95 to 97 pcm question
#1
95 to 97 pcm question
Hey all,
I have been doing a lot of research on this site lately and I must say it has been a big help. Lots of good info.
Anyways, this is my story. I have a 97 neon highline with an automatic and the SOHC 2 litre. The motor leaks all its fluids and has a wicked clack coming from the head. I decided to go after a vehicle at the local scrap yard auction and won a 95 neon with the same motor and the 5 speed manual. I have just finished pulling the motor and transaxle out of the 97 and am in the process of slowly preping the 95 for the same procedure. The motor and transaxle work great on the 95 (and it came with new brakes and tie-rods as a bonus) and I plan on putting it in my 97. Here is my concern. The PCM on the 95 looks nothing like the PCM on the 97 and has diffrent connections. Will the PCM from the 97 still work happily with the motor from the 95? or should I be searching for adapters to get the 95 into the 97?
Sorry for the long post. This is the first time I have worked on a newer motor like this, let alone a fwd.
Regards,
Mike
I have been doing a lot of research on this site lately and I must say it has been a big help. Lots of good info.
Anyways, this is my story. I have a 97 neon highline with an automatic and the SOHC 2 litre. The motor leaks all its fluids and has a wicked clack coming from the head. I decided to go after a vehicle at the local scrap yard auction and won a 95 neon with the same motor and the 5 speed manual. I have just finished pulling the motor and transaxle out of the 97 and am in the process of slowly preping the 95 for the same procedure. The motor and transaxle work great on the 95 (and it came with new brakes and tie-rods as a bonus) and I plan on putting it in my 97. Here is my concern. The PCM on the 95 looks nothing like the PCM on the 97 and has diffrent connections. Will the PCM from the 97 still work happily with the motor from the 95? or should I be searching for adapters to get the 95 into the 97?
Sorry for the long post. This is the first time I have worked on a newer motor like this, let alone a fwd.
Regards,
Mike
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#5
RE: 95 to 97 pcm question
To answer your question:
Yes, the PCM from the '97 will run the '95 motor. However, since the '97 PCM is for an auto, and it appears you are putting in a 5-speed, then you will get a Check Engine Light for the "missing" torque converter. This is easily fixed by using any '97-'99 5-speed PCM, which can be found for under $30 most of the time (PM me for links to try), or the above mentioned Mopar unit for $150ish used. You really don't need to go through the hassle of either swapping out a wiring harness or cutting and splicing for a different PCM. Yuck...
Many of the sensors/componenets (like fuel injectors) on the '95 will have different connectors. You can either cut and splice pigtails, or just swap out sensors/components. Minor issue.
I don't know why everyone thinks the '95 engine is so different... Just because the PCM is shaped differently doesn't mean it's a completely bastardized engine setup. The '95 SOHC head has a more aggressive cam, provisions for the catch-can style PCV setup, and the valve cover has the oil inlet on the opposite side (and no extra nipple for the PCV). The block is the same, except the main bearing tang slots are different (have to grind new ones if it comes to replacing them, they don't make the old style bearing anymore). That's it. Oh, steel oil pan instead of aluminum... Umm, coilpack mounting is on a bracket instead of the valve cover. Pretty sure that's it... Nothing that would make any other 1st gen PCM blink.
Best of luck!
Yes, the PCM from the '97 will run the '95 motor. However, since the '97 PCM is for an auto, and it appears you are putting in a 5-speed, then you will get a Check Engine Light for the "missing" torque converter. This is easily fixed by using any '97-'99 5-speed PCM, which can be found for under $30 most of the time (PM me for links to try), or the above mentioned Mopar unit for $150ish used. You really don't need to go through the hassle of either swapping out a wiring harness or cutting and splicing for a different PCM. Yuck...
Many of the sensors/componenets (like fuel injectors) on the '95 will have different connectors. You can either cut and splice pigtails, or just swap out sensors/components. Minor issue.
I don't know why everyone thinks the '95 engine is so different... Just because the PCM is shaped differently doesn't mean it's a completely bastardized engine setup. The '95 SOHC head has a more aggressive cam, provisions for the catch-can style PCV setup, and the valve cover has the oil inlet on the opposite side (and no extra nipple for the PCV). The block is the same, except the main bearing tang slots are different (have to grind new ones if it comes to replacing them, they don't make the old style bearing anymore). That's it. Oh, steel oil pan instead of aluminum... Umm, coilpack mounting is on a bracket instead of the valve cover. Pretty sure that's it... Nothing that would make any other 1st gen PCM blink.
Best of luck!
#6
RE: 95 to 97 pcm question
ORIGINAL: RadarLove
I don't know why everyone thinks the '95 engine is so different...
I don't know why everyone thinks the '95 engine is so different...
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