250 IDI governor?

Reply Subscribe

Thread Tools

Search this Thread

Feb 9, 2007 | 01:29 PM

250IDI-International

Thread Starter

New User

Joined: Feb 2007

Posts: 13

Likes: 0

250 IDI governor?

I'm a newby so forgive me if this is stupid. I just bought a 1993 f250 idi manual 5speed w/ 200,000mi. At around 70 mph my engine sounds like it is opening up or something. I can still go faster and it doesn't perform any different when I hear the noise. Is this the governor?

Should I be concerned?

Also, anyone use an Amsoil bypass filter system?

Feb 9, 2007 | 01:57 PM

bilder12

Posting Guru

Joined: Sep 2002

Posts: 1,897

Likes: 0

From: Northeastern Pa - USA

dont know what differential gearing you got there, but 70 is starting to get things tightened up. You might be hearing the cooling fan kicking in.
you also might want to start adding fuel additive to replace the sulfur content in the modern fuel. This will lube the internals of the injection pump and the injectors. Another additive is for the coolant, get some nalcool from caterpillar and stuff a small bottle in the radiator once a year. This will slow down cavitation erosion inside the block.

Feb 9, 2007 | 02:53 PM

tjc transport

i ain't rite

Joined: Mar 2005

Posts: 65,507

Likes: 5,563

From: Marlboro Mental Hospital.

the idi 7.3 Governor is set to 3300 rpm's. if your engine revs past 3300, your Governor is shot, and you will need a new injector pump soon

Feb 9, 2007 | 02:59 PM

250IDI-International

Thread Starter

New User

Joined: Feb 2007

Posts: 13

Likes: 0

Thanks for the feedback. Thinking about it, I think it may just be the fan cycling.

Feb 9, 2007 | 06:30 PM

whitefordaward

Senior User

Joined: Jan 2007

Posts: 175

Likes: 0

or you go get your self an aftermarket injector pump.couse mine will tag 3500 at about 100 on the freeway.

Mar 19, 2007 | 09:44 AM

250IDI-International

Thread Starter

New User

Joined: Feb 2007

Posts: 13

Likes: 0

Hey guys. I'm still having the noise issue on the highway. I've also just had to replace my serpentine belt and apparently, the truck had been burning through belts. Could it be my tentioner? How can I test it?

Also, I have a 4x2 ZF 5 speed with I believe Sterling 10.25" axle. Should I go with the Motorcraft synthetic ATF in the tranny or Royal Purple or similar? Also, what oil to use in the rear end?

Anyone live in Palm Beach County Florida and know of a fair priced diesel mechanic?

Thanks all.

Mar 19, 2007 | 10:18 AM

adephue

Freshman User

Joined: Jul 2004

Posts: 37

Likes: 0

Use a 15mm wrench to relieve the tension on the serpentine belt and take it off. Inspect the entire tensioner assembly for any back and forth play where the unit bolts on to the engine. The tensioner spring is bolted on with a Torx 50 (I think). The bolt holding on the pulley is reverse threaded.

When I bought my truck the tensioner unit was bad and I threw four belts in about a week and a half. The last belt grabbed my transmission cooler line and pulled it into the fan. After I replaced the tensioner assembly, no problems.