Ikesbucs
New Member
- Joined
- May 26, 2022
- Messages
- 6
- Reaction score
- 2
- City, State
- Ketchikan, Alaska
- Year, Model & Trim Level
- 1987 Bronco II EddieBauer
Bronco II 1987 2.9 electronic fuel injection
Hey guys! So my bronco has ran half of the 3 years I’ve had it it’s now cranking but not starting. I have a list of everything I’ve fixed on it below. So Today I tried spraying a crap ton of starting fluid in air intake and the intake manifold and no start so then I moved onto spark plugs I replaced a spark plug and tested it by putting negative jumper cable from spark plug to negative on battery and had my wife start it. And there was no spark so I tried another spark plug and same thing replaced it with new one same thing. Tommorow I’m buying fuel pressure gauge to double check I have fuel pressure I just changed my tank fuel pump last week and I don’t hear it come on every time I start it ( I know it won’t come on if the system is already pressurized right?) anyway I’m thinking it might be fuel pump relay which I’m having very Hard time identifying the wiring schematic to tell which one it it is out of the four relays if I was confident my low pressure fuel pump was working then I would move on to distributor cover rotor spark plug wires etc but I can’t yet until I know my fuel pump is working I don’t even know what psi I should see when I attach fuel pressure gauge to a schrader valve on fuel rail I’m lost in the sauce and I suck at troubleshoooting. also Haynes manual says to relieve the fuel pressure you just disconnect inertia switch and then crank it for 15-20 seconds and the button will pop up but the button never pops up when I try that is it stuck and that’s why fuel isn’t pumping ?
Things I’ve fixed below
Fuel Filter
In-line fuel pump
Low pressure fuel pump
Starter
Radiator
Fuel injector o rings and cleaned injectors
Valve cover gaskets and cleaned covers
UPDATE She finally turned over! I just started thinking about how I didn’t ever even look at the eec/ecm (I don’t really know the difference)anyway the point is I changed the relay with the brown connection ( I also changed the fuel pump relay with green connection but that didn’t help it was already working now I know! )I changed the brown eec/ecm relay then I turned the key to on and heard the fuel pump prime and she started !! I didn’t even have to change the distributor cap rotor or spark plug wires I still will though it was literally the ecm/eec relay
Super excited BUT she is doing the same thing she has done for three years now that’s it’s running. She runs for 15/20 minutes then this ticking sound gradually gets louder and the engine kind of sounds like it’s bogging when I change gears and like kind of bogging when driving in 3rd going 25 mph so the ticking gets louder (I can’t tell if the clicking/ticking sound is from the lifters or the distributor) then as the ticking gets louder the oil light starts flickering and it seems to start bogging even more but she is running so awesome! Thanks for all your help 410
Hey guys! So my bronco has ran half of the 3 years I’ve had it it’s now cranking but not starting. I have a list of everything I’ve fixed on it below. So Today I tried spraying a crap ton of starting fluid in air intake and the intake manifold and no start so then I moved onto spark plugs I replaced a spark plug and tested it by putting negative jumper cable from spark plug to negative on battery and had my wife start it. And there was no spark so I tried another spark plug and same thing replaced it with new one same thing. Tommorow I’m buying fuel pressure gauge to double check I have fuel pressure I just changed my tank fuel pump last week and I don’t hear it come on every time I start it ( I know it won’t come on if the system is already pressurized right?) anyway I’m thinking it might be fuel pump relay which I’m having very Hard time identifying the wiring schematic to tell which one it it is out of the four relays if I was confident my low pressure fuel pump was working then I would move on to distributor cover rotor spark plug wires etc but I can’t yet until I know my fuel pump is working I don’t even know what psi I should see when I attach fuel pressure gauge to a schrader valve on fuel rail I’m lost in the sauce and I suck at troubleshoooting. also Haynes manual says to relieve the fuel pressure you just disconnect inertia switch and then crank it for 15-20 seconds and the button will pop up but the button never pops up when I try that is it stuck and that’s why fuel isn’t pumping ?
Things I’ve fixed below
Fuel Filter
In-line fuel pump
Low pressure fuel pump
Starter
Radiator
Fuel injector o rings and cleaned injectors
Valve cover gaskets and cleaned covers
UPDATE She finally turned over! I just started thinking about how I didn’t ever even look at the eec/ecm (I don’t really know the difference)anyway the point is I changed the relay with the brown connection ( I also changed the fuel pump relay with green connection but that didn’t help it was already working now I know! )I changed the brown eec/ecm relay then I turned the key to on and heard the fuel pump prime and she started !! I didn’t even have to change the distributor cap rotor or spark plug wires I still will though it was literally the ecm/eec relay
Super excited BUT she is doing the same thing she has done for three years now that’s it’s running. She runs for 15/20 minutes then this ticking sound gradually gets louder and the engine kind of sounds like it’s bogging when I change gears and like kind of bogging when driving in 3rd going 25 mph so the ticking gets louder (I can’t tell if the clicking/ticking sound is from the lifters or the distributor) then as the ticking gets louder the oil light starts flickering and it seems to start bogging even more but she is running so awesome! Thanks for all your help 410