Question about 1989 Chevrolet Cavalier

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1989 chevy cavalier 2.0 throttle body

Car cranks up runs bad black exhauts comes out of tail pipe sounds like its skipping check engine light stays on

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  • NandiT Dec 18, 2008

    I have the same problem and it drives me crazy! Mechanics either look at me like I am crazy when I try to tell them what she does or they fix the wrong thing. I cannot drive her much for fear she will cut off on me in heavy traffic. The strange part is after 10-20 minutes with the hood up she is ready to go. I love my baby and sure wish someone would find a solution to this problem besides that my baby rolls!

  • yadayada
    yadayada May 11, 2010

    skipping, what exactly do you mean by that??

  • Anonymous Mar 19, 2014

    when its idoling it skips and runs rough. I already put another throttle body on it.

  • Anonymous Mar 29, 2014

    car

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I had this problem with my cavlier either check the vaccum hose going to the throttle body and check the TPS ( throttle body position sensor) When standing in the front of the car it is on the right side it will have two screws holding it on they cost about 20-25 new and are not that hard to install let me know if its none of these I have a repair book for this car

Posted on Jan 17, 2009

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If the check engine light is on, the best thing to do is get the code that it generates. It will tell you what is going wrong in the car. You can either do this yourself, or take it to autozone and they will read the code for you for free. Although, in California, Autozone doesn't do this anymore.

Posted on Jan 06, 2009

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Sounds like a bad fuel regulator. check you fuel pressure

Posted on Sep 10, 2008

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1 Answer

91 chevy cav z24 5 spd will not start @ times sounds like no fire other times sounds like no fuel.Replaced fuel pump,timing chain, crankshaft sensor,oil sensor,map sensor,body throttle accel sensor.st


Pull the air cleaner off and crank the engine. If puffs of air come come out of the throttle body when cranking the engine then the timing is not set correctly. Otherwise, after cranking pull a spark plug and see if it is wet with fuel and if so this indicates an ignition problem (coil, distributor/cap/rotor or faulty ECU).

Nov 02, 2014 | 1991 Chevrolet Cavalier

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Cranks but wont start with no spark


Check your fuel pump. It may have died. One way to check is to see if you smell gas at the tail pipe after trying to start it. If you don't, that is a good indicator that the fuel pump ma have died or your fuel filter is clogged.

Feb 22, 2012 | 1989 Chevrolet Cavalier

1 Answer

My Cavalier is a 2001 and suffers the same problem, the check engine light and trac off lights stay on. When switching from Park to Drive, the transmission jumps and the car jerks forward. Any suggestions...


I can't tell for sure not knowing what the check engine light is on for. When it comes ,on it means the computer has detected a problem with a sensor, or with the emissions coming out the tail pipe. As you described the car lurches forward when put in gear, I would highly suspect the IAT (Intake air temperature) sensor. It is located in the air snorkle, coming from the air filter box to the throttle body. It has only 2 wires going to it, and It is generally caused by bad connections at the sensor, or a broken wire going to the sensor (quite often in the connector body itself). It would be best for you to have the check engine light code scanned. You can usually have this done at a large auto parts retailer for free. They range from P0110 - P0114. If so it is very unlikely to be a faulty IAT sensor, usually wiring related.

Feb 26, 2011 | 2001 Chevrolet Cavalier

1 Answer

92 stealth non turbo runs with a hesatation then shuts down for no aparent reason. This is my first time working on one of these electronic nightmares. But without correct info its like stairing into space...


A couple things come to mind:

Tail pipe back: Running rich, your o2 sensor may had failed. These cars are set to if the o2 sensor does fail the engine will run rich rather then lean. This is done to avoid burning up valves. Your manual should tell you how to check

Idle up and down: Your Idle switch (located in the throttle body) may be failing Or/plus the throttle body may be dirty. I'd remove Idle switch and clean it and throttle body with throttle body cleaner. Again your manual should explain how to check.

MAFL Mass Air Flow sensor (located at filter) may be dirty or not operating properly, clean and check.

Check fuel pressure: With varying idle and running issues the fuel pump or regualator may be an issue. Also, but doubtful, the fuel filter may be need of replacement (possible cheap fix)

LAstly your ECU Engine Control Unit may beginning to fail. The early 90"s Mitsubishi products had poor capacitors in them that with time would leak and fail; I've replaced three (3) on various Mitsubishi's. When the ECUs begin their death-spiral the car may come in to runability problems. Also your manual should show you how to check your ECU for failed sensors or such, I believe you cab use just a simple anaolg meter to check the ECU for issues.

Please let me know if this may have assited you,
Tom

May 15, 2010 | 1992 Dodge Stealth

1 Answer

Car won't stay running its like its not getting gas (and yes tank is 3/4 full) shop is telling us its a computer problem.. i didn't think 1989's had a computer. car is a 4cyl automatic


Your 1989 cavalier is a 2 liter fuel injected engine so yes you do have a computer to run the engine so check your fuses and start with the simple and replace the fuel filter, air filter and clean the throttle body with throttle body cleaner. Don't use carburetor cleaner, the carburetor cleaner is to corrosive for the gaskets used in the throttle body. Also make sure all the vacuum lines are connected and not damaged, a bad vacuum line to the MAP sensor will cause what your having.
Good luck and keep us posted. Be glad to help you get your car running 100% again without the cost of a garage trying to be like the tax man.
Thank you for using Fixya

Mar 16, 2010 | 1989 Chevrolet Cavalier

2 Answers

Idles ruff when warm, like it has a miss and black smoke comes out tail pipe, changed crank sensor, o2,egr,coils, plugs and wires ,computer and map sensor.any suggestions would be greatful. only thing left...


Are there any fault codes in the ECM? No "Check Engine" light on?
Black smoke means it is running rich. You should be getting Rich O2 sensor codes. Running rich is usually caused by the Mass Airflow Sensor. (MAF) This is located in the snorkel that connects the air filter to the throttle body. Make sure that the snorkel hose is properly connected to the sensor housing as well as the throttle body housing. (See Picture)88a7041.gif
Also be sure to check the reference voltage (VREF) to the MAF, MAP and TP sensors. It should be right at 4.8 to 5.2 volts. If it is low, suspect a shorted sensor. Note that several sensors are served by the same VREF circuit. I had one GM 3.1L engine that was running like **** and smoking black that had only 2 volts at the MAF. I started unplugging sensors to see if the VREF would come up to specs and found that I had 5 volts at the MAF with the Coolant Level sensor (in the radiator tank) unplugged. Replacing the Coolant Level sensor fixed the car. Any of the sensors could cause the same problem if it is shorting the VREF circuit.
If the VREF circuit checks out OK, Then I would Try a MAF sensor
If you are getting misfire codes, you probably have an injector sticking open.

Oct 11, 2009 | 1996 Oldsmobile Cutlass Supreme Coupe

1 Answer

Engine doen't stay idle at steady rpms rev up and down by itself


Either you have a vacuum leak, a bad throttle body position sensor, or a bad throttle body.

If the throttle body is drive by wire (electronic) then it would be a bad throttle body.

If the throttle body is drive by cable (manually driven by a cable connected to the gas peddle) then it would be a bad throttle position sensor.

If the throttle body is bad the check engine light wil lbe on. If it is on have your codes read at your local parts dealer for free, and this will give you a clue as to which pices/parts you need to replace.

Have the car leak tested and the vacuum linse inspected for leaks as well.

Jun 01, 2009 | 1989 Toyota Camry

2 Answers

Running rich.


The next step is the throttle position sensor.

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2 Answers

89 z24 chevy caviler


Hi,did you replace the engine computer(ecm)?

Aug 13, 2008 | 1989 Chevrolet Cavalier

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