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A518- A500 Transmission control question #1643145 07/07/14 12:10 AM 07/07/14 12:10 AM
Joined: May 2004 Posts: 433 St.Clairsville Ohio EV2RUNNER OP mopar
EV2RUNNER OP mopar Joined: May 2004 Posts: 433 St.Clairsville Ohio	I have a 1990 B350 Van with a 360 and 4 speed auto,(Not sure what model as of yet.) I had a problem with the ECM and changed it out with one from a 1990 Dodge W250 with a 4 speed Manual Transmission.. The van started right up and shifted fine, just wouldn't go into overdrive. So I took it for a drive yesterday,I have no reverse, and it wont coast in neutral.. Would this have anything to do with changing the ECM? As I said the one I replaced it with was from a Manual Trans Truck, so Im figuring it has no transmission control capability since it was from a manual truck.. It may be a coincidence that it happened not long after changing ECM.. What are your thoughts? Thanks

Re: A518- A500 Transmission control question [Re: EV2RUNNER] #1643146 07/07/14 12:33 AM 07/07/14 12:33 AM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Yes, a manual trans ECU will not play well with an auto that needs the ECU to control the OD and torque converter lockup. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: A518- A500 Transmission control question [Re: Supercuda] #1643147 07/07/14 02:47 AM 07/07/14 02:47 AM
Joined: Oct 2005 Posts: 1,305 Lakewood, Colorado herkamer pro stock
herkamer pro stock Joined: Oct 2005 Posts: 1,305 Lakewood, Colorado	On a 1990 all the computer controls is overdrive and possibly lockup. 1st-3rd and reverse are still hydraulically controlled, exactly the same as a 727 or 904. It would run the 3 gears forward and reverse with no computer at all. You have bigger problems. Matt 69 Dart Swinger 340 83 W350, Megasquirted with 46RH Old news: 72 Demon street/race mobile Latest: 70 Duster backhalf car and even more

Re: A518- A500 Transmission control question [Re: herkamer] #1643148 07/07/14 02:59 AM 07/07/14 02:59 AM
Joined: Jan 2003 Posts: 32,943 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,943 Grand Prairie,Texas	Might be in limp mode because of the mismatched ecm.

Re: A518- A500 Transmission control question [Re: stumpy] #1643149 07/07/14 09:55 AM 07/07/14 09:55 AM
Joined: Mar 2007 Posts: 3,285 West Coast, USA jbc426 master
jbc426 master Joined: Mar 2007 Posts: 3,285 West Coast, USA	You can order the correct ECM from Solo Electronics in Florida. 1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)

Re: A518- A500 Transmission control question [Re: EV2RUNNER] #1643150 07/07/14 05:02 PM 07/07/14 05:02 PM
Joined: Jan 2003 Posts: 25,858 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,858 Rio Linda, CA	Does it try to drive forward in Neutral and lurch forward in Park? The INTERNET, the MISinformation superhighway

Re: A518- A500 Transmission control question [Re: EV2RUNNER] #1643151 07/07/14 10:51 PM 07/07/14 10:51 PM
Joined: Oct 2009 Posts: 276 Temecula, Ca. Z zzyzxpat enthusiast
zzyzxpat enthusiast Z Joined: Oct 2009 Posts: 276 Temecula, Ca.	1990 is not computer controlled with the exception of OD and the converter clutch. Unplug the connector at the trans and see if you still lose reverse. If so, its in the trans. Pat " The last official act of any goverment, is to loot the treasury" George Washington

Re: A518- A500 Transmission control question [Re: John_Kunkel] #1643152 07/07/14 11:36 PM 07/07/14 11:36 PM
Joined: May 2004 Posts: 433 St.Clairsville Ohio EV2RUNNER OP mopar
EV2RUNNER OP mopar Joined: May 2004 Posts: 433 St.Clairsville Ohio	Quote: Does it try to drive forward in Neutral and lurch forward in Park? Yes! That's exactly what it's doing John

Re: A518- A500 Transmission control question [Re: zzyzxpat] #1643153 07/07/14 11:39 PM 07/07/14 11:39 PM
Joined: May 2004 Posts: 433 St.Clairsville Ohio EV2RUNNER OP mopar
EV2RUNNER OP mopar Joined: May 2004 Posts: 433 St.Clairsville Ohio	Quote: 1990 is not computer controlled with the exception of OD and the converter clutch. Unplug the connector at the trans and see if you still lose reverse. If so, its in the trans. Pat Yea I tried that Pat,Still same..Im afraid it was just coincidence, and tranny may need rebuild

Re: A518- A500 Transmission control question [Re: zzyzxpat] #1643154 07/08/14 12:28 AM 07/08/14 12:28 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: 1990 is not computer controlled with the exception of OD and the converter clutch. Unplug the connector at the trans and see if you still lose reverse. If so, its in the trans. Pat It really should not make any difference about the overdrive/lockup connector being unplugged or not as the trans will still work normal just no overdrive or lockup if unhooked. But from what the OP just said and from what John asked him it sounds like welded clutches if it lurches in Park and does not have reverse. If clutches are welded trying to go forward it would just be in drive and reverse when in reverse and not move. I believe thats what John is going to tell him. Ron Last edited by 383man; 07/08/14 12:31 AM.

Re: A518- A500 Transmission control question [Re: 383man] #1643155 07/08/14 12:37 AM 07/08/14 12:37 AM
Joined: May 2004 Posts: 433 St.Clairsville Ohio EV2RUNNER OP mopar
EV2RUNNER OP mopar Joined: May 2004 Posts: 433 St.Clairsville Ohio	That's kinda what I was figuring, but I knew these had some electronics to them I was hoping maybe I would get lucky! Thanks for the info

Re: A518- A500 Transmission control question [Re: EV2RUNNER] #1643156 07/08/14 04:03 PM 07/08/14 04:03 PM
Joined: Jan 2003 Posts: 25,858 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,858 Rio Linda, CA	It's likely that the Bellville spring in the rear clutch has failed and allowed the piston to pop out of its bore and jam the clutch pack together. The INTERNET, the MISinformation superhighway

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