| From | Message |
steelerfans01
Dodge Dakota
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7/14/2004
11:16:44
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 Subject: hesitation
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Message:
I just swapped to a 50mm TB, and now there is a slight hesitation upon initial accelleration. Is this just the computer relearning or did I do something wrong? I reset the computer after the mod, and I have driven 150 miles.
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daffydak
GenIII
7/14/2004
12:34:42
| RE: hesitation
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Message:
50mm is too big... did you use a v8 tb, and remove the torque step? the biggest you should use on a 3.9L is 48mm (stock v8 tb unmodded) It might get a little better with more mileage, but i doubt it.
Dan
MOPAR=More Power!!
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steelerfans01
Dodge Dakota
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7/14/2004
12:57:31
|  RE: hesitation
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Message:
I installed a SICK 50MM that I bought from E-bay. I didn't remove the torque step.
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steelerfans01
Dodge Dakota
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7/14/2004
13:03:16
| RE: hesitation
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Message:
I also have the following mods: 180 T-stat, Accel brass cap and rotor, Autolight 3923's gapped to .40, 7mm Bosch wires, and homebrew w/K&N. Flowmaster super 40 on its way.
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daffydak
GenIII
7/14/2004
13:46:58
| RE: hesitation
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Message:
is the TB the only thing you did to cause the hesitation, or did you do a few mods at once??
pretty much everything i have heard says tat 50mm is too big for the 3.9L (unless you have a HOT 3.9L with headwork, supercharger, headers, high compression, etc etc..) larry should be able to help you more then I can, i'm just going off what i have heard (and the experience i had with my 98 3.9L) i no longer have it though :-)
Dan
MOPAR=More Power!!
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steelerfans01
Dodge Dakota
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7/14/2004
13:51:01
| RE: hesitation
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Message:
I installed the TB 2 weeks after changing the T-stat, plugs, wires, cap and rotor.
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?
Dodge Dakota
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7/14/2004
13:56:27
| RE: hesitation
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Message:
Possibility = Now you KNOW WHY it was on E-bay
??!!??
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steelerfans01
Dodge Dakota
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7/14/2004
13:58:46
| RE: hesitation
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Message:
The TB was brand new still in orig packaging.
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ozric
Dodge Dakota
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7/14/2004
14:19:15
| RE: hesitation
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Message:
50mm is big for a stock top v6. But I think without porting the intake manifold that 50mm will act like a 47mm anyway. I would check your TPS voltage and maybe do the IAT relocation to get some more advance. Try that and see... if you get no joy then maybe the TB is just too big.
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daffydak
GenIII
7/14/2004
14:20:12
| RE: hesitation
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Message:
yeah i looked at one on ebay, its WAY to much tb for the 3.9L... it looks good for the 5.2/5.9 though.. they removed the tq step and polished the heck out of it. maybe you can get a tb spacer thats around 47-48mm to act as a restrictor (reducer) plate...
just my .02
Dan
MOPAR=More Power!!
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ozric
Dodge Dakota
JOIN HERE
7/14/2004
14:31:46
| RE: hesitation
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Message:
I just bought a ported and poslished Sick 47mm for my 98 v6. I have never heard anything bad about them and for the price I could not pass it up. If every thing goes well .. I will have 2 stock v6 TB for sale.
I have new a MOPAR oem in the box right now if anyone wants it let me know, linkage type 3 - $50.00
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steelerfans01
Dodge Dakota
JOIN HERE
7/14/2004
14:33:43
| RE: hesitation
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Message:
Thanks. I'll check TPS voltage. The TB came with a 48mm spacer, and it is installed.
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steelerfans01
Dodge Dakota
JOIN HERE
7/16/2004
07:24:36
| RE: hesitation
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Message:
I had a cracked distributor cap.....replaced it with another Accel, hesitation gone.
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IntenseDak39
*GenIII*
7/16/2004
09:13:20
| RE: hesitation
IP: Logged
Message:
the 50mm tb is bigger than the bores on the V6 intake manifold... the hesitation is probably caused by that. Open the ports on the intake manifold up to match the TB and it should go away.
I had the same thing happen when i had a 68mm viper throttle body on my brother's 4.0 jeep wrangler...
6.6 Lt. Big Block, 727 TF shift kit, 452 heads, edelbrock 750 cfm, .513/.513 284/300 crower cam, comp cams springs, comp cams pushrods, 1.5 roller rockers, dp intake, mopar ignition, mopar windage tray, dual exhaust w/ 40 series flowmasters, 4.10 gears, coilover drag suspension, approx, 3500 lbs
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