Oct 162019


I plan on buying a 91 240sx, but the issue that the car has is that its ignition timing is off; meaning that it does not run. Also in has 195,000 miles on it. I want this as my project car. Is this a good buy? And what should I expect from a car with 195k miles of that age?

Well, you asked if this was a good buy? Though to answer without the price. If the price is $10,000 then NO, not a good buy. If the price is under $500 and the body is perfect, it is an OK buy considering the unknown factor of the engine and transmission possibly being blown. With it not running there is an infinite number of issues that may be present. And with it setting around from not being running, you may be looking at even more failing parts such as rusted brake and fuel lines, etc.

My recommendation would be to look for one that is already running. It may cost you a little more up front but will be cheaper and less work in the long run.

Oct 072019

Nissan Versa

My 2012 Nissan Versa currently has issues accelerating and when I make a stop the car refuses to move again. The code p0101 showed up so I tried cleaning the mass airflow filter, but I’ve seen very little improvement after a day. What are the next steps I should take to fix the issue?

Nissan Code P0101

Mass or Volume Air Flow Sensor ‘A’ Circuit Range/Performance

Code P0101 Description

The mass air flow sensor (1) is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. The mass air flow sensor controls the temperature of the hot wire to a certain amount. The heat generated by the hot wire is reduced as the intake air flows around it. The more air, the greater the heat loss.

2012 Nissan MAF Sensor

Therefore, the electric current supplied to the hot wire is changed to maintain the temperature of the hot wire as air flow increases. The ECM detects the air flow by means of current change.

Nissan Code P0101 Possible Causes

A) A High Voltage from the sensor is sent to the ECM under light load driving conditions

  • Harness or connectors (Mass air flow sensor circuit is open or shorted.)
  • Mass air flow sensor
  • EVAP control system pressure sensor
  • Intake air temperature sensor

B) A Low Voltage from the sensor is sent to the ECM under Heavy load driving conditions

  • Harness or connectors (Mass air flow sensor circuit is open or shorted.)
  • Intake air leaks
  • Mass air flow sensor
  • EVAP control system pressure sensor
  • Intake air temperature sensor
Check for Cracks in the Air Intake – see Video

Sep 292019

2016 Nissan Pathfinder

Automatic, very slow acceleration especially after a stop. Louder engine noise. Accelerates quite slow period. Clanking noise and bounce when shifting into park or reverse.

Is the check engine light illuminated?

My first guess would be that the transmission is not shifting correctly and is starting out in 2nd gear after a stop. This would also account for the engine having to work harder to accelerate  that may attribute to the louder engine noise. A check engine light code might guide us in the right direction.

Sep 082019


I’m getting low gas mileage. We recently changed the air filter. Then cleaned o2 sensor, throttle body, spark plugs, and catalytic converter. The engine is in good condition. Average mileage is near 9.7

First Step

The first thing to do would be to see if there are any check engine light codes present. Next post the codes below and we can determine which codes may be effecting your fuel mileage.

What kind of mileage were you used to getting? Is this why you started throwing new parts at it and cleaning everything?

Have you tried fuel from a different station to see if there was a difference?

Possible causes

If you are letting the car warm up before driving it will decrease. Low tire pressure will also decrease fuel mileage. A clogged air filter or dragging brake caliper will also decrease fuel mileage.

Source: https://www.freeautomechanic.com/mechanic/forum/tag/fuel-mileage

Aug 062019

Nissan Altima

A month ago my low beam bulb(right side) went out, I changed it, everything worked perfect. Here i am a month later ,replacing it once again, except this time the new bulb isn’t coming on.

What could be causing this?
Left side works perfectly fine.

You can swap the left side (good) bulb to the right in order to test if it is the socket. Alternatively you can in stall the newly purchased bulb into the left side to see if the New bulb is bad. It happens.

In most cases the issue is caused from moisture getting into the headlight assembly either from damage or age.

How to replace the headlight on 2006 Nissan Altima


Aug 062019

Nissan Pathfinder

When I turn on the blower dial on, and the AC on/off button is depressed, I can hear the clutch engaging, but there is no cooling. The unit continues to blow warm air, and while it does, I push the on/off button on and off until the unit starts blowing cold. This can take any where from 5 to 10 minutes. While I am depressing the on/off button on and off, I can hear the clutch engage and disengage. It is a 2001 Nissan Pathfinder.

Throughout the rest of that same day, I just have to turn the blower dial on once (while the on/off switch is in the on position) and it blows cold immediately. The next day, it all repeats again; starting with no cooling for about 5 to 10 minutes while pressing the on/off switch on and off. About two months ago, I replaced the expansion valve, at the suggestion of an Nissan AC expert, with no change.

Your air conditioning compressor clutch in engaging as you stated. This is a good thing. It means that your Freon level is full enough to engage the clutch on the compressor and function properly.

If you were to pop the hood and feel the pipe going to the evaporator it would be cold. Again confirming the compressor, expansion valve,e etc are functioning as they should.

So why is the air conditioning blowing hot?

This is common to a failing mode/blend door actuator. The actuator is a tiny electronic device that opens and closes the doors inside the ventilation system. This allows it to switch from hot to cold.

When the vehicle sets, heat and moisture tend to affect these components. And when first put in use after setting they have a harder time functioning properly.

How to replace Mode Actuator 2001 Nissan Pathfinder

Jul 282019

2005 Nissan AltimaHope everyone is having a great weekend. So I’m having this huge problem with my Altima. Here’s the rundown:

Okay! So I have an 05 Altima 3.5l with 130k miles That was driving BEAUTIFULLY until one day I hit a bump hard in the city then the car stalled. Took it to autozone and code p0340 came up. Replaced the bank 1 and bank 2 cam sensors with cheap chinese sensors (I know) and then had the same problem. Took it to a —-ty mechanic, first tried to tell me the tranny was shot then advised I replace sensors with OEM NISSAN. I bought new genuine oem nissan sensors (bank 1 bank 2 and crankshaft) and had them all installed.. Now mechanic said there was a code for transmission speed sensor. Bought an oem Transmission Speed sensor, had him replace it and said he now thinks transmission is shot because car has little acceleration in drive and clunks in reverse.

This problem happened while I had the p0340 code and would sometimes go away after resetting the negative terminal, then reappear, which leads me to believe the transmission is not bad after all. Im pretty sure the car not accelerating with enough power or going over 2k RPMs is attributed to it being in limp mode, but what the hell do I know?

Any advice?

My first thought since it happened after hitting a bump would be the battery. As a battery wears it leaves deposits in the bottom of the battery and when those deposits build up they short out across the bottom of the lead plates inside. I think that is what happened when you hit the bump, the deposits shifted around enough to short out across the bottom plates. Odds are the battery is a few years old or older anyway. So replacing the battery would be my first thought.

Nissan Code P0340

Camshaft position sensor circuit

Code P0340 Description

The camshaft position sensor senses the retraction with intake valve camshaft to identify a particular cylinder. The camshaft position sensor senses the piston position.

Code P0340 Possible Causes
  • Harness or connectors (the sensor circuit is open or shorted)
  • Camshaft position sensor
  • Camshaft (intake)
  • Starter motor
  • Starting system circuit
  • Dead (weak) battery
Jul 252019

Nissan Altima

Hi there, my 2005 Altima will flood out the spark plus and the cambers with raw gas. I’ve changed the fuel injectors, fuel pump, fuel line, and the ignition coils but seem to still have the same issue. Could it be a problem with the starter or timing chain? I’m just a little stuck because I did take the car to a mechanic and had them run a diagnostic and they thought they located the issue and change my air mass intake boot because it has a crack, I’m guessing they believed maybe a vacuum leak was the culprit but the car still floods out every time after I eventually get it started.

The first step would be to pull any existing trouble codes that may be stored in the computer. Then post them so we can dig deeper into the reason the codes may be stored. It may be a vacuum leak or a faulty sensor. An ECT sensor may be signalling to spray more fuel than needed. But instead of guessing, lets look at the codes first.

Feb 122019

Nissan Pathfinder

2000 Nissan Pathfinder V6 … New battery installed 1 week ago … Starts right up no problem …. Here’s what’s going on …. You’re driving along and everything is fine. Then suddenly the engine seems to slightly shake and then suddenly stalls! The ONLY strange thing (could be related or not) is that in very cold weather without a sufficient warmup, reverse is fine but once it’s in drive there seems to be a clunking noise which you can feel. Then it drives and runs okay!!! At a loss now, any idea’s?

Slightly shake and then suddenly stalls

First place to start would be pulling any check engine light codes.  May or may not show a code. If it does, post code back here in the comments. Most common cause for this issue would be the crankshaft and or camshaft position sensor failing.

For your transmission issue, check the fluid level. If it is full but dark and burnt looking instead of pinkish red, there may be internal damage. Check the color on a white paper towel. Having the transmission fluid and FILTER changed may correct this issue.

Oct 252018

Nissan Titan

Have code 1273…Air fuel sensor…Where is it located and how to change?

Nissan Code P1273

Code P1273 Description:

Air Fuel Sensor 1 Heater Bank 1

Code P1273 Probable Causes:

  1. Sensor or solenoid faulty
  2. Connector terminal contact is damaged or corroded
  3. Wire harness – Check harness for correct voltage, open, short to ground or short to voltage
  4. Update control unit software – Check for the latest control unit update
  5. Powertrain or Engine Control Module faulty
  6. HO2S sensor contamination/damaged

Air Fuel Sensor Location

  • Sensor 1 Bank 1 – at left rear of engine (F65)
  • Sensor 1 Bank 2 – at right rear of engine compartment (F5)

Air Fuel Sensor Location Diagram

A closer look under the hood gives you a better view of the exact location of the A/F sensor.

A/F sensor location diagram

How to change Air Fuel Sensor

  1. Remove harness connector of air fuel ratio A/F sensor
  2. Remove the air fuel ratio A/F sensor is a 7/8 (22 mm) offset oxygen sensor socket.( the socket has a slot in one side to allow siding over the wiring harness.

Offset Oxygen Sensor Socket

  • Size: Common 6 point, 7/8 inch (22 millimeter) hex fits almost all oxygen sensors; 3/8″ drive for ratchets.
  • Design: This socket’s slotted design allows you to remove oxygen sensors with the wiring harness still attached, and the unique off set design of the T7822F Oxygen Sensor Wrench delivers maximum torque with maximum convenience! Made to increase torque on hard-to-remove O2 sensors and allows you to access tough spots, easily!

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