Question about 1991 Toyota MR2

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Smoke coming from throttle cable when ignition is turned over???!! Huh??? Multimeter also reading continuity across the battery terminals...

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It would seem that you have a pretty bad short. I would follow the throttle cable to see what source of power it is shorted to. I would also recomend disconecting thebattery till the problem is found.

Worst case senario is that a fire starts and somebody gets hurt.

Posted on May 16, 2009

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2 Answers

Will not start or click when hitting the ignition switch. have replaced the starter, charged the battery and cleaned the battery terminals


Use voltmeter or test lamp to see if you are getting power to ignition switch. Could be blown fusible link or bad switch.

Apr 21, 2016 | Cars & Trucks

Tip

My car starter motor does not turn over.


Hi.

If you do not have any power at all, and the dash is not turning on, then check the battery connections, and the connection from battery ground to the engine body.
Also ensure you have tested the battery. Read the voltage across the positive battery terminal and a ground connection on the engine body. It must be around 12.5V
If there is no problem in there , then the problem is the ignition cylinder. The ignition cylinder can be tested reading voltages at its contacts. This in case there is no power at all.

If instead the dash is turning on, but the starter motor does not turn over, then there may be more reasons for the fault.

To start, look for the starter fuse. This is a large fuse, probably a 30 Amps. Look also for a5 or 10 Amp fuse to the ECU/PCM (main car computer module. If any of this fuses has blown, it can cut power to the starter motor.

After testing the fuses, check the starter relay. This is usually located in the fusepanel under the hood, or under the dash. The relay must click when the key is turned. The relay can be tested in fullusing a Volt meter or an Ohm meter.
The starter relay can also be tested swapping it with a relay of the same kind.

Fuses and starter relay are the most common failure when the car dash comes on, but the car does not start.
If this test good, ensure that the anti theft system is not armed (starter should still turn over by the way).

If fuses and relay are good, read volts at starter motor, while machineis cranking. You will need to use Voltmeter on the contacts at theback of the starter motor solenoid. If there are 12 Volts at startermotor, but motor does not turn over, then starter motor or startersolenoid is faulty.

The starter solenoid can be tested using an Ohmmeter at its contact. Ifthe solenoid is bad, reading with multimeter set on impedance, it willhave no continuity (it will read infinite Ohms).

If there is no volt, or volt is much below 12 Volts, then the problemis either the ignition switch located in the steering column, or aproblem concerning wiring from ignition.

The ignition switch can be tested jumping its contact, reading Volts orOhms on its terminals. To access the switch it is necessary to takeapart the steering column.



Regards.



on Mar 25, 2010 | Ford Focus Cars & Trucks

1 Answer

ALTERNATOR NOT CHARGING


have an accredited auto electrician check the out put of the alternator . Check the condition of the drive belt and the tension of the belt. place a multimeter across the battery terminals and it should read battery voltage . Increase rpm to around 2.000 rpm and the reading should go up to 14.5-15.5 volts. It doesn't move I would suspect a faulty regulator or diode pack in the alternator.

Jan 25, 2014 | 1935 DKW Reichsklasse F5

1 Answer

Battery dead replaced it lights turn on car will not star not even a noise


if battery dead replace light turns on , please observe electrolyte ,check terminals for any acid corrosion ,use a multimeter take reading before you switch on your ignition then take reading while ignition ,if the readings is less than 12 ,01 volts is ok with the battery and the cranking point not less than 09 -5 volts if less when cranking replace the battery

Dec 14, 2013 | 1991 Toyota Previa

1 Answer

Have good charged battery , but no power in car ?


This is usually a sign of a electrical short that is causing the battery to drain even while the car is off. To check for and troubleshoot the cause of shorts, you need a multimeter and the electrical schematic for the car, assuming there are no after-market modifications to it. Disconnect the (-) terminal on the battery and check the voltage across the (-) cable that was connected and the battery terminal; if it reads above 0, there is a short. Here is a link to a great video that simplifies the steps.
http://www.youtube.com/watch?v=pjXt7_gusgM

Mar 17, 2013 | 1993 Mazda Protege

1 Answer

Gauge showing low output alt only 1yr old wondering if it could be regulator or batt or wiring


if you have access to a digital multimeter, connect the meter (set to volts) across positive and neg. terminal of the battery, should read roughly 12.6 volts, close to 10 volts, battery may be going out, also test the alt output, disconnect neg term and place negative lead to battery neg post and positive lead to neg battery cable (make sure meter is set to amps) should read near the rating, if both those, then you'd want to do a resistance test, (set meter to Ohms) disconnect battery and connect meter neg to either pos cable terminal or where the pos cable connects to the alt and connect positive lead to opposite of neg, should read next to 0, the check resistance of the ground by connecting meter between batt neg cable and body of alt.

- Spenser

Apr 04, 2011 | 1988 Ford F 250

1 Answer

When key is turned starter clicks and will not turn over, new starter, soloniod, ignition relay, worked for a few days and today click again, also new battery, it can be push started and will run


Hello! Either the positive battery connection or the ground connection is resistive (dropping voltage across the cables)...The ground connection being most suspect...If you have a digital multimeter and a wee bit of experience using one these connections can be tested...Set the meter to the lowest dc voltage scale...Place the + probe of the meter on the center of the + battery terminal...The - probe on the other end of the cable at the starter...You must read less than .03 volts...Next, place + probe on the - battery post and the - probe on bare metal of the starter case...You must read less than .05 volts,,,If not the connections need to be removed and cleaned so bare metal touches bare metal...A quick test with meter set on the X10 ohm scale is to measure between the center of the - battery terminal to both chassis and engine block...Both should read a dead short ie...zero ohms...Guru...saailer

Dec 07, 2010 | 2001 Chrysler PT Cruiser

1 Answer

1985 ford LTD - replaced alternator & battery, checked wiring OK. Car will start but cuts a few minutes later, also not holding a charge.


Are you sure that is a charging problem?Check if the carb injects gas at the moment the engine runs off,if there is spark on the ignition cables,as for no holding the charge,make this tip,disconnect the positive cable of the battery and get a multimeter,connect one terminal to the battery post and the other terminal cable,and disconnect every fuse and relay and possible part that consume a charge,one part at the time,when the reading on the multimeter goes down you did find the problem that its consuming the charge.

Sep 29, 2010 | 1985 Ford F 250

2 Answers

Need to test alternator in a 2008 camry


Hi.

Get a multimeter and read Volts across the two battery terminals.

With engine off it should read about 12.5, by turning on the engine and revving i up a bit it should read about 13.5/14 Volts. If voltage remains unchanged, then the alternator is not working.

Aug 20, 2010 | Toyota Camry Cars & Trucks

1 Answer

92 Accord Battery, Alternator, Battery Cables and fuses changed out. Battery is being drained dont know what else it could be...Help me please!


sounds like you have done more work than needed I wouldn't have changed your alternator, waste of money

1st check your battery with a multimeter (go digital if you can) theses are very cheap to buy, and you will use it a lot, set it to volts DC as per instructions start car and connect multimeter probes or clips to appropriate battery termianals, read display it shoud be 13.8 volts,, you now know battery cables and alternator are fine,, disconnect battery and do the same with multimeter on the battery again, leave sitting and watch reading if it goes below 12 volts over an hour your battery needs replacing.. If all good check when the battery terminals are back on tight and clean put the multimeter probes on termianls and ignition off and watch to see if reading starts to drop, if nothing turn ignition to accessories with everything turned off and again watch meter,, its a long process If you find it is still draining then pull a fuse at a time and check meter each time, if still dropping put the fuse back in and pull another one out.... repeat process till found........ before you start check glove box light isnt staying on, boot/trunk light is going off, ( put someone in there if you cant see) ,, If you have put in an aftermarket stero it may draw to much and you may have to upgrade your system, start with checking your battery

Jun 21, 2010 | 1992 Honda Accord

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