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67 290 Flashomatic issue |
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jayramb
AMC Nut Joined: Aug/25/2009 Location: Bloomington, MN Status: Offline Points: 487 |
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Posted: Oct/09/2014 at 7:50pm |
I have the 290 V8 with Flash-O-matic, last year of the flash-o-matics, the 1967.
When I start the car and put in reverse, when cold blooded, the transmission just has whine and then descends as it wants to shift in reverse. So, I have to let the engine warm up for a bit, 2-3 minutes before it will shift. Am I on the verge of tranny breakdown? The fluid is pink as pink can be, synthetic, and isn't burnt, AND is at the proper level. Is it the vacuum regulator? Or vacuum leak? I haven't had it checked out yet by a mechanic. |
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Jayson Helenske
See my webiste! www.1967AMCRamblerRebel.weebly.com Current Cars: 1967 Rambler Rebel 770 290 V8 4-barrel and Paint - Marina Aqua. 1966 MARLIN 327 V8 4 barrel and Paint-Med. Cortez Aqua |
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Ken Doyle
AMC Nut Joined: Jun/19/2010 Location: Haledon NJ Status: Offline Points: 305 |
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Check rear band adjustment.
Ken D.
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Snotty
AMC Addicted Joined: Mar/28/2014 Location: Chico, CA Status: Offline Points: 1247 |
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What happens if you start it and put it in neutral for a few moments? Will it work well once you engage reverse after that?
I ask because what you describe is common with old Mopar transmissions. Start them in neutral, or put it in neutral right after starting and they will drive off with no problem. Stat them and put into reverse and you will wait for a few seconds. It's a problem with the torque converters and age. I've been starting my '70 Newport that way for years. Filter, flush and band adjustment made no difference. Of course your trans is not one from Mopar, but the same thing might be happening. Worth a check! |
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Son's car: '73 Gremlin X, 401, T-10, Mopar 8.75 rear with 3.23 sure grip. My car: '70 Newport Convertible, 440 automatic
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amc67rogue
AMC Addicted Joined: Nov/05/2008 Location: Phx. AZ. Status: Offline Points: 1578 |
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Fluid should be red not pink . You mentioned synthetic was that a question ? AFAIK all auto trans fluid is red.
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Keith Coggins 67Rogue X code
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16614 |
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If its pink, its got water, and rebuild time. The cooler in the radiator sprung a leak.....
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amc67rogue
AMC Addicted Joined: Nov/05/2008 Location: Phx. AZ. Status: Offline Points: 1578 |
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Keith Coggins 67Rogue X code
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67RogueX-Code
AMC Addicted Joined: Jan/21/2009 Location: Sylvania, Ohio Status: Offline Points: 1302 |
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...those didn't have cooling lines that ran to the radiator.
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Bob Wilcox
67RogueX-Code |
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401jim
Supporter of TheAMCForum Joined: Jan/07/2012 Location: Brunswick,Ohio Status: Offline Points: 793 |
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You may have a converter drain back issue.Just start car and put into neutral during warm up. Make sure you are behind the wheel to keep vehicle from rolling.It's a Borg Warner style trans. You mentioned Pink looking fluid. Should be bright red in color.Hope this helps....
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19692 |
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Not all the old BW trannys were air cooled. It may have lines going to the radiator even if it does have the air cooled converter -- the later models had the fittings for an additional fluid cooler for HD applications (such as towing). The air cooled models have a large opening in the bell on the right side.
If you have a liquid cooler (lines running to radiator) check the water level in the radiator often and make sure you're not losing some coolant. The synthetic fluid may be a lighter red than standard fluid though. If it looks like it just came from the bottle, obviously you're good to go. Adjustment of the rear band sounds like your best bet. The seal on the rear servo could also be leaking some, but I doubt it is leaking enough to worry about if it goes into reverse after warming up. You can do a lot to extend service life without a full rebuild. Pull the pan and valve body, thoroughly clean the VB, pull the servos and replace the seals, and replace the shift lever shaft and rear seal. If you ever pull the trans replace the front seal whether it needs it or not. A rebuilt torque converter would be a good thing, but if it's working good that's an expensive change -- I'd wait until a rebuild and change it. Most shops won't warranty a rebuilt trans with an old converter because the converter may have trash in it that will take out the newly rebuilt trans. |
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Frank Swygert
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