Sc400 Acceleration Problem

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12-26-10, 07:58 PM

#16

KrazeMatik

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sound like transmission solenoid

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12-26-10, 08:00 PM

#17

SW2UZ

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Quote:

Originally Posted by CoryJNason

Also, when I reset the codes, when the check engine light comes back on, so does the traction controll off light. Why is that?

MAF still unplugged?

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12-26-10, 09:04 PM

#18

sc3tech

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sounds like your trans is slipping or a torque converter issue.

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12-27-10, 10:01 AM

#19

CoryJNason

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It shifts a little hard in second and third but no slipping or anything. MAF is plugged in.

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12-29-10, 08:24 AM

#20

CoryJNason

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Replaced the maf today. Did nothing!

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12-29-10, 01:29 PM

#21

LunaVyohr

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I've said this I think three times now, but stop wasting so much money on **** that's probably not gonna help and just get it diagnosed. In the end, it probably will save you some money.

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01-11-11, 06:34 PM

#22

CoryJNason

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fixed it! Check the first post!

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01-13-11, 04:01 PM

#23

Jysc400

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What was your problem with the acceleration? Pls Lmk. I have a similar problem as well. Thanks in adance.

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01-14-11, 12:25 AM

#24

avilajose

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Quote:

Originally Posted by CoryJNason

Also, when I reset the codes, when the check engine light comes back on, so does the traction controll off light. Why is that?

I had the same problem. I had a different code i got a 13 code tho. both my CEL and TRAC light would stay on and it was a camshaft position sensor. Test them with a ohm meter. if you get a OL reading that means the sensor is bad.

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01-14-11, 11:06 AM

#25

Joey-E

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Quote:

Originally Posted by CoryJNason

I have a 92 sc400. It has 141k. It has a bad acceleration problem. I dont know what it is. It idles fine and then when I go to drive it, it has no real power. It will gradually accelerate and go through the gears. I have replaced the plugs, about to do the wire. Could it be the fuel pump? HELP!?!?!? This is my only car and I need to get it fixed NOW!! PLEASE HELP

UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE-UPDATE

Replaced a coil on the right side of the engine(when looking at the engine) and it runs GREAT NOW! I dont have any shifting problems or anything anymore! Going to reset the codes and see if it still spits out a 25. If it does its probably just an o2 sensor but nothing big. Thanks for all the inputs!

Quote:

Originally Posted by Joey-E

Check your Ignition Coils

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02-26-11, 11:09 AM

#26

micgiordan

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92 SC400 - not running on all 8

Car ran perfect, went to store - block later fell on face - feels like running on 3 or 4 cyclinders. Starts, idles ruff. Replaced both coils & fuel filter - no change. 1 coil drivers side was bad. Dont know where to go from here. Car has 177k miles.