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I have a 1981 Cadillac Eldorado I just changed the fuel pump and the fuse keeps blow the small black negative wire on my battery was bad then I changed it my car ran for two days fuse still blows help


when you changed the negative wire did you clean the connections to the shell and put all the earthing wires back and clean ? ually id the main negative wire fails that would also mean that there could be a problem with the other wires. the copper wire in the wiring can go black and the wire becomes weak and cracks. if the earth wires are weak and you change a wire this can over load the weaker wires in the system . check the wiring, also check the wiring for heat if any wire is getting hot. if its just the pump wiring and nothing else is blowing the fuse. check the wires from the pump to the shell also check the main wire from the pump to the relay. even a relay can cause a problem. if the wires are hard and stiff this means they can brake and split. hope this help you find the problem.

Jul 01, 2017 | Cadillac Cars & Trucks

1 Answer

Power no but not start


do you have 11 volts to turn over the car.
check the cable from the positive side to the starter than check the negative in the same way, make sure the cable wires tight.
make sure solenoid wires are tight, clean, oil free.
check the alternator connected and everything is secured.
check the coil wires from the positive side, and check the ground for proper ground, security wires, and oil free.
check the plug wires to the plugs and the coil for security.

Oct 16, 2015 | Cars & Trucks

1 Answer

1992 c1500 5.7 Tbi no injector pulse while cranking


First check that you have power to the injectors with key in on. The injector fuse should be in the fuse/relay box under the hood. The red wire and the white wire are the power wires for each injector. The dark blue and dark green wires are the ground wires, respectively. The grounds both go into the ECM at the longer connector, where the computer grounds the wire internally to cause pulse.

If no power on either the red or white wire, check the fuse, and check it has power to it in run, or on. If both have power, you will probably need to trace the ground wires for a break. Or check continuity of the ground wires with an ohmmeter (a multi-meter), from injector connector to the pins at the ECM. If continuity is good, and no corrosion or problem with wire connectors, it could be a failed ECM.

Jul 08, 2015 | Cars & Trucks

1 Answer

99 chevy lumina brake lights dont work


if fuses are good then check the brake light switch. one wire should have battery voltage all the time and power on the 2nd wire only with the brake pedal is pushed. if you have no power on the 2nd wire but on the feed wire then the switch is bad. if you have power going into the switch and out then you will have to check for a brake in the wire going to the rear brake lights. check the ground for the sockets if diagnosis goes this far.

Sep 04, 2014 | 1999 Chevrolet Lumina

1 Answer

2004 isuzu rodeo - defrost switch light comes on when brakes are applied


Check the wiring coming through the tail gate, the wiring breaks and grounds out , check wiring, some wiring you can see if you open the door and look for the rubber boot containing wiring, check all wires, you will find bad broken wires, caution have checked could cause lights to go out and not work or cause a electrical fire.

Dec 25, 2012 | 2004 Isuzu Rodeo

1 Answer

1988 honda civic 1.5 l engine turns over but will not spark or run,new spark plugs,roter,and cap still no spark


well if this is the model i think it is you have pgm ignition. you have an ignition coil , ignitor unit, ground wires all(corrosion) left to check.
coil testing
  1. With ignition switch OFF, remove the distributor cap.
  2. Remove the two screws to disconnect the BLK/YEL front terminal A and WHT/BLU from terminal B of the coil.
  3. Using an ohmmeter, check resistance between terminals. Replace coil if resistance is not within specification.
  4. Check that the primary winding resistance between terminals A and B is 0.3-0.5 ohms.
  5. Check that the secondary winding resistance between terminals A and the coil tower is 9,440-14,160 ohms.
  6. If not within specifications, replace the coil.

unit testing
    1. Check and service any Honda engine codes before proceeding.
    2. Check the No. 32 50A fuse on 1985-91 models, or the No. 39 50A fuse on 1992-95 models in the dash fuse box before testing.
    3. Remove the distributor cap, rotor and the leak cover.
    4. Disconnect the wires from the igniter.
    5. Turn the ignition switch ON.
    6. Check for voltage between the BLK/YEL wire and ground. If there is no voltage check the BLK/YEL wire and ignition switch.
    7. Check for voltage between the WHT/BLU wire and ground. If there is no voltage check the WHT/BLU wire and the ignition coil.
    8. Check the continuity between the WHT wire and body ground. Service the wire or connectors as needed.
    9. Check for continuity between the BLU wire and body ground. If no continuity check the wire and connectors between the igniter unit and the
tachometer or the A/Trans control unit.

after these things let me know if problem persists
    1. If any tests were not passed, replace the igniter unit.

Mar 07, 2009 | 1988 Honda Civic 2 Door

1 Answer

O2 sensor out of range


Go to a dealer, to the parts department. Someone there can point it out to you for free.

Jan 08, 2009 | 2002 Nissan Sentra

2 Answers

Checking the fault codes


Yes.  Next to the ash tray there is a black slide off plate that reveals the OBD I plug.  {1996 and newer can be read with an OBD II reader (read for free at Advance auto or Auto Zone)}  Once you reveal this plug on the 1995, you can plug in a single jumper wire (or even a paper clip) in the #4 and #15 pin hole.  There are two rows of pin holes, count from the upper right to the #4, then on to #15 (which will be the second to last pin hole).  Turn the ignition switch on (motor not running), insert the jumper wire for about 3 to 5 seconds, then remove the wire.  The ENGINE LIGHT will flash a hold, then the code, which will go something like this, flash, flash, PAUSE, flash, flash, PAUSE, flash, PAUSE, flash, flash, flash, flash.  Then it will repeat the codes if you just sit there and observe it.  The code in my example would be a 2214 code.
Below are some code I found on a website.  I hope this helps.  Now I ask that you take the time to answer someone elses question.  Lets all share.  Good luck, "Peace through power and knowledge"

CODE FAULT
0000 End of fault sequence
1111 Bad ground to Electronic Control Unit (ECU) or ECU failure-check grounds or replace
ECU
1119 Transmission Range - Defective wiring. Check for break or short.
1213 Vehicle Speed Sensor (VSS) - Check transmission speed sender wiring and the wiring of
the instrument cluster
1231 Vehicle Speed Sensor (VSS) (G54) - Check transmission speed sender wiring and the
wiring of the instrument cluster
1232 Throttle Position Actuator - Check defective actuator or wiring for break or short.
2111 Engine speed sender. (RPM)
2112 Ignition reference sender
2113 Hall sender - No speed signal from distributor; check Hall sensor and circuits or the
Air-flow sensor plate is not moving freely; adjust potentiometer or lever.
2114 Hall sender not on reference point or distributor out of position.
2121 Idle switch - check switch & circuit.
2122 Hall sender - Check wiring for break or short.
2123 Full throttle switch; check switch & circuit.
2132 Electronic Control Module (ECM) - No ignition to injection signal.
2141 Knock sensor 1 control at maximum ****** - test compression, change octane, adjust
timing, check knock-sensor wires.
2142 Knock sensor 1 signal - Test sensor, check wiring for break or short.
2143 Knock sensor 2 control at maximum ****** - test compression, change octane, adjust
timing, check knock-sensor wires.
2144 Knock sensor 2 signal; test sensor.
2212 Throttle Potentiometer - Value out of range.
2214 RPM Signal - Idle speed to high or engine over-revved
2221 Vacuum Control - No vacuum to control unit. Check for leaks.
2222 Manifold Vacuum - Check vacuum line and wastegate for leaks.
Pressure sensor - Sensor defective
2223 Altitude Sensor - Check sensor, check wiring for break or short.
2224 Turbo/Manifold pressure - Check turbo control wiring, check for over boost, air leak,
defective wastegate valve, vacuum leak or defective pressure sensor.
2231 Idle-speed stabilizer adjustment limits exceeded; too-fast idle. Adjust throttle for full
closing, check for vacuum leak, check ignition timing.
Or
Air Mass Sensor - Check sensor and wiring.
2232 Air mass/flow sensor - No signal. Check wiring for break or short.
2233 Air mass/flow sensor reference voltage open or short circuit
2234 ECM Supply voltage low.
2242 CO-potentiometer voltage low
2312 Coolant temperature sensor - Check wiring, check resistance.
2314 Transmission to Engine control module circuit. - Check wires for breaks or shorts.
2322 Intake Air Temperature Sensor - Check sensor and wiring.
2323 Mass Airflow Sensor - Check sensor and wiring for breaks.
2324 Mass Airflow Sensor - Check sensor and wiring for breaks or shorts to B+ or ground or
check for air leak.
2331 Oxygen Sensor Control - Out of range. - Check ignition, air intake for leaks and injectors.
2332 Oxygen Sensor - Bank 2 - Check wiring for breaks or shorts.
2341 Oxygen sensor (O2) at control limit; check CO, lambda-sensor wire, lambda-sensor
control, start valve, evaporative system and check for vacuum leaks.
2342 Oxygen Sensor Control - no signal - Check wiring, sensor.
2343 Rich limit; the pressure regulator has exceeded +10 mA for more than 5 minutes,
closed-loop; check for vacuum leaks.
2344 Lean limit; the pressure actuator has exceeded -5mA for more than 5 minutes, closed
loop; check idle.
2411 EGR System Malfunction
2412 Intake Air Temperature Sensor - Check sensor and wiring for breaks or shorts
2413 Mixture Control - Running rich
Fuel pressure too low
3424 Malfunction Indicator Lamp (MIL) failure - Check lamp and wiring.
4311 Secondary Air Injection Pump Relay - Check relay and wiring.
4312 EGR Frequency Valve
4313 Secondary Air Injection Solenoid Valve - Check valve and wiring.
4331 EVAP Carbon Canister Solenoid Purge Valve 2
4332 Ignition Circuit Final Stage - Check for break or short to ground or B+ or bad ECM.
4343 EVAP Carbon Canister Solenoid Purge Valve 1
4411 Fuel Injector Cylinder 1 or 1 & 5
4412 Fuel Injector Cylinder 2 or 2 & 7
4413 Fuel Injector Cylinder 3 or 3 & 6
4414 Fuel Injector Cylinder 4 or 4 & 8
4421 Fuel Injector Cylinder 5
4422 Fuel Injector Cylinder 6
4423 Fuel Injector Cylinder 7
4424 Fuel Injector Cylinder 8
4431 Idle Air Control Valve / Idle Stabilizer - Check valve and wiring.
4433 Fuel Pump Relay
4442 Wastegate - Defective frequency valve or wiring.
Boost pressure circuit - Check for short.
4443 EVAP Canister purge valve.
4444 No fault in system.

Oct 17, 2008 | 1995 Volkswagen Jetta

2 Answers

Keeps mis-firing on cylinder #3 check engine light flashes and stays on car chugs on uphill slopes


check plugs wires for damage or just replace if you have replaced the #3 plug already if not replace it also

Aug 04, 2008 | 1999 Ford Taurus

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