1999 - 2003 7.3L Power Stroke Diesel

Sponsored by:

compression test....fuses?

Reply Subscribe

Search this Thread

Old

Apr 20, 2024 | 12:43 PM

#1

wwracer

Thread Starter

|

Cross-Country

Joined: Oct 2011

Posts: 51

Likes: 5

From: WILLOW AK

compression test....fuses?

I lost a cylinder on my 99 7.3 this past winter, looking to do a compression test today before I swap it out. Any fuses to pull to keep current draw to a minimum during the test?

Reply

Old

Apr 20, 2024 | 12:57 PM

#2

cleatus12r

Butt-Head

Joined: Apr 2004

Posts: 9,406

Likes: 2,895

From: Reed Point, MT

Quote:

Originally Posted by wwracer

I lost a cylinder on my 99 7.3 this past winter, looking to do a compression test today before I swap it out. Any fuses to pull to keep current draw to a minimum during the test?

Just make sure the transmission is in neutral or park and use a jumper wire on the fender mounted starter relay. Nothing else has to be on.

If you must use the key switch, pull the PCM diode from the underhood fuse box. This will keep the fuel pump and glow plugs from being energized.

Reply

Old

Apr 20, 2024 | 07:25 PM

#3

wwracer

Thread Starter

|

Cross-Country

Joined: Oct 2011

Posts: 51

Likes: 5

From: WILLOW AK

Key off....DUH... Geez I'm asking some dumb questions lately

Reply

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

7.3 misfire with compression results

99f350cclb

1999 - 2003 7.3L Power Stroke Diesel

22

Dec 17, 2021 11:42 AM

Compression test

therigwelder

1994.5 - 1997 7.3L Power Stroke Diesel

14

Dec 30, 2016 08:56 AM

COMPRESSION TEST

RANGER589

FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)

8

Sep 3, 2010 10:02 AM

Compression Test

Border3899

Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)

11

Dec 18, 2002 01:33 PM

Reply Share

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 08:10 PM.