IS F (2008-2014) :: Coolant Go From High To Low Mark When Engine Started And Warmed Up
Dec 10, 2015
My coolant was right below the low mark (it was right above 1k miles ago so it has a slight leak, but haven't checked the bottom core yet, most likely its leaking there?) so overnight it sat and in the morning ive filled it to the high mark and upon starting and warming up the engine the coolant went back to right below low. It doesn't look like its leaking at least not anywhere that fast, is this normal? I gotta check later again while car warmed up etc to check level, but how can the coolant go from being at the high mark to right below the low mark?
Regardless the radiator had previously been repaird by the lexus dealership for leaks, where it should've been replaced. Luckily lexus said they will take a look and replace, but Id rather not go through the dealership.
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About a week and a half ago I took my 2008 ISF to Lexus to have them check out the ticking noise. My car has 63K miles on it and I notice the ticking noise after it is fully warmed up. I normally have just been driving it in Sport-Manual too. The sound seems to come from the driver's side fender well area and I hear it best when it is in drive in my garage or at a drive thru.
At first Lexus couldn't duplicate the sound even after driving the car. So I went to the dealership and drove the car about 10 mins for them to hear. The service advisor and a technician heard it this time. They had to call the regional Field Technical Service rep for direction on how to proceed. The FTS person recommend swapping the driver's side high pressure fuel pump to the passenger side to see if the noise followed the pump. I guess they've had problems in the past with the high pressure pumps on the LS models. I again went down to the dealer to drive the car and the noise stayed on the driver's side.
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I have a 2013 F150 FX4. When the temperature is below 45 and the truck is cold the right high beam wont turn off if used, until the truck engine is warmed up.
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I have an '08 Ranger, automatic. For the last several months, the truck has been making an intermittent high-pitched squeal/whine, but only after it has been warmed up (10--15 minutes driving) and only while it is idling. As soon as I'm driving, the whine stops; whine will occur both in drive (but stopped) and in park. The whine will not happen every day I drove, nor will it happen at every stop. When it does squeal, the squeal will fade in and out in volume.
An interesting kicker I've found recently: it seems to be dependent on electrical draw. For example, if I'm sitting idle with the lights on, and the truck is squealing, and then I turn the lights off, it suddenly squeals less. Still squeals, but less than with the lights on.
I have had mechanics check all the usual suspects, belts, etc, but have not found anything amiss. Nor can I actually get the squeal to occur when I visit the mechanics.
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I have a 2004 Toyota Corolla, with about 175,000 miles, and recently the heating system has been acting up. About three weeks ago the heat started to be slow coming, even when the engine was warm, but after a bit of driving it would kick in. The blower would work the whole time, but it would blow cold, instead of hot. However, no even that amount of heat has subsided, and the blower only blows cold air. On top of that, within the last week or so the engine has begun to almost overheat early in driving, but settles down a bit after driving a few miles. What might be happening?
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Usually after I run the car in manual/sport mode, I begin to hear a high-pitched 'hissing/whistling' noise coming from the engine. It sounds like a vacuum leak. It is audible while driving with the windows down.
I am having problems pin pointing the source, but it sounds like its coming from the center block. What is the right direction to the leak? It starts exactly at 1500 and cuts off at 2200 rpm (while in gear). 1500 to 3000 rpm while in park..
I have a Takeda intake installed and I re-tighten the fittings.
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I've been using my prius 2008 very smoothly till today. It was 100F+ in Austin and very hot. The car, suddenly lit up all the warning lights: Engine, Red Exclamation, Hybrid, and brake lights. The brakes kept beeping on both sides. I also heard an engine noise that is quite uncommon for prius. I stopped the car in a parking lot.
I came back in an hour and tried to start the car. I only saw 2 lights now: Red Exclamation, and Engine check. It might some "click" noise when I started, and after that it was fine. I drove for a while and everything was fine but the 2 warning lights were still on. I tried starting and stopping few times. I did experience the clicks (1-2) and the engine noise. The engine noise lasted 15-30 seconds and then it was back to normal.
I followed the youtube video to look up the diagnostics (Display pressed + lights on/off 3 times) to check the 12V battery. It read 13.8 V. I recently had an oil change at Toyota dealership less than 500 miles back. So I am baffled at this point. I have about ~60K miles and it's a 2008 model. So if it's a hybrid battery issue, I am covered.
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This morning I started my 2008 Prius (approx. 31k miles) and found the big red triangle with an exclamation mark and check engine light turned on.
I drove my car <1 mile to a smog check station where they ran a diagnostic on it and came back with the P0A9C code.
A quick internet search turns up that this is "HYBRID BATTERY TEMPERATURE SENSOR "A" RANGE/PERFORMANCE."
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A couple years ago noticed the coolant + inverter reservoir was on the low side. Took it to the dealer who pressure tested it and didn't find anything wrong, added a bit, and said good to go. Roughly 55,000 miles.
Today at close to 85,000 miles the coolant in both the radiator tank and the inverter is again touching the "L" mark. They were filled up to the middle/almost topped off after the dealer visit.
Just curious if others have had this issue and/or where to look. I haven't touched the coolant since purchasing at 42,000 miles in 2011.
This is the only issue I've had with this car so far. But it scares me, as coolant loss can be a big deal! Something as small as this isn't as concerning unless it's leaking some place I don't know about, or being consumed in the engine.
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I have had my certified 2010 Prius since June 2015. Last Saturday I noticed my inverter coolant reservoir was on the low mark. I went to the closest dealer and they topped it off up almost to the full mark for free. I thought it had probably went down from evaporation and I just hadn't noticed it before. Yesterday I went back to the dealer where I purchased it which is about 90 miles away to have the CVT fluid changed. This morning the coolant was back down to almost the low mark. I looked on the ground and can't see any evidence of a leak. Tomorrow I have a appointment to have them check it. Since it is still in the one year certified warranty I don't know how motivated they will be to find the problem when they can't charge me for it. I don't think the level would have went back down right away if there wasn't a leak somewhere. I checked and there have been no recalls done or called for on it.
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My maintenance light started flashing @ the 4500 mile mark so I checked the oil and was half a qt low. I was a bit surprised. I was not at any type of incline and I drive pretty light. Def don't drive hard. Normal or no?
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Went to a road course for the first time on Sunday. After about 10 laps the car started smoking bad from the exhaust. The smoke was thick and white. There were professional drivers present (driving school) as well as a lexus service manager there looking at the car after the run. The smoke was thick but without that sweet smell of coolant. This was the hardest the car has ever been run but also maintained normal oil and coolant temperatures. After a bit of resting the smoke cleared up and never came back, my drive home was 2 hours long and car still seems ok. Engine sounds good, oil very clean, what could it have been? I have no cats so its going to be more obvious than normal.
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I recently did the NAV/DVD bypass. It worked fine and still does. Although the check engine and check VSC warning came on eventually, I reset them and did not recur and all is fine with the bypass not activated. After about several days or a week later I tried the CD player and the audio started cutting out as well as no audio from the DVD. All CDs and DVDs worked before. AM/FM/SAT/NAV audio works fine. But DVD/CD has no audio.
I found that DVD/CD audio go through the optical S/PDIF (spdif) cable. I checked it behind the unit and it looks fine, undamaged, not bent. I have not checked it on the amp side yet. Also I do not know if there's anything in between.
What the S/PDIF cable line consists of?
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So my heater hasn't been blowing much hot air recently. When I'm at idle or just cruising around it blows cold air, I have to bring the rpm's up for a bit for it to finally get hot air but if I just drive normally the hot air turns cold again. I looked around and found the issue where if your coolant is low than the heater won't work and I checked the coolant level and I noticed its way below the "low mark". There's some left but it isn't much, it's pretty much at the bottom. My question is do I have a leak or can coolant get that low on its own? I've never noticed liquid on the ground in my garage or anything.
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Experiencing a hairline crack on the coolant overflow reservoir?
I noticed a bunch of dried coolant during my last oil change, ended up tracking it to where the upper radiator hose meets the reservoir. It's leaking a few drops per week, but it's enough to be irritating. I was only able to catch it by feeling the underside of the hose.
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Was doing nitrous passes the other day and all of a sudden the car started to lose power. I let off the gas and the rpm's got lower and lower, until I cut the car off. Let the car sit for a bit and tried to restart. Car will turn over but will not start. Threw two odes p0300 random misfire, and p0101 mass or volume air flow circuit range/performance problem. I also smelled slight burning for just a second. I am thinking it has to be MAF or a burned up plug. Has to be air, spark or fuel related. Any of the nitrous guys out there ever run into anything like this? Want to eliminate the small things first. Hoping there isn't a larger issue.
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I noticed a bunch of dried coolant during my last oil change, ended up tracking it to where the upper radiator hose meets the reservoir. It's leaking a few drops per week, but it's enough to be irritating. I was only able to catch it by feeling the underside of the hose.
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I have a 2011 ISF with 41k miles on it and yesterday I noticed the famous dried pink coolant below the water pump. I thought it only impacted previous years but apparently not. I'm going to drop it off tonight at the dealer since it is still under warranty. Doesn't look like the job has been done before according to Lexus service records.
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There is a black mark in the middle console near the cd player. I don't recall how it got there, but if this is a scuff mark that I can rub off, or if it is the paint or something below and the silver area was rubbed off.
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Under acceleration when close to the limit of adhesion during high speed long sweeping turns I was noticing an oil smell last year. I can't say if it was R, L or both turning directions since its been a full winter since I have driven the car.
I'm using Mobile 1 5w30, a stock air box and I have headers. I'm also running 305 PSS tires, and a pretty well modified suspension. I have no facts to back this up but I am assuming because of my setup that I can get a little more lateral acceleration then most.
I have zero oil consumption, no leaks and good test results from Blackstone. My only thought is that I am pushing a little oil in to the crank case breathers during this hard cornering.
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My van will rev really high when started and may stay that way for most of the day. Sometimes once it is turned off it will restart just fine. but when it is revving like this you have to hold the break down at stop lights, constantly slow down because it wants to take off. Now it is stalling when driving slowly. the throttle positioning censor has been replace a couple of times.
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