+- Carolina Broncos (https://cb4x4.com)
+-- Forum: 66-96 Ford Broncos (https://cb4x4.com/forum-7.html)
+--- Forum: Bronco Tech (https://cb4x4.com/forum-40.html)
+---- Forum: McCutcheon Custom Garage (https://cb4x4.com/forum-12.html)
+---- Thread: the 77's upgrades (/thread-2693.html)
the 77's upgrades - jollygrngiant - 03-15-2011
Sounds really good Chuck! Thanks for the invite the other day. Sorry I couldn't get there in time.
the 77's upgrades - firefighter2134 - 03-15-2011
thats awesome.
the 77's upgrades - blazinchuck - 03-18-2011
well...its running! but, running like chit!!!! ive got codes...alternator is not being turned on via rjm harness. starts up great, sounds good for a minute...then starts surging so bad it almost shuts off
the 77's upgrades - broncosbybart - 03-18-2011
that sucks. any idea as to why it isn't running right?? looks like you've been busy
the 77's upgrades - firefighter2134 - 03-19-2011
that doesnt make sense. you used the same harness outta fbg right?
the 77's upgrades - chuzie - 03-19-2011
Sent you a long email. Get back with me; will do what I can from here.
the 77's upgrades - blazinchuck - 03-21-2011
aight, i swapped a couple relays and got this thing charging and running.
however, yesterday...went to go out in the bronco...and it wont take any throttle past 1500rpm. just bogs! dont know where to look now
very tired of this crap
the 77's upgrades - chuzie - 03-21-2011
My first thought would be fuel. Make sure your return line is unrestricted back to the tank. Make sure there is not a negative pressure in the tank. Try pulling off the gas cap and see what happens. What are you using for a fuel pump? Same injectors as before?
If the low end loping was fixed with the alternator I guess we can eliminate vacuum lines as the culprit.
Run a compression check.
the 77's upgrades - chuzie - 03-21-2011
Here is my troubleshooting tree....
Poor High Speed Operation
Low fuel pump volume Faulty pump or restricted fuel lines or filters
Poor MAP sensor signal Test MAP sensor, vacuum hose and wiring
Poor Oxygen sensor signal Test for shorted or open sensor or circuit
Open coolant temperature Test sensor and sensor circuit wiring
Faulty ignition operation Check wires for cracks or poor connections,
test secondary voltage with oscilloscope
Contaminated fuel Test fuel for water or alcohol
Intermittent ECM ground Test ECM ground connection for resistance
Restricted air cleaner Replace air cleaner
Restricted exhaust system Test for exhaust manifold back pressure
Poor MAF sensor signal Check leakage between sensor and manifold
Poor VSS signal If tester for ALCL hook-up is available check that VSS
reading matches speedometer
Have you run another self test on the EEC?
the 77's upgrades - blazinchuck - 03-21-2011
ok...KOER(12,21,94,44,33) KOEO(81,82,85,84)
l swapped out the MAF and fuel pump relays with new replays. i cant slowly bring engine up in rpms...but can not stab the throttle