Cars & Trucks - Page 9 - Recent Questions, Troubleshooting & Support

Lots of possibilities. You may have a vacuum leak, allowing extra air into your engine. Cracked hoses or even a crack in the main intake hose from the air filter can cause this code. Also possible that you aren’t getting enough fuel to run a balanced air fuel ratio. Could be a plugged fuel filter, pump failing, failing fuel pressure regulator as well. Or, it’s possible that your oxygen sensor is worn out and lying to the computer altogether. Also leaks in the exhaust system between the engine and oxygen sensor can set this code as well.

Toyota Cars &... | Answered on Jun 02, 2020

I don't know - if a diesel the fuel pressure should be a phenomenal number of atmospheres that would be really dangerous to attempt to measure except electronically.

Regarding petrol engine fuel pressure - the actual pressure is somewhat less important than the system's ability to deliver a large volume of fuel quickly - a couple of litres in just a few seconds.

A fuel pressure test is in three parts - first is the volume delivery test, then comes the peak pressure test that runs the pump with the line closed off. A good pump and a clean tank, etc. and the pressure would be nearly off the clock.

If those tests are good the pump and fuel system is ok as far as the injector rail. The fuel supply is then reconnected to the rail and the regulated pressure recorded and then again with vacuum applied to the regulator when the pressure should rise by about 10 psi.
Sorry I don't know the rated pressure but below is the result of a google search and you might find something there...

Nissan Cars &... | Answered on Jun 02, 2020

390_vacuum_dual_diaphram-undefined-undefined-3.png Here is a non-emissions vacuum diagram, it will work on a 2 barrel or 4 barrel carburetor.

Ford Cars &... | Answered on Jun 02, 2020

If the speaker wires are very small then they are likely amp wires, the amp is usually under the passenger seat on those vehicles, there should be a plug behind your stereo that has the bigger wires, that's where the amp attaches to your car harness, if you un-plug that harness and attach your stereo to those wires it should work fine.
Hope this helps.

Ford Cars &... | Answered on Jun 02, 2020

390_vacuum_dual_diaphram-undefined-undefined-0.pngHello, here is a vacuum diagram for a vintage big block mustang with no emissions, it will work on a 2 barrel or a 4 barrel carburetor, if you run your lines like this and get rid of the other BS it will run sooo much better, also you can delete the blue stripe wire if you have an aftermarket air cleaner.
best of luck!

1984 Ford F 350 | Answered on Jun 02, 2020

Hi, you can usually buy a stereo wiring harness that plugs right into your car and they are color coded to match the standard aftermarket wire radio harness, all you do is take the plug from your new stereo and match the wires with the adapter, just connect the matching wire colors. it's super easy and well worth the $15-20, and you don't have to cut up your factory harness.
good luck!

Nissan Cars &... | Answered on Jun 02, 2020

I have a 06 Grand. None of the keyless entry's would work. My son had some kind of Bluetooth for his phone plugged into the right power outlet. Unplugged the Bluetooth and all remotes work just fine. Plugged it back in just to verify and none of the remotes work. It must have some type of security built into it prevent to doors from being locked and draining the battery.

2006 Jeep Grand... | Answered on Jun 02, 2020

Your car is probably less of a car than you imagine and more of a wheeled computer.
It isn't wise to make electrical equipment changes and best practice regarding accessories is to wire independently from the battery and protect each circuit with an additional fuse, leaving the vehicle wiring intact and completely standard.

You will need a circuit diagram of the car as an essential aid to troubleshooting which will tell you how many individual circuits are fed by the fuse and you can isolate each circuit in turn - not a task for the faint-hearted.

As a matter of interest, how big is the parasitic drain and how are you measuring it and how long does it take for your battery to discharge? Modern vehicles do have circuits that need to be kept alive and they consume current constantly. When first connecting the battery there is quite a current surge but it soon settles at a few milliamps, about the same as the battery self-discharge.

If you can't accurately measure the size of the drain (always the best starting point) you can calculate the approximate drain using the battery capacity and how much a fully charged battery discharges in any time period, say, 24 hours.

Finally, are you certain the alternator is charging sufficiently to keep a fully charged battery fully charged? The car alternator isn't designed to recharge a battery and mostly isn't capable of it unless you are driving almost constantly for days...

Mazda Cars &... | Answered on Jun 02, 2020

Align the slim jim with the lock and push it downwards towards the keyhole.When you see the lock start to move, pull the slim jim upward slowly until the door unlocks.

2007 Chevrolet... | Answered on Jun 01, 2020

Sounds like a bad ignition switch or a break between the ignition switch and solenoid or the connection at switch and or at solenoid. Most likely at the solenoid. I'd disconnect wire from solenoid make sure there's good contact between wire and connector. If good, polish the connector and terminal on the solenoid. Kind of like the battery terminal corrosion problem. Double check there is good connection at Ignition switch.

Cars & Trucks | Answered on Jun 01, 2020


Chevrolet Cars &... | Answered on Jun 01, 2020


2012 Chevrolet... | Answered on Jun 01, 2020

First do a throttle body cleaning. There are many ways to do it. Here is one of them.

GMC Cars &... | Answered on Jun 01, 2020


Chevrolet Cars &... | Answered on Jun 01, 2020

First check the computer for codes. Repair any that you find. The evap system may be malfunctioning. Make sure the maintenance is up to date especially the air filter. Mileage will be lost if tires are not inflated to proper pressure. Are you running the a/c more? Idling longer that before? Carrying heaver loads? Fuel leaks are hard to spot. Most will only leak while under pressure so the engine needs to be running.

Chrysler Cars &... | Answered on Jun 01, 2020

First make sure that the shifter cable is properly adjusted and not binding up or broken.

Jeep Cars &... | Answered on Jun 01, 2020

Both have to do with the catalyst converters Hook up a scanner and see the voltages are. Check the wiring and connectors.

Cars & Trucks | Answered on Jun 01, 2020

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