Question about 2003 Buick Century

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THIS HAS BEEN GOING ON FOR YEARS,IT STARTED WITH IT NOT WANTING TO START WHEN I MADE A FEW STOPS,ENGINE WAS HOT. NOW IT DOES IT WHEN IT'S COLD & HOT . THE STARTER,IGNITION,COMPUTER,FUEL REGULATOR,& SOME OTHER PARTS HAVE BEEN CHANGED & I STILL HAVE THE PROBLEM.ANY IDEAS WHERE TO LOOK NEXT WOULD BE GREAT.

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Go on line to the National Highway and Safety Administration(NHSA) and see if they have ant Technical Service Bulletins(TSB's) for this vehicle's particular problem. If they do bring this to the attention of your service station.
I had one of these vehicles several years ago did same thing drove me crazy turnes out to be main engine relay.
I used a scope meter and traced B+.'s travel upon crank and start up it went into the relay from ignition switch but never exited to make it to pump relay and ignition.

Posted on Aug 24, 2010

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2006 kia sportage hot-temperature gage went to extreme hot & stayed there, then dropped to all the way cold/checked oil & it was hot/almost smoking. car started but then quit. not fixed yet.


Unfortunately for some personal reason, you chose
to use your vehicle, knowing the coolant was being lost.
You should have have it checked out when you first
noticed any problem & now you have run the motor
low on coolant,overheated every fluid
The cause!! Could very well be you have a bad head
gasket & not thinking you had a serious problem
Now you do & it will be an expensive repair,involving
fees for testing, to find the issues & no way to know
the possible damage to the engine & especially the
cylinder head,to the point you may need a complete
reman motor, if the damage is bad enough to make that the best solution
Unfortunate, as I consider a 2006 a fairly new vehicle,especially
if you bought it new.
Lesson learned the hard way
Fluids start to go away,stop using it
Don't change Transmission & Power Steering
Fluids every 3 years-they will fail,fluid breaks down
& no one changes them
Don't change motor oil every 3 to 4,000 miles,
other issues on some vehicle. that's 4 to 5 times
a year,alot of your time & expense,but it has to be done
on all vehicles,brake fluid every 2 years or more rust,
& moisture in that system & big repair bills.
You could have a bad thermostat stuck closed or an
easier to solve & less expensive repair to make,but you
cooked that motor,so be aware of that

Jul 21, 2013 | Cars & Trucks

1 Answer

Ac


You would need to find out if the compressor continues to run when the cold air stops.

Jul 17, 2013 | 2000 GMC Sierra

2 Answers

My car won't start in the cold weather. I don not have Power Locks or Power Windows. What is the Problem?


That sounds like a battery issue. Batteries have whats called CCA (cold cranking amps) it is the main thing to pay attention to. This is a measure of how much current the battery can provide at 0 deg F. Batteries work better when they are warm, so the colder it gets, the less current it can provide.

Starting an engine requires a lot of current, over a very short time. Meanwhile, cold engines are harder to start, requiring more power to get them going. So look at your battery and its CCA and since u said u bought the car a few years ago. You probably didnt replace the battery yet have u? Batteries usually have a life of 4-6 yrs only. Hope this helped

Jan 23, 2013 | 2003 Saturn ION

1 Answer

1997 Mercury Villager Temp all of sudden shot up to Hot and ac started blowing warmer air? needs


Personally I woulod get rid of any van,I wouldn't take
a brand new on for free

I think you have you know we can't guess at much & you
most like have the start of a head gasket issue

The transaxles on those are the worst ever made,the failure
rate is real bad

Have it diagnosed & don't get put any money into it

It's a van,15 years old,Ford Product with issues

You got nothing going there

Jun 17, 2012 | Mercury Villager Cars & Trucks

1 Answer

I have a 2004 Jeep Grand Cherokee Laredo 4x4 with the 4.0L. It has approximately 150k miles on it. I started the Jeep with 1/4 tank of fuel in it and it started rough and acted like it was going to die....


long post.
ill reduce it for you.
misfires. (is RPM below 700 then misfire can be normal) for idle speed controls dead.
ISC the isc controls speed, of idle,.
mine stuck like zillion times, in 400k miles. endless.sticking
mine was a tiny gutless stepper motor drive ISC valve.
the cone valve is side gets nasty and sticks (
(PCV gases caused as seen on all engines)
i clean it.
the proof is the easy press of right foot easy raises idle back to 700rpm and engine stops misfiring.
ever get a tuneup this decade or running spark parts 500,0000 miles
for the new world record.?


now the tricky part of ISC, , fully explained in the SM serv. man.
the PCM learns its behaviors.
it learns all hot start settings and cold
so when you key on, it goes to the correct HISTORICAL spot.
if it can move there(sticks) engine car race.
or run too slow,
cold start would be worse, as hot isc is more closed
so if sticks there closed, the next cold start will be horrid
some newer manuals telly you to add 5% throttle if car is hard starting this is so common.

clean it. end story.
ISC

Mar 09, 2017 | 2004 Jeep Grand Cherokee

1 Answer

Car overheats and AC stops blowing cold, then temp guage eventually goes back down and AC starts blowing cold, after a while overheats again and AC stops blowing cold again. problem just started after a...


Your AC system is supposed to shut down if the engine is hot, as a safety device-make sure when the ac is running , the radiator fan is blowing-it may not be, caused by either a bad relay, blown fuse or a bad fan motor. Make sure your antifreeze is fully up to level, and if you haven't done it in the past 2 or 3 years, get the cooling system serviced with a new thermostat-cheap insurance, you do NOT want to overheat that aluminum engine, because if you do, it will be toast.

Jun 23, 2011 | 1999 Honda Accord

1 Answer

1999 Lincoln Navigator stops blowing hot air


Since your blower is working and it is a heat issue,thats where we'll start,First thing is have you checked the coolant level in the radiator when engine is cold,make sure it is filled to top,next verify you have coolant in reserve ,Start your van and get it up to normal operation temperature,If your heat gauge on the dash works correctly it should be 190 degrees,Now lift the hood and locate the two heater hoses going into the heater assembly at the fire wall,Both hoses should be hot to hold on to,if both are hot and no heat inside your problem will be the blend air door in heater assembly.
if neither hose is that hot you need to replace the thermostat in the engine to get it up to 195 degrees.
if one hose is hot and one is luke warm then the heater core is blocked and to blame. hope this helps you.

Jan 01, 2010 | 1999 Lincoln Navigator

1 Answer

2001 Toyota highlander(4cyl),turns over,won't start afer few spins.Then,it will finally start.Has always started(fired)immediately- pumped gas a couple of times and it will finally start-runs fine-any...


Your cold start valve is not opening to assist the firing. It function is to provide extra fuel to ignite the all combustion chambers easily. When the engine doesn't have this extra fuel from the cold start valve, it will take a few times to get it going. The cold start valve is turned on at the time of starting only if the ECM get the signal from coolant temperature sensor saying it is at a preset level. When the sensor is bad, it can give a wrong value so ECM think that temperature is hot so not turning the Cold start valve. Replace this coolant sensor first, then the next thing is to check out the cold start valve.

Oct 29, 2009 | 2001 Toyota Highlander

3 Answers

Car not starting after car runs for a while and weather is hot


have the starter tested because it sounds like a bad solenoid in the starter and it makes it get hot so it won't start

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1 Answer

My 2000 Dodge Durango doesn't want to start...


it sounds like the starter may be going bad

Nov 13, 2008 | 2000 Dodge Durango

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