91 Dodge Dynasty: Fuel/Acceleration issue

Beffan Itchyfoot · 08-14-2003, 02:51 AM

I'm curretly driving a 1991 Dodge Dynasty (V6, automatic) that is having an intermitant problem with the acceleration while driving. The car has no issues starting, idles like a dream, and easily blows away newer 4-bangers.

But every once in a while, I step lightly on the gas and nothing happens. I press harder and get no response, the car just idles like I had my foot off the gas. Sometimes I get a little backfiring. Once I floor the accelerator, I'm pressed back into my seat. My throtle has two speeds - idle and full blast.

Now, while coasting down the highway I can put it into neutral and I will have the full range of the throtle available to me. But once I put it back into Drive, nothing.

I have brought this car to several mechanics, none have been able to fix it. I have had all the wires and plugs changed twice, I had the fuel line blown out and the filter changed. The problem will come and go as it pleases.

A friend of mine has seen this same thing happen with his mother's Dodge Dynasty (unknown year). Could this be a fluke with the model itself? Any insight provided would be greatly appreciated. Thanks!

Polygon · 08-14-2003, 12:16 PM

I would say that it is not a problem with the engine. You have a problem with the transmission. It might be time for a rebuild or better yet a new unit. I think your car has the A-604. I saw a new one for sale on eBay recently.

Beffan Itchyfoot · 08-14-2003, 11:08 PM

How could the transmission cause this problem? My transmission seems to be in good working order. The problem is the engine ideling when i hit the gas.

Polygon · 08-19-2003, 04:36 PM

Quote:

Originally Posted by Beffan Itchyfoot

Now, while coasting down the highway I can put it into neutral and I will have the full range of the throtle available to me. But once I put it back into Drive, nothing.

That is what leads me to believe that it is a problem with the tranny.

daytonashelby2.5 · 09-08-2003, 03:05 AM

this is what happens when the torque converter is sliping inthe transmition other than that check all ur fuses ohh and if the torque converter slip man ur looking at 700$cnd rebuild it hapend to me with the shelby not a fun thing to have happen to u goin 160k/hm

theslicksteve · 11-03-2003, 10:57 PM

Quote:

Originally Posted by Beffan Itchyfoot

I'm curretly driving a 1991 Dodge Dynasty (V6, automatic) that is having an intermitant problem with the acceleration while driving. The car has no issues starting, idles like a dream, and easily blows away newer 4-bangers.

But every once in a while, I step lightly on the gas and nothing happens. I press harder and get no response, the car just idles like I had my foot off the gas. Sometimes I get a little backfiring. Once I floor the accelerator, I'm pressed back into my seat. My throtle has two speeds - idle and full blast.

Now, while coasting down the highway I can put it into neutral and I will have the full range of the throtle available to me. But once I put it back into Drive, nothing.

I have brought this car to several mechanics, none have been able to fix it. I have had all the wires and plugs changed twice, I had the fuel line blown out and the filter changed. The problem will come and go as it pleases.

A friend of mine has seen this same thing happen with his mother's Dodge Dynasty (unknown year). Could this be a fluke with the model itself? Any insight provided would be greatly appreciated. Thanks!

check the throttle position sensor and the map sensor. one of them is more than likely your problem. but could possibly be trans. but doubt it.

proticus · 11-08-2003, 04:43 PM

i agree with slick steve. i doubt the transmission problem. check the throttle position sensor, and check the actual throttle body and it's connection with the throttle cable.

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