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10 votes

Do I change all four coils when I change one spark plug that is faulty

You shouldn't need to change the spark plug coils unless they are faulty, so the answer to your question is no, you don't need to replace the coils again. There probably wasn't a need to replace all ...
HandyHowie's user avatar
  • 25.5k
6 votes
Accepted

Will it harm an engine to use 10W oil when it calls for 5W?

Especially given that you live in Florida, 10W-30 vs 5W-30 is not an issue at all. Sometimes thicker oil is even recommended in higher mileage engines, although I believe the jury is still out on it. ...
Zshoulders's user avatar
  • 1,646
4 votes

Can anyone help me identify this car? I think it's a 1941 __________ 2 door coupe (Buick? Chevy?)

It's a Nash; compare the lettering on the car's trunk logo with this better example from the Wikipedia page on Nash:
DavidRecallsMonica's user avatar
4 votes

Need to find replacement light bulb for '60s Delco radio

I appears you need a G3.5 or G3 1/2 bulb with a bayonet base. It is also referred to as a mini indicator bulb. Looking on amazon, there are still some companies that make them. If you want to go to ...
rpmerf's user avatar
  • 8,448
4 votes

Will it harm an engine to use 10W oil when it calls for 5W?

With temperatures going down to 20F a 10W oil will not be an issue. Should you be faced with that kind of "extreme" cold you can just let your car warm up for 30 to 60 seconds before you start rolling....
mongo's user avatar
  • 2,115
4 votes

Metal L shaped coolant line leaking

Is the leak coming from where a metal (yes, most likely aluminum) and rubber part are joined? If so, you can remove the crimped ring which is there and treat the interface like any other by using a ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes
Accepted

What is this PCV hose connector near the throttle body?

That is a PVC valve hose assembly. They are inexpensive (less than $10 in my area) and fairly straight forward to replace. This connects the PCV valve to the manifold (the connector you pointed out) ...
CharlieRB's user avatar
  • 9,005
3 votes

How do I locate a vacuum hose in 1993 Buick Regal for heating system

If i remember right there is a vacuum solenoid box under the dash on the passenger side, they are notorious for the hoses and connectors inside the box to disintegrate, you can open the box and re ...
Moab's user avatar
  • 8,000
3 votes
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replacing wheel studs on a 92 Buick century

I have the service manual for the 93 Buick and you have to grind the old studs out and put a small stud in for replacement or remove the hub. You can not install the regular size stud without removing ...
93 buick regal limited's user avatar
3 votes
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Door panel removal

The shiny plastic part of the lock lever is attached by a clip onto a metal rod that continues into the door panel and connects to the locking mechanism. The shiny plastic knob must be removed in ...
Unknown Zombie's user avatar
3 votes
Accepted

What size is my oil drain plug?

According to rockauto.com, your drain plug should be an M12x1.75 with a 15mm head. If a 15mm wrench is not fitting onto it, get a new drain plug, then get the old one off using whatever method which ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

Checking the oil

You check engine oil with the engine OFF. Preferably at least about a minute or so after running. Hot or cold engine doesn't matter. Pull the stick out, wipe it, put it back, pull again and read.
mike65535's user avatar
  • 845
3 votes

05 Buick lacrosse

It's of little significance especially in the short-term. Besides, you diluted the SAE30 with the existing 5W30. The difference is that SAE30 is "straight" weight oil. The 5W in 5W-30 ...
jwh20's user avatar
  • 12.1k
2 votes

Doea a 2004 buick century have a timing belt?

The first Google result says it all: https://repairpal.com/when-do-i-change-timing-belt-404 This car has a timing chain. No timing belt worries, then. Also, no chain worries according to the link. ...
juhist's user avatar
  • 15.3k
2 votes

What to do with aftermarket radiator as far as installing engine coolant sensor

You may have multiple options available. Check with whoever sold you the part before assuming any of the following are possible. Take it back and get a refund. Take the new and old radiator back and ...
race fever's user avatar
  • 3,353
2 votes

why Buick Park Avenue blowing hot air on drivers side?

Could have freaked out the HVAC actuators . You could try to have the actuators re-homed at a dealership or any shop that has a Tech 2 scanner on hand . If this dose not fix the issue look for codes ...
Jp Woodard's user avatar
2 votes
Accepted

how to find part number for slide-out tray cover that has cigarette lighter

That is the part number for the tray cover. They sell an assembly 10264371 that is the whole assembly. The cover does not seem to be for sale except maybe an used one on Ebay.
Donald Cummins's user avatar
2 votes

Spark plugs won't fire! Mechanic for hire?

Check to see if there is 12volts at the dist coil pink wire with key on. Also those had issues with the crank sensor getting damaged due to the sensor ring on the crankshaft harmonic balancer ...
Moab's user avatar
  • 8,000
2 votes
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Do I have to disconnect the battery before I replace AC pressure sensor/pressure switch?

You need to be totally sure the pressure switch/sensor port has a Schrader valve. You don't want to vent refrigerant into the atmosphere and also accidentally vent it where you don't want it to vent (...
Al_'s user avatar
  • 958
2 votes
Accepted

Could a bad purge valve be my problem?

I have no specific knowledge on the 2008 LaCrosse, however -- Be careful with your assumptions. The purge valve is usually under the hood and is normally closed when not energized. The vent valve is ...
MTA's user avatar
  • 8,548
2 votes

Could a bad purge valve be my problem?

OK, so utilizing information from @MTA about the actual operation of the purge valve, I applied 12 volt DC to it and it operated but never sealed when not energized. This confirmed a bad valve. I took ...
JACK's user avatar
  • 365
2 votes

Positive battery terminal is seized (rust or what not), can electrical work be still done with only the negative cable removed

No problem as long as the negative is disconnected. You just have to disrupt the flow of electricity, which is what you've done by disconnecting the negative lead.
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Buick Lacrosse CXL transmission fluid

Depending on what year your LeCrosse came out will dictate what is specified for your vehicle. GM specified Dexron VI for all 2006-newer automatic vehicles. If yours is a 2005, it should be fine. ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Brake rotor grinding when moving after installing new pads /rotors

Brake disks should be machined pretty much true with virtually zero run-out. Sometimes however they're not perfectly machined and they'll have a very slight bit of run-out in them. This is whats ...
Orb's user avatar
  • 5,067
1 vote

Serpentine belt area covered in black gunk/grease

It looks like you have a long-term oil leak, perhaps from the timing cover or crankshaft seal. This probably got on to the serpentine belt in sufficient quantities to cause slipping, overheating, and ...
SteveRacer's user avatar
  • 12.4k
1 vote

Missing Vin number Doors replaced

I can't find a diagram for the Buick, but most vehicles I've dealt with have had a plate somewhere in the engine bay (usually either the inner wing, the rear panel or the slam panel above the grille) ...
Nick C's user avatar
  • 28.9k
1 vote

Can a year-old oil-in-coolant situation fix itself?

It should be quite easy for you to verify if the problem still exists through a quick inspection of the coolant reservoir or radiator. Oil-contaminated coolant looks like chocolate milkshake and has a ...
Zaid's user avatar
  • 39.2k
1 vote

How to stop the loud humming from brakes

I know this is a 5-month old question but someone might benefit from my answer so here it goes. I have a 2006 Mazda 3 that had the same problem right after I replaced the rear brake pads but retained ...
AGDS's user avatar
  • 11
1 vote

Heater cycles between hot and cold, overheating

You probably have air bubbles in the coolant, which were introduced when you flushed the system. You should bleed the cooling system. The exact procedure for bleeding is different for different ...
Mike Baranczak's user avatar
1 vote

2000 Regal only puts out warm air

A few things will cause "just warm" air. There's going to be an air diverter/mixer box that mechanically moves to mix cool air from outside and warm air from the heater core. You can normally hear ...
JPhi1618's user avatar
  • 13.3k

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