Question about 1992 Saturn SL

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1992 Saturn SL1 jerks and jumps when accelerating

When I am giving gas to increase speed my 1992 SL1 automatic will **** and jump like it is running out of fuel. Once I get the speed increased it will settle down. This does not happen all the time.

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  • kbsinphila Sep 04, 2008

    my car seems to jolt as i am trying to accellerate. i have a 1992 saturn sl2. last month it overheated real bad a couple of times, and two weeks apart had to get the fan belts replaced, and also the 2nd time the tensioner. the car has had a couple of thermostats replaced and also two or three radiators. my neices husband said i need the headgasket replaced, but others told me the car would not be running anymore

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Did you try to replace your transmition filter.....

Posted on Jun 04, 2009

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Car surging


Is the car equipped with the Automatic Transmission?
If so, read on.
Otherwise skip to the end and answer some questions.

POSSIBLE SCENARIO:
I have observed a condition where my car surges slightly when the torque-converter clutch (TCC) cycles between lock and unlock when driving on an uphill grade.
First some basics and history that will explain why the TCC is used.

Engine, Torque Converter, TCC, and Transmission relationship--
The TCC allows for a solid connection between the engine and transmission which allows the input to the transmission to rotate at the same speed as the engine.
Without a TCC, there is slippage between the engine and automatic transmission. The slippage is greatest at low engine RPM. That is what allows the engine to run with the automatic transmission in gear, like when you first shift into gear or stop at a stop sign. When the throttle pedal is depressed, the engine RPM begins to increase and the torque converter begins to slip less and less the more the engine RPM increases. The car moves. But even at cruising speeds the torque converter slips slightly. Engine RPM is greater than transmission input RPM, which is realized as slight decrease in fuel efficiency.
When acceleration is complete and a constant speed is being maintained, the engine power output is reduced to the point where the TCC can engage and eliminate any slippage between the engine and transmission. If the car has a tachometer the engagement of the TCC can be verified when a slight reduction in engine RPM observed without a corresponding change in vehicle speed.
One method used to test the operation of the TCC is as follows:
Find a flat section of road where it is safe to perform the test.
Reach a steady speed and keep the gas pedal depressed with one foot. While observing the tachometer (or listening for an increase in engine RPM), with the other foot depress the brake pedal enough to activate the break light switch but not enough to engage the brakes. When the brake light switch activates, the TCC receives a signal to disengage. With the gas pedal being held steady, release the brake pedal and the engine RPM should decrease when the TCC engages.
Old cars with Automatic Transmissions did not use a TCC. I believe the TCC was put in use in an attempt to increase fuel economy.

MY EXPERIENCE WITH SIMILAR SYMPTOMS
The condition that causes that issue on my car is this:
- A slight uphill grade increases the load on the engine.
The car tends to gradually slow and it is necessary to depress the gas pedal to maintain speed.
- Depressing the throttle pedal (manually, or automatically with cruise control engaged) signals the torque converter clutch to unlock when the load increases slightly. (A more drastic load increase would signal the Transmission to downshift to a lower gear.) The corresponding increase in engine RPM and output is enough to compensate for the reduction in speed. When the vehicle speed, engine RPM, and throttle position stabilize to the point that the TCC will engage and the engine RPM will reduce in correspondence with TCC engagement. Now, if the road conditions have not changed, power output is not enough to maintain vehicle speed. With the increased load caused by full engagement between engine and transmission, and the cycle (surging) repeats itself until the road conditions change.

Does that help?
If not:

QUESTIONS
Please define the symptoms.
What are the road conditions when the surge occurs? (A slight uphill grade?)
What is the frequency of the surge?
Does the engine power output have a noticeable surge?
Is there a speed change related to the surge?
Does the tachometer move up and down with little or no change in vehicle speed?
Are all instrument indication in the normal range?
What else has changed?

Good luck!

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Adjust idle speed


Probably accelerator/fuel mix sensor? Check the codes at a parts store like Pep Boys, Should indicate the bad boys

Mar 20, 2014 | Saturn SW2 Cars & Trucks

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1998 Dodge Stratus 2.4l bogs down suddenly while at cruising speed


You need to get the engine trouble codes by performing the "keydance" or using a code reader, then start checking fuel pressure at pump and regulator. Best luck. Amclaussen.

Feb 27, 2013 | 1998 Dodge Stratus

1 Answer

My 1992 Saturn SL gets terrible gas mileage


Find the cause of the check eng light and find the cause of the poor mileage.

May 23, 2012 | 1992 Saturn SL1

1 Answer

I have a 1992 saturn when i try to speed up a little quick it starts jumping and sputering if you give it its time it will go as fast as you want though what could be the problem


Sounds like you might have a bad throttle postion sensor. I would also check to see if the throttle body needs cleaned and the fuel filter.

Nov 08, 2010 | 1992 Saturn SL

1 Answer

Hi I have a 1991 Olds Cutlass Supreme, with a 3.1 liter engine. My problem is when the car warms at stops it runs rough. Sometimes shuts off. Sometimes when crusing at speeds 30-50 the car sort of jerks...


My 3.4 liter 91 Cutlass Supreme has similar problem when warm the engine misses (car jerks). But its fine at idle and without any accelerator pressure. The SERVICE ENGINE light also comes on intermittantly. I am going to test the ignition coils.

Oct 25, 2010 | 1991 Oldsmobile Cutlass Supreme

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It's a 92 Plymouth laser 1.8 none turbo, wont start when cold..will only idle. Once it gets some heat in it, it runs and starts fine. It threw 3 codes, volume Air Flow senor, intake air temperature sensor,...


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Sep 15, 2010 | 1992 Plymouth Laser

1 Answer

Air conditioner goes off when fan speed is increased


when it's on 'auto', the fan adjusts according to the temp in the car and the temp setting you have it set at. try setting the auto temp control down to 65, then hit the "-" one more time to send it to "LO" - the fan should automatically jump up to max.

Jul 01, 2010 | 2001 Audi A4

1 Answer

My 1999 saturn SL1 would not start w/o a jump. Then it began to start rather roughly now when i turn the ignition all i hear is 'electricity'. i have to get a jump to get it going


Sounds like you need to replace the battery. However you may have another issue and that could be your alternator. If the alternator is not recharging your battery while the car is running, then a new battery is going to die as well.

May 20, 2010 | 1999 Saturn SL

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