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jd
Dodge Dakota
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11/02/2003
14:12:50
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 Subject: OBD
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Message:
heres a question when did dodge start puttin OBD or OBD 2 in the dakotas
i have a 90 dak 4x4 with a 3.9 and 400000 k this engine sux i recently got a 98 318 mag and realize i need a different ecm and want to know when the daks first had the 318 mag so i know what year ecm and engine bay wiring harness and if i need to wire in the diagnostics connector for OBD under the dash
any help will be greatly appriciated
jd
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help
Dodge Dakota
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11/02/2003
14:33:12
| RE: OBD
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Message:
http://www.obdii.com/background.html#Have
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gen1dak
Dodge Dakota
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11/02/2003
15:05:43
| RE: OBD
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Message:
Magnums hit the scene in 1992. OBDI ran through the '95 model. In 1996, under federal requirements, OBDII was fully in force by all auto makers. The intent was supposedly to get longer life of emissions equipment, but it really complicated things in the process. Your PCM choices are the '92-'95 years. If you hop up the 318, a 360 PCM for full size Rams is your PCM of choice, since the Dakotas didn't get 360's til later on.
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jd
Dodge Dakota
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11/02/2003
20:34:02
|  RE: OBD
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Message:
okay so now what are the differences in programming between the 318 and 360 pcm
also are there any differences between the 4x4 and 4x2 harness or pcm? and will i need to change or rewire the cab harness to add a diagnostics port
anny and all information is greatly appriciated thanx in advance
jd
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gen1dak
Dodge Dakota
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11/02/2003
21:30:44
| RE: OBD
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Message:
Getting into harness questions is a thin area for me. The 360 PCM is different only because it's programmed for the bigger engine. Mainly, it gives some headroom to support more engine mods without having to resort to a Mopar Performance PCM. Retain the stock ignition curve, run cheap gas...stuff like that. If you need the High Perf. PCM, you have to run premium. I doubt the harnesses are different between 2 and 4wd, but again, not 100% sure there. I haven't worked out the Magnum wiring in pre-Mag. truck deal, but you can probably splice into your existing setup. If I ever move to MPI, I'm gonna try like heck to keep it to a splicing deal.
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jd
Dodge Dakota
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11/03/2003
11:01:45
| RE: OBD
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Message:
i had my A500 tranny rebuilt and a shift kit installed now my question is were daks with a 318 magnum avaliable with the A500 tranny in other words will a magnum pcm control the A500 that i have or am i gonna have ta run toggle switches for overdrive and TC lockup?
also when i had the tranny rebuilt they also rebuilt the torque converter for the 3.9 am i gonna have to change the torque converter for the 318?
thanx again
jd
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gen1dak
Dodge Dakota
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11/04/2003
03:45:02
| RE: OBD
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The Magnum computers '92-'95 will operate the A500- all functions, no problem. Also, according to the Mopar Performance catalog, the TC from the 3.9 will also work with the 5.2, so you're good to go.
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jd
Dodge Dakota
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11/04/2003
11:02:27
| RE: OBD
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Message:
hey this is really cool you guys know your $hit pretty good
heres another one does the magnum pcm utilize two oxygen sensors unlike the one that my truck uses currently and if so how hard will it be to buy one of them boxes that fools the pcm, here in alberta, or would anybody hapen to have a scematic diagram for one that i could build my self? oh yea this is cuz i hate catalytic converters......
again thanx
jd
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jd
Dodge Dakota
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11/08/2003
03:17:06
| RE: OBD
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Message:
any one got any good ideas left
save a tree eat a beaver
canadian eh
jd
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gen1dak
Dodge Dakota
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11/08/2003
18:34:44
| RE: OBD
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Message:
'92-'95 used one sensor. OBDII ('96 and up) uses an upstream O2 sensor, and a downstream O2 sensor, so stick with the '92-'95 Magnum PCM.
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Iron Mike
Dodge Dakota
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11/09/2003
23:29:29
|  RE: OBD
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Message:
If you are putting a magnium in a pre mag truck you will need a magnium wiring harness from the bulkhead connector forward and you will also need to change the fuel pump to a magnium one. It runs at a different pressure level to support injectors vice throttle body that comes with the premag engines.
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