Entire truck shakes between 1000 and 1500 rpm

Joe Martin · Jul 7, 2018

I have a factory turbo 7.3 idi and the entire truck shakes between 1000 and 1500 rpms. It feels like its loping at idle and clears up above 1500 rpm. No smoke. Cracked fuel lines at each injector and idle changed on all of them. Going to have injectors pop tested by diesel shop, just wondering if I'm going in the right direction or not. Thought it was the harmonic balance but not noticing any wobble in it. Any assistance would be appreciated.

Clb · Jul 7, 2018

Could be
Timing
Injectors doubtful
Ip big possibility inj.lines
Fuel psi
Fubared block\rotating assy.
Flex plate\dmf
start cheap n easy
timing
chech clutch\flywheel
pop test

chris142 · Jul 7, 2018

I drove a customers truck that acted like that. It had a few new injectors and a few old ones. I'm guessing that the injectors we're popping all over the place.

gerlbaum · Jul 7, 2018

Had something similar. Lots of people complain about it when the temps hit above 105 here in phx. Separate tire tread. Had a bubble that really shook the truck.

Clb · Jul 7, 2018

Hmm, op! stationary or on the fly???
last tire separation I had it got worse with speed.
Of course nothing stationary.

Schluchtenflitzer · Jul 10, 2018

I have the same with my van (E350 4x4 with 7.3 powerstroke). I never fellt it while driving. One time by accident I checked charging system and idle it up a bit. At 1200 to 1400 it shakes like hell. You only feel it sitting inside. As I said while driving I never fell something. I have no idea if this was since I got the van but I could not found any thing and drive like this now since about 30000 mls.....

79jasper · Jul 10, 2018

Schluchtenflitzer said:
I have the same with my van (E350 4x4 with 7.3 powerstroke). I never fellt it while driving. One time by accident I checked charging system and idle it up a bit. At 1200 to 1400 it shakes like hell. You only feel it sitting inside. As I said while driving I never fell something. I have no idea if this was since I got the van but I could not found any thing and drive like this now since about 30000 mls.....

The early powerstrokes are just like that. No real rhyme or reason.

Sent from my SM-G892A using Tapatalk

IDIBRONCO · Jul 10, 2018

Sometimes they don't even sound like they're running smoothly.

Joe Martin · Jul 18, 2018

Replaced all 8 eight injectors after being told 5 were bad. Problem is not as bad but still there. What to try next.

hesutton · Jul 20, 2018

Joe Martin said:
Replaced all 8 eight injectors after being told 5 were bad. Problem is not as bad but still there. What to try next.

What transmission?
As asked before.... just notice this when driving, or will it happen when rev'ing in the driveway too?

Heath

Joe Martin · Jul 20, 2018

Happens revving in the driveway and driving. Has e4od automatic.

jbm6900 · Jul 21, 2018

Also, The factory turbo idi used different balancer & flywheels. Jus throwin that out there. Some parts changers don't know difference. Factory auto flywheels very hard to find. I had bad ring gear, couldn't locate new f/w but I did find a ring gear. Cut off bad gear, expanded new gear & rewelded same spots & length welds doing my best to retain balance.
94 factory turbo idi
Banks sidewinder? exhaust-no longer avail
Turned up IP
13,000 lb service trk no computer except e4od-dammit
Good power & acceleration

hesutton · Jul 23, 2018

Have you pulled the inspection cover off the trans to see if there is any issues? Flexplate?

Heath

laserjock · Jul 23, 2018

hesutton said:
What transmission?
As asked before.... just notice this when driving, or will it happen when rev'ing in the driveway too?

Heath

Where did you get your injectors? You said it’s better but still shakes... so that says to me something you did had an effect. May not be the effect you want but an effect.

Entire truck shakes between 1000 and 1500 rpm

Joe Martin

Registered User

Clb

Another old truck

chris142

Full Access Member

gerlbaum

Full Access Member

Clb

Another old truck

Schluchtenflitzer

Registered User

79jasper

Chickenhawk

IDIBRONCO

IDIBRONCO

Joe Martin

Registered User

hesutton

The Anti-Anderson

Joe Martin

Registered User

jbm6900

Registered User

hesutton

The Anti-Anderson

laserjock

Almost there...

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