88 Bronco II suddenly dies while driving
#1
88 Bronco II suddenly dies while driving
On going problem with my 88 BII 2.9 2WD
Cranks up fine. Runs fine. Take off and a mile down the street it dies. After it dies and you try to crank it you cannot hear the fuel pump come on as you usually can. Let it set for an hour or two and it will crank right up and run till it decides to stop. It only seems to do this while going down the road. I've treid to simulate this at the house and I cannot.
I've changed Fuel pump relay, ECC relay. Both in-tank and in-frame fuel pumps. Ignition coils and the control modual and stattor. Any ideas are welcome.
Cranks up fine. Runs fine. Take off and a mile down the street it dies. After it dies and you try to crank it you cannot hear the fuel pump come on as you usually can. Let it set for an hour or two and it will crank right up and run till it decides to stop. It only seems to do this while going down the road. I've treid to simulate this at the house and I cannot.
I've changed Fuel pump relay, ECC relay. Both in-tank and in-frame fuel pumps. Ignition coils and the control modual and stattor. Any ideas are welcome.
#5
EEC relay
Had a similar problem in my 89 BII. Turned out to be the EEC relay had a broken wire internally that would sometime make contact & than would not. Replaced the coil & checked out the module on the the distributor. Shot some gas thru a vacum port into the plennium and she started for a second. Checked the wireing to the fuel pump an no current. Checked the fuses & they were ok. Then checked the fuel pump relay & EEC relay against a new one using an ohm meter.Found opening on EEC relay . Moved the EEC relay & had contact & could hear a loose or broken wire on the inside. My 2 cents of advice.
#6
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#8
#9
Check the Inertia Switch.
Originally Posted by galenabill
No fuel pressure at all when it stalls. I do have spark. You cannot hear the fuel pump when trying to crank it during the stalls
After a lot of testing I finally traced it down to a defective inertia switch.
I replaced the switch about six months ago and haven't had any trouble.
Another thing to look at is the connector at the fuel tank.
I've had trouble with that connector on several Bronco's.
Good luck.
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