Snap On MT 2500
Thread Starter
CF Veteran
Joined: Dec 2011
Posts: 1,777
Likes: 22
From: PA KOTUFU!
Year: 1998
Engine: 4.0L 162,000
I am thinking about buying one. I understand that they were it in the 90's. I want to use it on my Gen2 XJ's, '96-01. In particular I want to be able to read the 'fuel or cam sync' and be able to make adjustments.
My current scan tool will not read this fuel/cam sync.
Has anyone used one? Any particular and details?
My current scan tool will not read this fuel/cam sync.
Has anyone used one? Any particular and details?
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
I have one I use on my renix it gives me real time data , but cant find any thing on what are acceptable ranges for them. Unless some one else chimes in might try search it see what you can find.
Senior Member

Joined: May 2012
Posts: 925
Likes: 5
From: Fort Erie, CANADA
Year: 1987
Model: Cherokee
Engine: 4.0
I have a MT-2500 for my Renix. I looked in the Domestic Vehicle Parameter Definition Manual for information.
The primary module I have goes to 1999. The manual shows these parameters that I think are what you are looking for:
Current Sync: range (OK/LOST): This parameter indicates whether the camshaft position (CMP) and crankshaft position (CKP) sensor signals are synchronous. It reads OK if the signals are synchronous and reads LOST if they are not.
Fuel Sync: Range (+/-): On 1987-90 4.0 MPI engines, a synchronous signal generator located in the distributor send this fuel sync signal to the PCM. The PCM uses this signal in conjunction with the engine speed sensor signal to maintain the proper fuel injector firing order. When the engine is running, the display should be switching steadily between a + and negative reading.
Hope this helps. I think these are great tools.
The primary module I have goes to 1999. The manual shows these parameters that I think are what you are looking for:
Current Sync: range (OK/LOST): This parameter indicates whether the camshaft position (CMP) and crankshaft position (CKP) sensor signals are synchronous. It reads OK if the signals are synchronous and reads LOST if they are not.
Fuel Sync: Range (+/-): On 1987-90 4.0 MPI engines, a synchronous signal generator located in the distributor send this fuel sync signal to the PCM. The PCM uses this signal in conjunction with the engine speed sensor signal to maintain the proper fuel injector firing order. When the engine is running, the display should be switching steadily between a + and negative reading.
Hope this helps. I think these are great tools.
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Senior Member

Joined: May 2012
Posts: 925
Likes: 5
From: Fort Erie, CANADA
Year: 1987
Model: Cherokee
Engine: 4.0
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CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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