Question about Saturn SL1

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Have a 96 sl1 trans slips out and red lines at 3rd gear sometimes on a good day it skips 3rd straight to 4th. code reader says incorrect ratio 3rd gear. ive read some posts with similar prob saying 3rd gear shift solinoid. i think this is prob the issue however thinking the trans was dust and not wanting to spend the exrtra cash to buy a new one ive driven 70,000 miles plus with this condition. mabe 15,000 milles ago it started making a ringing noise like a dinner bell wheneve under load (accelerating). trans still works great in all other gears and i still drive to work and back every day 100 miles round trip. figure its cheaper to keep this car going than to buy somthing new to put that kind of milage on it. do you think this trans is still worth saving or should i pull one at a junkyard. if saved what parts would i need to replace, around how much? if i go to the junkyard what should i look for (good signs bad signs) in a second hand trans. are all models with the same engine package compatible to the year 2000 like many other parts. im a pretty good mechanic and could prob do the repair myself unless i need to pull the motor (dont have a motor crane could borow one). any help much apreciated thx.

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I would get a used transmission, you maybe getting into some serious work fixing what's causing the noise. Anything from 1995-02 will work, SOHC-SOHC, DOHC-DOHC. What I would want to check on any used transmission is the mileage, fluid color and smell. You should be able to remove it from underneath. Here is a link showing how to remove the transmission:
http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?chapterTitle=Automatic+Transaxle&partName=Drive+Train&pageId=0900c1528017eb26&partId=0900c1528017eb04

Posted on Jun 03, 2010

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Going by what u stated with ringing noise i would say you have a bearing going out transmisson which would require total rebuild of transmisson which requires special tools and alot of time i would guess book time on that would be around 8-10 hours and that not includeing time removeing and installing transmisson so i think u best option is a junkyard tranny far as what ones are compatible junkyard should be able to look that up on there computer ok far as good signs and bad signs i assuming where taking about a atuomatic transmisson
first try to get one with as low as miles as possiable one thing u can do is drop pan and see how much metal fillings are in the pan all used trans going to have a lillte metal in them but u dont want alot in it although sometimes this not a option cause the junkyards drop the pan to check them themselfs so u wont see anything probley easiest way to check them is take the speed sensor out (located in right tube where passenger side halfshaft goes ) this is sensor is a big magnet and if it plastered with metal stay away

Posted on Jun 03, 2010

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Transmition problem


Not good: Indication that the transmission may be slipping
If it is 8 years old or more,not much in way of a fix
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I suspect if you were to take it apart, you would
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My 2000 hyundai elantra is automatic it has a code p0734. which the mechanic explained me that i have to get the speen sensor replace and get new clutch because the 4 gear ratio is bad. pls advice what 2...


P0734=A/T 4th gear incorrect ratio. This has nothing to do with the speed sensor. If the speed sensor was faulty, it would also set OTHER gear incorrect ratio codes. My experience tells me the 4th gear incorrect ration indicates the torque converter clutch (TCC) is slipping and nothing more. Unless there was a speed sensor DTC (Diagnostic Trouble Code), the sensor is not the issue (yet). The fact P0734 was set (trust the computer), the TCC is slipping (out of range). Question: Maintenance history may indicate the wrong transmission fluid may have been introduced. Hyundai's Transmission fluid is strictly SPIII... there is no substitute. The incorrect fluid will cause 4th gear slippage. Now, having said that, it doesn't mean the 4th gear (lock-up) clutch isn't worn out. Have a qualified/certified Hyundai Service Technician properly diagnose this issue.

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Code p0734 I just replaced eng. and trans. now have this code.


Engine Light ON (or Service Engine Soon Warning Light)
- Incorrect transmission shifting Possible causes - Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit Tech notes Start by inspecting the transmission fluid level and condition, and change fluid if necessary. When is the code detected? P0734 is detected when A/T cannot be shifted to the 4th gear position even if electrical circuit is good. P0734 NISSAN Description This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows:

Torque converter slip ratio = A x C/B

A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes

If the actual gear position is higher than the position (4th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

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How do you know what ratio a subaru wrx gearbox is if it doesn't have a trans code sticker on it?


This information is from my genuine service manual. I hope it is of help.
Non-turbo
Turbo
Sedan Wagon
Type 5-forward speeds with synchromesh and 1-reverse
Transmission gear ratio
1st 3.454 3.454
2nd 2.062 1.947
3rd 1.448 1.366
4th 1.088 0.972
5th 0.780 0.738
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Type of gear Hypoid
Gear ratio 4.111 3.900
Rear reduction gear
Transfer
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Gear ratio 1.000 1.100
Final
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Center differential Type and number of gear
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Transmission gear oil capacity 3.5 2 (3.7 US qt, 3.1 Imp qt)

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1 Answer

Transmission slipping. does not appear to be shifting properly. replaced ecm. got tcm from jeep grand cherokee same engine (4.7L). notice significant burning/smoke after driving exhaust manifold. not...


U are going to need to overhaul the transmission here, the smoke is the trans overheating from excessive slippage i suspect.code for wrong gear ratio's mean the input and output shaft speed are out of symc for the gear the trans is in, the 3rd or 4th gear is the usual codes, this sometimes is caused by defective speed sensors but most times the trans is slipping and the TCM detects that and sets a code

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1 Answer

Trans drops into 3rd gear won,t shift to 4th


DTC P0734 is "4th gear incorrect ratio" - that's your torque converter 'LOCK UP Clutch" It's worn out (or you're using the wrong Trans Fluid required by Hyundai - SPIII OR Both). The P1624 is simply the Trans Control Unit (computer) communicating to the Engine Control Module (ECM computer) MIL - on request signal to ECM = asking it to turn on "Check Engine" light. MIL = Malfunction Indicator Lamp. When the torque converter 'lock up" clutch slips or doesn't engage, the trans automatically returns to 3rd gear and stays there (it's called 'fail safe' mode) until you cycle the ignition key, then everything resets until the malfunction occurs again.
You'll need to have an AT (Automatic Transaxel) tester hooked up to verify this. Hyundai has a Service Bulletin specifically for "gear incorrect ratio' codes. If when you changed the trans fluid, was it done at a Hyundai Service Center? If not, someone may have installed the wrong fluid.

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1 Answer

94 SL1 , wont accelerate with used tranny put in recently


Check Fluid level first.If that's O.k check to see if it's the correct trans.Physically the SOHC & DOHC Trans Look The Same But they are geared different.If you put a twin cam trans into a single cam car or visversa it will not shift into 2nd 3rd or 4th.MP6 For SOHC MP7 For Twin Cam.Also 93,94 trans for 93,94 olny 95-02 swap.Good Luck Hope This helps

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1 Answer

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