Top 20 1999 Chevrolet Malibu Questions & Answers

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Not sure where the freeze plugs are but these engines have a bad reputation of having the lower intake manifold gaskets that leak from their corners that connect to the engine block.

One of them the PCM - engine computer gives power too- first when key turned on , two second prim ,then when engine is cranking , PCM has to see a signal from the crank sensor . Applying power where it shouldn't be can fry the PCM . GM Fuel Pump Relay Testing

Look for a broken heater hose.

Check battery cable on the + side. There may be 2 cables sandwiched together on the + lug. One runs the computer and the other is everything else. Mine was loose and car would die.

Any codes? Sounds like maf sensor or tps.

Check your cylinder cap where you add oil to the engine see what color of the oil if it's coffee with cream ,it started to mix your coolant to the oil

You have a blockage somewhere in the system not allowing the coolant to circulate. Also the water pump could be bad. Could be a bad water pump

Sounds like you blew a head gasket or even worse. Get a pressure tester from your local parts store and pressure the system up. Most of the time I've found bad intake gasket and the bypass elbows bad. Parts don't cost much but takes a few hours to fix.

If problems when driving, not idling, I don't think the iac is the problem? When the throttle valve is open, the iac has nothing to do with it, in my opinion. Any applicable trouble codes? If I understand your post correctly, I'd probably check your ignition switch. The iac should be on the throttle body, four wire connector, you can see the wire colors.

If your not going to fix the horn plate in the column. Wiring a horn button is easy. You need a hot lead from the fuse panel to the after market button and from the other side to the horn button under the hood unit (grill area). Most horn unit are self grounding.

Air or fuel filters dirty,or failing fuel pump?

code p 0753 refers to shift solenoid (SS) A ---electrical===causes --wiring ---shift solenoid ---ECM/TCM code p 0758 refers to Shift solenoid (SS) B -- electrical===causes -- same as for p 0753 code p 0452 refers to evaporative emission (EVAP) pressure sensor---low input===causes wiring short to ground ---EVAP pressure sensor ---ECM code p1860 refers to TCC / PWM solenoid circuit breaker the first 2 are solenoid problems in the transmission the p1860 is the torque converter clutch solenoid / servo code p 0113refers to intake air temp (IAT) sensor --circuit malfunction===causes--wiring open circuit/ short to positive ---wiring short to ground ---ground wire defective --IAT sensor ---ECM

if ran it with ouut water / coolant for to long possible blew up engine --if water going out as fast as putting in --freeze out plug gone or damaged --head cracked --engine block cracked

sounds like a bad solenoid on the starter. replace the 1999 starter(Its old).

Somethings loose. Check the plug on the back. You may have to take it partially out to do so!

Here's video showing the basic procedures. He mentioned but didn't emphasize supporting the engine before removing the mount. Also, he didn't show installing the pulley on the new pump. If you get the 'loaner' tool from parts store, the same tool and accessories can be used to remove the pulley and install it. Pontiac Grand Am Olds Alero 3 4 liter powersteering pump replacement

hope you ran it till it warmed up to make sure its not just moisture ,if it still has water running out tail pipe head gasket is the problem ,check your coolant resivor ,for pressure and or the smell of exhaust .

injector/injector seals or line leaking

Yes , the Refrigerant level is good , I would say the control panel is bad , or there is a problem with HVAC Air Delivery/Temperature Control Circuit Description The vacuum actuators move the air valves in the HVAC system (except the temperature valve). Vacuum is applied to the actuators through the mode selector in the heater A/C control assembly. The mode selector consists of a rotary vacuum switch. The rotary vacuum switch supplies vacuum to the vacuum actuators according to the operating mode selected by the driver. A small servo motor moves the air temperature actuator. The small servo motor positions the door according to the voltage level from the temperature selector in the heater A/C control assembly. The temperature selector is a potentiometer positioned by the temperature control knob on the front of the heater A/C control assembly. Air Temperature Actuator When the ignition switch is in the RUN position, battery voltage is applied to the air temperature actuator. The actuator receives ground at all times through the following components: • CKT 251 • Ground G204 The temperature selector is a potentiometer with a wiper arm. The wiper arm is electrically tied to the air temperature input through CKT 733. When the temperature selector is moved between COLD and HOT, voltage to the control input varies between 1 and 12 volts. The temperature valve motor solid state circuitry performs the following tasks: • Looks at the control input voltage • Moves the motor to correspond to the control input voltage The temperature valve moves for the following reasons: • In order to allow the air to pass through the heater core • In order to allow the air to pass around the heater core This control achieves the desired passenger compartment temperature. HVAC Air Delivery System Check Step Action Yes No 1 Start the engine. Turn the blower motor fan ON and select an air outlet mode. Does air flow out of the selected HVAC outlet ducts? Go to Step 3 Go to Step 2 2 Did the customer concern mention that the air discharges out the correct ducts at first, but then changes during higher engine RPM? Go to Step 7 Go to Step 3 3 With the engine running, cycle the HVAC controls through all the modes. Does the air come out of the selected outlet ducts? Go to Step 18 Go to Step 4 4 With the engine running, take a vacuum reading at the manifold vacuum port that supplies vacuum to the HVAC vacuum control assembly. Is there engine vacuum? Go to Step 6 Go to Step 5 5 Repair the no vacuum condition. Is the repair complete? Go to Step 18 -- 6 Take a vacuum reading at the vacuum supply line at the HVAC vacuum control assembly. Is the vacuum reading the same as the engine vacuum? Go to Step 11 Go to Step 8 7 Disconnect the vacuum supply line from the HVAC vacuum control assembly. With the vacuum gauge connected to the vacuum supply line, re-start the engine and turn the engine OFF. Does the system lose vacuum after turning OFF the engine? Go to Step 8 Go to Step 11 8 Inspect for leaking or collapsed vacuum lines between the engine manifold vacuum port and the HVAC vacuum control assembly. Are the vacuum lines leaking? Go to Step 9 Go to Step 10 9 Repair or replace the collapsed or leaking vacuum line. Is the repair complete? Go to Step 18 -- 10 Replace the vacuum reservoir tank. Is the repair complete? Go to Step 18 -- 11 Using an external vacuum source, apply vacuum to the appropriate vacuum line at the connector to the HVAC vacuum control assembly. Does the actuator retract? Go to Step 17 Go to Step 12 12 Inspect for leaking or collapsed vacuum lines between the actuator and the connector to the HVAC vacuum control assembly. Are the vacuum lines leaking? Go to Step 9 Go to Step 13 13 Disconnect the vacuum line from the actuator. Apply an external vacuum source to the actuator. Did the actuator retract? Go to Step 14 Go to Step 16 14 With the actuator disconnected, inspect the door for binding. Does the door move freely? Go to Step 16 Go to Step 15 15 Repair the appropriate binding door. Is the repair complete? Go to Step 18 -- 16 Replace the appropriate vacuum actuator. Is the repair complete? Go to Step 18 -- 17 Replace the HVAC vacuum control assembly. Is the repair complete? Go to Step 18 -- 18 Cycle the HVAC controls through all modes to verify proper operation. Did you correct the condition? System OK --