20 Most Recent 1999 Pontiac Sunfire Questions & Answers


would be nice to know the make, model , year of what ever it is
from your poor description , it could be a failed drive line shaft

1999 Pontiac... | Answered on Feb 21, 2018


Hi Fuel pump pressure test and Flow test (a wine bottle (75cl) should fill in less than 30 seconds).
ECU could be in limp home, my advice ask a technician for his help. Kind regards David

1999 Pontiac... | Answered on Dec 25, 2017


Sounds like the alternator , check the battery voltage . If you can start the car put a voltage tester across the battery terminals rev the engine if no rise in voltage your alternator is dead.

1999 Pontiac... | Answered on Nov 02, 2017


there is nothing special about your keys , no transponder . Has a hall effect sensor that is part of the ignition lock cylinder housing . You could get a key made at hardware store . woludn't make a difference .
The Passlock™ lock cylinder is a locking cylinder that turns a rotating magnet past a stationary hall effect sensor. The rotating magnet creates a resistance code (R-Code) that the cylinder sends to the instrument cluster. The Passlock™ lock cylinder interfaces with the instrument cluster through a 3 wire connection. The 3 wires have the following functions:
• Power
• Ground
• Data

Is the security light lit on the insturment cluster ? Does the vehicle start an run ?

1999 Pontiac... | Answered on Sep 10, 2017


Try squirting some lubricant down the barrel of the switch.

1999 Pontiac... | Answered on Aug 04, 2017


I recommend you test the tps. Procedure at the link below. The resistance should change linearly as you open the throttle. If it skips and jumps, it is bad.
Repair Guides Electronic Engine Controls Throttle Position Sensor AutoZone...

The signal is on the dark blue wire. Just put your red probe in the back of the connector on that wire terminal and hold your black probe on engine ground.

0900c1528003cfe5-nx3xp4iclr3gdoop55qe12bz-1-0.gif Tps is upper right on the diagram.

1999 Pontiac... | Answered on Aug 01, 2017


On some of these motors the crank position sensor goes bad when it heats up I would replace that first

1999 Pontiac... | Answered on Jul 25, 2017


Voltage drop testing the starter circuit . Bad connection , battery cables etc.....
Starter Voltage Drop

1999 Pontiac... | Answered on Jul 05, 2017


It will turn on when I hit the button and the turn signals do work. All of this has led to my ABS lights to come on as well. ??????????? Your best bet , take it to a qualified repair shop or learn to do better explanation's ! Or lean to do automotive electrical testing .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Electric Testing Techniques You Need to Know

How to Use Multimeter to Troubleshoot Common Problems

Do you know what a wiring diagram is ? How to use a DVOM - digital volt ohm meter ? Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year make ,model and engine size. Under system click on lighting ,then under subsystem click on turn signals . Click the search button then the blue links .Check power an ground circuits ! This is how we diagnose electrical faults , not just replacing parts .

Turn Lamps
Voltage is applied through the TURN fuse and the turn/hazard flasher when the ignition switch is in the following positions:
• RUN
• BULB TEST
• START
The voltage travels to the contact in the hazard switch. The hazard switch is located in the turn/hazard-headlamp switch assembly. This contact is normally closed.
When the left turn signal is turned on, voltage is applied to the following components.
• The left turn indicator
• The left front park/turn lamp circuit 14
• The left rear turn lamp circuit 18
The turn lamps turn on immediately. The current flow heats up the timing element. The timing element is located in the turn/hazard flasher. The timing element repeatedly opens and closes the circuit. This action causes the turn lamps to begin flashing.
The voltage that is applied to the left front park/turn lamp is also applied to the left front marker lamp. If the headlamp switch is in the OFF position, the left front marker lamp will find a path to ground through one of the following lamps. The following lamps provide low resistance paths to ground:
• The right front marker lamp
• The right turn indicator
• The right front park/turn lamps
• The left front park/turn lamps
The left front marker lamp flashes with the turn lamps. The voltage drop across the marker lamp is much higher than the voltage drop across the other lamps. The lamps that are used for the ground path will not flash.
When the headlamp switch is in either the PARK or HEAD positions, voltage is applied through the following components:
• The EXT LP fuse
• The marker lamps
• The park lamps
When the left turn signal is turned on, the left marker lamp will have voltage at both connections. The left marker lamp does not light. When the turn/hazard flasher stops the voltage to the turn lamps, the marker lamp is grounded through the turn lamp. The marker lamp does not go on. The left front marker lamp flashes in the following manner:
• The left front marker lamp flashes on when the turn filament of the left front park/turn lamp goes off.
• The left front marker lamp flashes off when the turn filament of the left front park/turn lamp goes on.
Voltage is applied to the right lamps in the same manner, when the right turn signal is turned on.
Hazard Lamps
Voltage is applied at all times through the following components to the normally open contact of the hazard switch in the turn/hazard-headlamp switch assembly:
• The STOP HAZ fuse
• The turn/hazard flasher
When the hazard switch is turned on, voltage is applied to the following components:
• The front turn lamps
• The rear turn lamps
The following lamps flash on and off:
• All of the turn lamps
• Both of the turn indicators
The front marker lamps flash with the hazard lamps on, just as the front marker lamps flash when the turn lamps are on. If the headlamp switch is in the OFF position, the front marker lamps flash on when the hazard lamps are on. The front marker lights will flash on when the hazard lamps are on if the headlamp switch is in one of the following positions:
• PARK
• HEAD
When the hazard lamps are on, the following conditions apply:
• The turn circuit is always open.
• The turn/hazard flasher controls the lamp.
Park/Marker Lamps
Voltage is applied through the EXT LP fuse, to the headlamp switch at all times. Voltage is applied to the park lamps and the marker lamps when the headlamp switch is in the following positions:
• PARK
• HEAD
The front marker lamps are grounded through the turn filament of the respective front park/turn lamp. The front marker lamps light as a result.
Stop Lamps
Voltage is applied through the STOP HAZ fuse to the brake switch at all times. When the brake pedal is depressed, the brake switch closes. This action applies voltage through the turn/hazard-headlamp switch assembly to the following lamps:
• The high mounted stop lamp assembly
• The left tail/stop-turn lamps
• The right tail/stop-turn lamps


1999 Pontiac... | Answered on Jun 30, 2017


Your turn signal switch in your sterring colum is bad. The turn signal canceler in the switch is bad causeing both brake lights to be canceled all the time. Common problem

1999 Pontiac... | Answered on May 17, 2017


Check your Fan Cluch.This will make it over Heat.OK.Good Luck...

1999 Pontiac... | Answered on May 09, 2017


Make sure the engine is cold!! There are only three areas for checking assuming that you have been running the car with sufficient coolant in the system 1) Coolant filler cap, This must have tight seal as it maintains the coolant under pressure when the engine is hot. Failure of the seal will result in no pressure build up in the subsequent loss of coolant by boiling off. 2) Check the thermostat, located within the metal housing immediately connected to the top hose of the radiator. Put the thermostat in a clear heat resistant jug and pour in boiling water. You should see that the thermostat should open immediately and remain open until the temperature drops below about 85C. If it does not, try a couple of more times to be sure and then buy a replacement. 3) Fan issues, If the viscous coupling at the back of the fan has gone the car will tend to overheat quickly when in slow traffic or even just idling. Conversely on the move the car will tend to remain cooler for longer as air is forced through the radiator matrix. A little trick to try in an emergency is to put the car heater to full heat with a full fan. Uncomfortable but the additional heat taken out of the engine cooling system can help prevent the engine overheating. The lack of viscous coupling can be felt by turning the fan blades. They should be sluggish even when cold and not spin after flicking over. If the fan does spin freely a new viscous coupling will need to be fitted. Engineers design cooling systems, thermostat, fan speed, radiator size etc. to cope with the anticipated heat output of the engine with surprisingly little margin; an overcooled engine is inefficient. Even a slight loss of effectiveness by just one component in the system can lead to overheating. Water pumps only cause over heating when the front seal fails and allows all the coolant water to drain out. This is obvious to see: loss of coolant from the reservoir and a brown stain running perpendicular to the front of the engine around the bay and hood innards corresponding to the line of the fan blades distributing the lost coolant

1999 Pontiac... | Answered on May 09, 2017


first , find an accredited shop that knows what they are talking about as you are being led by your wallet
the first check in any good shop is a load test on the battery, clean and tighten the battery terminals , the pull and bench test the starter , then repair / replace as necessary
removing the battery activates the immobilizer so it is necessary to reset using a scan tool
From your statement , none of those things were done so the shop has little knowledge of repairs
the system can be bypassed but I consider it not necessary if proper procedures are followed

1999 Pontiac... | Answered on Apr 26, 2017


Did you clear codes ? . All codes in the theft deterrent module must be cleared for a relearn.
PASSLOCK Changing - Components Description
Important: Due to component variability, the vehicle theft deterrent (VTD) system must have the learn procedure performed regardless, if the vehicle starts on the first ignition cycle after a VTD repair.
All codes in the theft deterrent module must be cleared for a relearn.
Engineers design the Passlock™ system in order to prevent theft even if the various theft deterrent parts change. The Tamper mode will engage if any of the following components change:
• The Passlock™ lock cylinder
• The instrument cluster
• The powertrain control module (PCM)
If you replace any of the above components, the system will enter the long tamper mode. If the system enters the long tamper mode, ensure that the system completes a long tamper mode cycle. During the long tamper mode cycle, the THEFT indicator will flash for the full 10 minutes. The instrument cluster and the PCM require the full 10 minutes in order to complete the learn cycle. Ensure that the ignition switch remains in RUN until the indicator stops flashing. If you turn the ignition switch before the indicator stops flashing, repeat the long tamper cycle from the beginning.
Are there any codes ?
Problem
Action
The THEFT SYSTEM indicator will not light under any circumstances.
Replace the instrument cluster.
For Chevrolet vehicles, refer to Instrument Cluster Replacement .
For Pontiac vehicles, refer to Instrument Cluster Replacement .
Multiple indicators light continuously.
Test for a loss of serial data. Refer to Data Link Connector.
Instrument cluster DTC B1021 sets.
The DTC indicates a loss of powertrain control module (PCM) serial data. Refer to Data Link Connector.
Instrument cluster DTC B1022 sets.
The DTC indicates a loss of SIR serial data. Refer to Data Link Connector.
Instrument cluster DTC B1023 sets.
The DTC indicates a loss of ABS serial data. Refer to Data Link Connector.
PCM DTC P1601 sets.
The DTC indicates a loss of PCM serial data. Refer to Data Link Connector.
PCM DTC P1629 sets.
The DTC indicates PCM Theft Deterrent failure. Refer to the appropriate diagnostic table in Engine Controls.
Instrument cluster DTC B1011 sets.
Refer to DTC B1011 Passlock Cyl Data Shorted This Ign Cycle .
Instrument cluster DTC B1012 sets.
Refer to DTC B1012 Passlock Bad R-code This Ignition Cycle .
Instrument cluster DTC B1013 sets.
Refer to DTC B1013 Passlock Bad Timing This Ignition Cycle .
Instrument cluster DTC B1014 sets.
Refer to DTC B1014 Passlock R-code Unprogrammed .
Instrument cluster DTC B1015 sets.
Refer to DTC B1015 Passlock Cluster Fail Enabled .
Instrument cluster DTC B1017 sets.
Refer to DTC B1017 Passlock R-code Learn Failed .
The indicator flashes and no instrument cluster codes are set.
Refer to DTC B1013 Passlock Bad Timing This Ignition Cycle (the diagnostic table for DTC B1013).

1999 Pontiac... | Answered on Apr 08, 2017


you car likely thinks its stuck in reverse, which it may be... even if you can roll it. you'll need to find a way to either get it into park or neutral, normally this can be done by the actual linkages under the shift console or from underneath the car.

1999 Pontiac... | Answered on Apr 07, 2017

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