Fredrickson
Full Access Member
Finally got around to taking the truck out after the last problematic run I posted about.
This time I was driving during the day, without rain, and with the bad injector replaced.
I googled the issue I am having, and some results point to the engine, others say torque converter.
VEHICLE: '94 7.3 IDI N/A, E4OD in an E350 ambulance, 245k miles, gvw 10,500
SYMPTOMS:
Starts fine, goes through the gears, but when it gets to overdrive, if on a hill/incline or has a load on the engine, it feels like there is a sputter/stutter and appears to lose some power. The truck shakes in time with the engine. (No extra/new noises when this happens)
If I hit the O/D switch on the gear shift to disable overdrive.. it downshifts, revs higher, and the issue goes away.
If I am on level ground or going down hill, O/D behaves and I can get up to highway speeds.
I didn't notice this "stutter" if I load up third gear.
I also noticed the volt meter (not the basic dash gauge...an aftermarket one) would bounce around.. drop into the 8-10 volt range and go back up, and the ammeter would dip in to the discharge range when the sputtering was happening, and go back to normal if I disengaged O/D.
The speedometer needle would wiggle a bit as well, even though the speed was fairly constant. 45mph-ish
I drove it 40 miles (mix of local and interstate) to drop it off at a shop yesterday to get my state inspection and have the timing checked while it was there.
I forgot to do the brake test to disengage the T/C before I left it.. so I am not sure if that would have shown me anything.
(The transmission has a deep pan on it, and the fluid/filter has maybe 5000 miles on it.)
Many of the google results describe the same problems, but are running gas engines, and blame spark plugs, wires, cap, rotor, or even a blocked catalytic converter.
Other results say the t/c and this happens with high mile EO4D's.
I do not know if this is the original trans, a rebuilt or a swap.
The O/D light does not flash or show any signs of problems.
Thoughts? Opinions? Things to check?
Thanks!
This time I was driving during the day, without rain, and with the bad injector replaced.
I googled the issue I am having, and some results point to the engine, others say torque converter.
VEHICLE: '94 7.3 IDI N/A, E4OD in an E350 ambulance, 245k miles, gvw 10,500
SYMPTOMS:
Starts fine, goes through the gears, but when it gets to overdrive, if on a hill/incline or has a load on the engine, it feels like there is a sputter/stutter and appears to lose some power. The truck shakes in time with the engine. (No extra/new noises when this happens)
If I hit the O/D switch on the gear shift to disable overdrive.. it downshifts, revs higher, and the issue goes away.
If I am on level ground or going down hill, O/D behaves and I can get up to highway speeds.
I didn't notice this "stutter" if I load up third gear.
I also noticed the volt meter (not the basic dash gauge...an aftermarket one) would bounce around.. drop into the 8-10 volt range and go back up, and the ammeter would dip in to the discharge range when the sputtering was happening, and go back to normal if I disengaged O/D.
The speedometer needle would wiggle a bit as well, even though the speed was fairly constant. 45mph-ish
I drove it 40 miles (mix of local and interstate) to drop it off at a shop yesterday to get my state inspection and have the timing checked while it was there.
I forgot to do the brake test to disengage the T/C before I left it.. so I am not sure if that would have shown me anything.
(The transmission has a deep pan on it, and the fluid/filter has maybe 5000 miles on it.)
Many of the google results describe the same problems, but are running gas engines, and blame spark plugs, wires, cap, rotor, or even a blocked catalytic converter.
Other results say the t/c and this happens with high mile EO4D's.
I do not know if this is the original trans, a rebuilt or a swap.
The O/D light does not flash or show any signs of problems.
Thoughts? Opinions? Things to check?
Thanks!