Driving down interstate 10 at 70mph everything running well. Engine stopped running, just like turning off ignition. Coasted to side of road. Let it set for a while then tried to start. Would not even fire a cylinder. Long Story- but 3 weeks later still wont start. replaced or checked the following: Spark Plugs, Rotor, dist cap, whole new distributer, ECU with new prom, coil, removed front of engine checked timing chain (ok). Still will not fire let alone start. checked 12 volts to coil (good). No leakage or unusual indication from engine when it quit.... Baffeled 50 yr aviation Mechanic w/IA 3 other mechs with yrs of experence. Diesel,Auto and Aviation mech Baffeled. Any help appreciated...

There should be a fuel pump relay mounted to the right side of the engine on a reinforcing strut. This supplies power to the fuel pump for a few seconds to charge the fuel line. Can you hear the fuel pump running? Without turning to start, turn ignition switch to on, listen closely for relay to drop out. If you hear it, then not issue.Next is the oil pressure gauge. The fuel pump operation goes through the oil pressure gauge. If the engine does not get oil pressure, the fuel pump does not operate.Remove air cleaner, check to see if the injectors are spraying fuel into the intake manifold.Have you checked the fuel filter or replaced it?

Yes Compression good on all Cylinders. Fuel pump is suppling fuel to throttle bodies.

Did you try starter fluid just to make sure it isn't a fuel issue?

Sounds like icm took a dump or ignition switch lost its ground

1994 Bounder Fleetwood 454 Engine-Start Problems!

Big_Katuna
Explorer II
Aug 21, 2018
Swapping ignition switches would tell the tale.

If not the switch, a pin pushed out of a connector or corroded pin or bad crimp.
SnoopyDP
Explorer
Aug 21, 2018
TY Cougar and Katuna I am leaning toward a wire problem now. (intermitten I Think)
SnoopyDP
Explorer
Aug 21, 2018
I believe when you engage the starter with the key it causes the PCM to Advance the ignition timing, anyway as my post went on as I adjusted the Distributor to a more advance position it would stay running at 800-1000rpm but if i let off throttle it quite... Anyway we put new switch module in it didn't make any difference.
MEXICOWANDERER
Explorer
Aug 20, 2018
Ignition (1) Is to make the engine ignition operate

Ignition (2) Is to make the accessories operate. They go off when the engine is cranked.

Is there something wrong with connecting a 12 volt pilot light to various ignition feed wires "IN", like to the distributor, the EFI module, fuel pump, etc?

OP do you have the factory wiring diagrams?

SHARE YOUR GRIEF

https://www.youtube.com/watch?v=Rpmt0FzaH9M
Big_Katuna
Explorer II
Aug 20, 2018
72cougarxr7 wrote:
The fact that it stayed running while cranking really leads me to think the ignition switch is your issue.

Me too. Or a bad wire/connection.
72cougarxr7
Explorer
Aug 20, 2018
The fact that it stayed running while cranking really leads me to think the ignition switch is your issue.
SnoopyDP
Explorer
Aug 19, 2018
But I am like you thats how it is acting like the Cam or Crank position sensor is having a problem. Intermitten or changing.. This is a brand new distributor with rotor cap and ICM new... Acted same way with old distributor!!!
SnoopyDP
Explorer
Aug 19, 2018
The only thing that I'm aware of is the Ignition Control Module in the distributor tells the PCM the position of Cam and Crank! There is no other pick up that senses Cam or Crank...
enblethen
Nomad
Aug 19, 2018
Double checked, No crank position sensor.
Handled by distributor shaft and timing chain.
SnoopyDP
Explorer
Aug 19, 2018
This engine just came as a LongBlock from ProMar Engines in New Jersey. With all due respect I checked the old core return even took new Timming chain and gears off before shipping it had no crank position sensor.. Checked this engine no crank position sensor. Apparantly the 454 engine 91-94 engines 4-bolt mains has no crank position sensor.

Forum Discussion

1994 Bounder Fleetwood 454 Engine-Start Problems!

About Technical Issues

Related Content

Fleetwood Angler wiring

Cummins engine barely starts

Fleetwood Flair 1993 class engine problems

Clicking sound when engine starting

Engine Starting Battery