PCM compatibility between '97 and '99?
#1
12-08-2018, 05:57 PM
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PCM compatibility between '97 and '99?
Hi, I'm new to the forum -- thanks in advance for your help. The 5.9L v8 engine in my 1997 B3500 seized three months ago and I'm now neck deep in swapping the seized engine out and replacing it with a 5.9L v8 out of a '99 Ram 3500 van. Can I use the PCM from the '97 with the newer engine, or do I need to get a different PCM? The three connectors do seem to fit, but I'm not sure that's conclusive evidence the '97 computer is compatible with the '99 engine. Anybody know offhand? Thank you!
#2
12-09-2018, 09:39 AM
#3
12-10-2018, 01:00 PM
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Thank you for this info! Would keeping the PCM from the 97 connected to the 99 engine prevent spark? I currently have no spark to the ignition coil and am trying to track down the cause.
Also would it not not be easier to get the 99-compatible PCM and hook that up rather than going through removing and replacing the intake manifold? Is there a reason not to do this? Thanks so much!
Also would it not not be easier to get the 99-compatible PCM and hook that up rather than going through removing and replacing the intake manifold? Is there a reason not to do this? Thanks so much!
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12-10-2018, 01:43 PM
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#6
12-10-2018, 06:37 PM
Thank you for this info! Would keeping the PCM from the 97 connected to the 99 engine prevent spark? I currently have no spark to the ignition coil and am trying to track down the cause.
Also would it not not be easier to get the 99-compatible PCM and hook that up rather than going through removing and replacing the intake manifold? Is there a reason not to do this? Thanks so much!
Also would it not not be easier to get the 99-compatible PCM and hook that up rather than going through removing and replacing the intake manifold? Is there a reason not to do this? Thanks so much!
That plenum thread in 2nd gen trucks IS good and reccomend reading as well as watch the video on the procedure, probably worth taking the time to do it now rather than later unless your name is Jim(me) and procrastinate on other folks good advise, lol
good luck, hope it's just something simple or overlooked
Last edited by JFloors; 12-10-2018 at 06:42 PM.
