Hot answers tagged

38

That sounds very risky to me. The portions of the plugs that reside in the combustion chamber are designed to tolerate the heat and pressure there. I don't think they will melt. So what will happen is that those parts are likely to remain in the cylinder and may get caught between the top of the piston and the head and/or valves. That is likely to do more ...


28

Do NOT drive a car with a piece of sparkplug inside the engine. It can (and likely will) lead to serious damage (up to a catastrophic engine failure). Get your car towed to a service and have the pieces of the broken plug removed. Additionally, get the oil changed (probably with a flush too, to remove all the debris). You will have to spend some money on ...


22

That's a nice car - don't be a consumer and break it because you're too lazy to fix it properly. Sadly the "proper" fix is to tow it to your mechanic, who will take the head off and fish out the broken pieces. He'll also check the head and valves for damage while its off, and make a recommendation. An old engine idling at low speed might happily burp out ...


16

It is highly probable that the reason your car was reluctant to start was that the time you were running diagnostics had sapped some of the charge from the battery. The battery on the car will not charge unless the engine is running. It is unlikely that this device would harm your vehicle but it is theoretically (and practically) possible to do temporary ...


16

If this happened during a plug change If you have roadside assistance/towing, I would highly recommend getting it towed home, then purchase a cheap USB inspection camera or a inspection unit like this one from Harbor Freight and look inside the spark plug hole to see if there is any remnants of the plug and any trauma to the exhaust value. If it ...


8

To my knowledge there is no way a scanner can cause issues with your computer electronics. This device is a read only device. It doesn't change anything in your computer. It does, however, communicate with the computer. Through this communication it can give the computer commands, such as to clear the codes. This doesn't write anything to the computer, but ...


8

No question - running the engine will break it. If you're "unlucky", there's enough clearance between the piston and the valves to fit the spark plug. In that case you'll have the spark plug rattling around inside the cylinder. In approximate order, this will first destroy the valves which will not seal properly when their edges and seat faces get damaged,...


5

Regular service and fixing what's broken will keep just about any car running for a long time. The main difference with driving shot distances, is that your engine spends more time at less than optimal temperature. This is not as big a deal with modern fuel injection engines, but parts may still wear out faster than vehicles with mostly 'highway miles.' ...


5

No. The tool in and of itself cannot do any "harm" to the vehicle. If you were testing apps with the engine off, it is quite possible that the battery may have drained to the extent that it gave some hiccups while starting. Low fuel level may also be to blame here. However, If the vehicle has error codes present which are cleared with the tool, the ...


4

One of my tires will need replacing soon as well as it is almost at the legal limit. I have a good amount of tread left on my front two tires. I am going to replace all four tires as soon as the worst one is due for a replacement. I want to clarify that you should never replace only one tire on an axle, you must always replace them in pairs at least ...


4

Putting your best tires up front is the exact opposite of what every tire shop I've ever been to in the US will do. You should not put your best tires in the front unless you never drive in adverse conditions like rain or snow. This popular mechanics article sums it up pretty well: The truth: Rear tires provide stability, and without stability, ...


4

I've seen this before on a Zetec Ford Focus Estate. The noise of the engine running with a missing plug made it sound like a lawn mower. Whilst the car could theoretically have been driven a very short distance (i.e. to move it out of danger, not 20+ miles) we decided that it wasn't worth the risk to try and move it under it's own power and towed it with ...


3

The S80 from this period had a high failure rate of ABS modules. Your symptoms seem to match this problem. A failing ABS module will show brake errors and corrupt instrument panel data (lights, speed, temperature). What would help if you read the fault codes before disconnecting the battery, as doing so clears them before you can take a look.


3

My suggestion would be to chase the wiring directly rather than trying to identify all the parts of a system your mechanic did not even identify for you. If possible, find an electrical diagram for the car online. A Google search for 2001 volvo v70 wiring diagram turned up many images of wiring diagrams that should be very helpful. To trace this back, ...


3

You can find the parts list for Volvo online here. The link of interest will be Home> Volvo> V70> 2001> Electrical system> Switches, turn indicators, main and dipped beams, WIPER/WASHER And it looks like the smallest part they sell is the entire turn signal switch. It looks like they run between $67 and $148.. Hmm.. not cheap. The price depends on the ...


3

Almost certainly a poor connection within the bulb holder. You might be able to clean up the connections within the holder with a fine bit of sandpaper or "wet and dry", then adjust them with a tiny screwdriver to improve the contact, but it's probably easier to get a new unit...


3

In my personal experience, having used cheap tires myself once, I'd say don't put them on the rear. If you use them on the front, the car won't have as much breaking power and might tend to under steer. Both of these things can be compensated with a more defensive driving style. If the car starts to under steer you'll feel it and slow down. If your rear ...


3

Just grabbing the first 2002 Volvo Replacement Headlamp I could find the headlamps run at 12V/65W, meaning it would draw 5.4A of current. If you hooked up a 1k resistor and ran it straight to ground while the lightbulb was on, that resistor would pull 12mA of current, adding an additional 0.2% load to the battery. From the car's perspective, you'll be fine....


3

Nice engine you got there! While your issues do sound like a MAF problem (check the MAF readings via OBD!), some turbocharged Volvos are notorious for fuel pressure regulator issues. Basically the regulator diaphragm ruptures and fuel gets into the pressure regulation vacuum hose. Typically this causes poor starting (especially hot) because of an excessively ...


2

If indeed it checks out and you need to replace the camshaft oil seals, check the PCV system too. If it gets clogged and stops functioning, excessive crank case pressure can squeeze out camshaft and crank seals which will make for recurring and potentially catastrophic failure. Which engine does your XC90 have? I use my S60R 5cyl as reference.


2

The part image in the link shows three wires: green, white and black. Combining the image with this blogpost, which explains how to hardwire the 240 taillights, the green/blue is a signal wire for the turn indicator, black is ground. White is purportedly not used: Options at your disposal Source the connector pair and solder/crimp them in place ...


2

You can use the trunk. The reason they say not to use it is for your safety so you don't shock yourself. If you're capable of hooking up jumper cables and have decent access to the battery it's perfectly acceptable. Many Mazdas, Chryslers, BMW, and Mercedes all say to use the engine bay because the batteries are under the seats or in the trunk; It's just so ...


2

If you are looking for a method by which you can diagnose the problem to confirm your suspicions that one of your keys has failed I can suggest the following. In close proximity to the ignition barrel, literally around the outer radius, is an RFID reader. When you place the key in the ignition, this energies and attempts to rear the transponder code from ...


2

There isn't a mechanical relay it's all controlled by the Guard Lock and Alarm module. Gain access to the module and test for power on pins A26 (green/red) B1 (red) and B8 (white). Test for ground on pin A1 (black) If you don't have power on those pins check fuses 7 & 8 in the under dash fuse box. And fuse 9 in the engine compartment fuse box. If you ...


2

Sounds like he bought a new battery to try to fix the issue but it did not. There may be other causes (like fuses, wiring, a non-genuine immobilizer) but the next logical assumption is that the starter and/or starter solenoid have failed.


2

Depends on what you would like to do with it. If you just want to clear some generic codes and the check engine light, then most generic OBD2 cables should work with appropriate software. If you want to do more advanced things, like reading Volvo specific codes or changing available parameters then what you need is VIDA + DiCE. It's a Volvo diagnostics tool ...


1

From what I can tell, the 05 uses CAN protocal, not OBD2, and then there are some issues with using a generic tool, and most accepted, if not only official method, is to use a volvo-specific (proprietary) scan tool to read the codes. Look over the link below and it appears that there has been some headway made in adapting a 'generic' scan tool to work, but ...


1

It depends whether you like understeering or oversteering. I think understeering is more preferable over the other due to thing needs to be done to gain the steering control is simpler; slow down. Correcting/recovering the oversteer with over 1000 degree turn steering wheels nearly impossible. You need to be quick as a snake :) to introduce correcting ...


1

On a FWD car always have the best tyres on the front. The tyres on the front are going to do all the steering, handle all the acceleration forces and 80% of the braking. I would definitely want my best tyres for that. Any worries about bad tyres on the back causing over-steer are unfounded unless they are in terrible condition and you drive like a lunatic. ...


1

It has to get HOT. As you seem to know and elude to by asking if sitting and idling at a higher RPM could resolve the issue. If the car is fit can you just drive it in a lower gear at a higher RPM? Not savagly high like a teenager but reasonably high. If you would be in 5th on the freeway can you drive it in 4th? Some DPF's can get seriously clogged up ...



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