-tech program
Awards and Honors 4-time Technician of the Year at Almaden Lincoln Mercury
Ford Master Tech
Union 76 Pro-tech Master tech
Question I have a 1990 Mustang GT and I am in trouble. I have a miss and can't seem to figure out what is causing it. I have replaces my distributor, cap, rotor, plugs, wires, fuel pump, timing chain, triple checked my timing, ran compression test on all cylinders, all of my injectors are firing and I replaced my fuel filter as well. The problem has gotten worse and my car will not even run unless I advance my timing to about ten degrees past tdc and then it pings and overheats my engine. I do have a code for my speed sensor but am not sure if this would cause the
problem
Answer Justin, it sounds like you have covered just about everything. My concern is what the compression readings were, how you determined the injectors are working correctly, and if you disconnected the SPOUT connector before setting base timing.
I have this question stored and will continue to consider possibilities. I do not have a miracle answer for you, but will continue to think on it.
The speed sensor will NOT cause the problems you describe.
Is the firing order correct? The Mustang HO engine has a different firing order than other 5.0 engines. Check to make sure you have it correct: 1-3-7-2-6-5-4-8
