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post #1 of 28 (permalink) Old 03-19-2012, 09:36 AM Thread Starter
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something funny going on

ok so today when i was in stop and go traffic i put the car in second to keep from constantly shifting from 1 to 2. so when i started to move forward the car started to vibrate until i hit maybe 7-10 mph. what do you guys think this could be?

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #2 of 28 (permalink) Old 03-19-2012, 09:53 AM
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Maybe a motor mount? I could be wrong but I would look at those first

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post #3 of 28 (permalink) Old 03-19-2012, 11:37 AM
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Probably the torque converter shuttering. Why are you manually shifting your auto? What else is wrong with the car?
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post #4 of 28 (permalink) Old 03-19-2012, 12:20 PM Thread Starter
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nothing wrong at all just hate having to make 7 or 8 shifts when i can just keep it in 2nd. just my thinking but figured that keeping it from shifting more than it has to might help with wear and tear. I've gotten the jmod and a tune. another thing is that it doesn't do it all the time

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d

Last edited by swampt420; 03-19-2012 at 03:04 PM.
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post #5 of 28 (permalink) Old 03-19-2012, 07:49 PM
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Quote:
Originally Posted by onelapduster View Post
Probably the torque converter shuttering. Why are you manually shifting your auto? What else is wrong with the car?
+1 My guess from available info is torque converter shutter, too.

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post #6 of 28 (permalink) Old 03-19-2012, 08:18 PM
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My thought is also torque converter shudder.

BTW (I may be mistaken) but I think I read a few times that keeping the car in manual 2nd all the time isn't a good idea because of something related to higher than normal line pressures.

-Brandon
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post #7 of 28 (permalink) Old 03-19-2012, 08:24 PM
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Originally Posted by theterminator93 View Post
My thought is also torque converter shudder.

BTW (I may be mistaken) but I think I read a few times that keeping the car in manual 2nd all the time isn't a good idea because of something related to higher than normal line pressures.
Well, it's only common sense, taking off in 2nd all the time HAS to be harder on the tranny than 1st. Definitely more heat being generated by the torque converter since it is so hard to spin the tranny input shaft.

I'm just sayin'.....

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post #8 of 28 (permalink) Old 03-19-2012, 09:38 PM Thread Starter
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thanks for the info, i will stop keeping it in 2nd. but i have another question, the tune that i received from don makes first gear want to rev high before shifting sometimes. would it be all right to shift into 2nd from drive to make the shift sooner? and the car doesn't vibrate all the time actually only felt it twice in probley a months time and both times i was in 2nd should i be looking for a new TC or just keep an eye out for the car acting funny.

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #9 of 28 (permalink) Old 03-19-2012, 10:19 PM
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Quote:
Originally Posted by swampt420 View Post
thanks for the info, i will stop keeping it in 2nd. but i have another question, the tune that i received from don makes first gear want to rev high before shifting sometimes. would it be all right to shift into 2nd from drive to make the shift sooner? and the car doesn't vibrate all the time actually only felt it twice in probley a months time and both times i was in 2nd should i be looking for a new TC or just keep an eye out for the car acting funny.
Before I would start shopping for anything, I would get your car on a lift and look for something loose - ds bolts, tailshaft housing, u-joints, cv joints, suspension bushings, converter nuts, etc.

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post #10 of 28 (permalink) Old 03-19-2012, 10:42 PM Thread Starter
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dont have a lift but do have some ramp so i will look at tomorrow thanks for the advice. ill post what i find tomorrow

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #11 of 28 (permalink) Old 03-20-2012, 06:16 AM
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Quote:
Originally Posted by swampt420 View Post
thanks for the info, i will stop keeping it in 2nd. but i have another question, the tune that i received from don makes first gear want to rev high before shifting sometimes. would it be all right to shift into 2nd from drive to make the shift sooner?
I'd drop him an e-mail and ask if he can lower the low throttle shift points so it feels more 'stock' at light throttles, but stays in performance mode when you get on it.

-Brandon
97 Laser Red Thunderbird LX 162k, Stage 2 4.6L 2v N/A | 300 BHP (255 RWHP, 290 RWTQ) | 13.95 @ 97.58 | Build details | Pics at the Lorain Assembly plant
98 Black Mark VIII 160k, stock daily driver
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Gone but not forgotten: 96 Mark VIII, 94 Cougar XR7, 93 Mark VIII

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post #12 of 28 (permalink) Old 03-20-2012, 08:03 AM Thread Starter
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if the tc is going bad could that cause ur car to stall when coming to a stop.

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #13 of 28 (permalink) Old 03-20-2012, 08:24 AM
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Quote:
Originally Posted by swampt420 View Post
if the tc is going bad could that cause ur car to stall when coming to a stop.
I have seen that happen, but on a GM, not a Ford.

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post #14 of 28 (permalink) Old 03-20-2012, 08:48 AM Thread Starter
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is there any way to test ur iac value

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #15 of 28 (permalink) Old 03-20-2012, 08:58 AM Thread Starter
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this is basically what has been happening. if i give the car some gas it wants to die when i come to a stop. if i drive average its fine.

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #16 of 28 (permalink) Old 03-20-2012, 12:19 PM
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I believe when you manually shift to 2nd it clamps the OD band down on the drum. The vib could be the OD band slipping and is probably toast. How many miles on the trans?

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post #17 of 28 (permalink) Old 03-20-2012, 12:48 PM Thread Starter
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170,000 but about 70,000 is highway miles. i just started manually shifting not even 2months ago.

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #18 of 28 (permalink) Old 03-20-2012, 02:05 PM
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More than likely the roller clutch is not holding and when it releases you are left in 1st gear, when it holds you get second. I don't know why so many people wnat to manually shift this transmission. If it doesn't shift the way ou want it to talk to a tuner, manual selection is only useful for holding range, not correcting shift patterns. For example in trucks when towing going down a big hill with a curve using manual second is easier on the truck than riding the brakes for all they are worth.
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post #19 of 28 (permalink) Old 03-20-2012, 02:36 PM Thread Starter
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thank you for info DD. do u think this is what's causing the car to stall sometimes?

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #20 of 28 (permalink) Old 03-20-2012, 03:02 PM
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The only time I have seen a converter and or transmission cause a car to stall is if it was destroyed.
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Please do not send me messages on forums they are too hard to keep up with and I don't check in very often anymore call me at 513 898-1580 or email me alan at dirtydogperformance.com
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post #21 of 28 (permalink) Old 03-20-2012, 03:24 PM Thread Starter
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well mine diffently isn't destroyed and has only made the vibration twice in a months time. im going to read up more on the search forms about the TC and shoot don a email about the shifting when i get off work, if i knew that it was so bad to manual shift i would have talked to him alot earlier about it. and as far as the whole stalling thing goes im going to clean the maf and since ive already cleaned the iacv im going to replace it. and see if that fixes the problem.

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #22 of 28 (permalink) Old 03-21-2012, 08:03 AM Thread Starter
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so i replaced the idle air control value and cleaned the maf but it didn't fix it.after i drove it for about 28 miles then it tried to cut off at a stop sign. and i noticed to day that if your just barley moving with your foot off the brake and no gas it jerks back and forth not neck snapping but diffently noticeable.

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #23 of 28 (permalink) Old 03-21-2012, 08:05 AM
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Does it run normally otherwise? Try driving it with the MAF unplugged. If the circuitry inside the MAF sensor is on its way out, no amount of cleaning will fix it.

-Brandon
97 Laser Red Thunderbird LX 162k, Stage 2 4.6L 2v N/A | 300 BHP (255 RWHP, 290 RWTQ) | 13.95 @ 97.58 | Build details | Pics at the Lorain Assembly plant
98 Black Mark VIII 160k, stock daily driver
07 Redfire Fusion V6 SEL 178k, for the wife
Gone but not forgotten: 96 Mark VIII, 94 Cougar XR7, 93 Mark VIII

TCCoA's resident pilot since 2014
Once you have tasted flight, you will walk the world with your eyes turned skyward, for there you have been and there you long to return. -Leonardo da Vinci
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post #24 of 28 (permalink) Old 03-21-2012, 09:19 AM Thread Starter
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yeah it drives perfect if ur not idling. ill drive around the parking lot when im on break. thanks for the info

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #25 of 28 (permalink) Old 03-21-2012, 09:23 AM Thread Starter
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question what exactly am i looking for when the maf is unpluged?

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d
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post #26 of 28 (permalink) Old 03-21-2012, 09:55 AM
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If the engine runs better with the MAF unplugged it either needs to be cleaned or replaced, if no change other than the fact you will throw a code for it being unplugged... then your looking elsewhere for the problem.

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post #27 of 28 (permalink) Old 03-21-2012, 12:38 PM Thread Starter
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ok guys i unplugged the maf and it did idle a little bit better but you cant drive the car at all with it unplugged. it coast a hell of alot better but as soon as you touch the gas peddle it starts booging and wants to shut off. but it does idle a little better.

1997 Thunderbird 4.6L
New paint on tops, Magnaflow high flow cat system and custom 2 - 2 1/2 Exhaust ,J-Mod and P.I. head and intake swap(performed by RobertP @ www.RobsTireAndAuto.com ) Steeda Underdrive Pulleys, Mark VIII TC, AEM dry flow air filter, Blacked out tail lights and custom painted headlights (performed by my wife) tuned by DON at http://www.lasotaracing.com/

waiting to hear theses kooks


http://www.cardomain.com/ride/391835...rd-lx-coupe-2d

Last edited by swampt420; 03-21-2012 at 12:44 PM.
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post #28 of 28 (permalink) Old 03-21-2012, 01:47 PM
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Probably needs a really good cleaning imo. Get a can of MAF sensor cleaner and your good to go. Should solve your problem.

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