2002 Blazer - Low Pulsing Whirring Engine Noise At Start Up
Jun 8, 2012
I have an 02 Blazer w/ 110K miles. It's the 4.3L with 4WD. When I start it in the morning it usually has a low pulsing whirring sound for up to 30 seconds. It then goes away until the car is parked for a long time again, say overnight. It's a low volume sound, a lot like the sound of off road tires running down the highway. This has been going on for several months now.
All systems work fine. The alternator is new, the water pump has about 29K on it, and the top idler pulley has been replaced. Turning the A/C on or off makes no difference. The sound is loudest when you stand in front of the passenger side headlight which made me suspect and swap the alternator.
Could it be the belt? It was replaced with the WP and the ribs are not smooth inside. They are notched. I assume that's to improve the flexibility of the belt. If I take it to a shop they'll get 30 seconds each morning to diagnose it.
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Went to start the truck, turned the key - dash lit up, fuel pump primed, turned the key all the way and nothing. Truck did not even try to turn over, headlights did not dim, no starter, no crank.
I checked/tested the following:
-Battery and terminal connections - good fully charged 12.3v
-Ran battery charger on slow charge 10-15 min (quick) to full 13v
-Wiring to starter - good
-Relay box under hood - has power
-Starter relay - has wiring diagram on it - tested good.
-Every ignition related fuse in the relay box - all good
-Every ignition fuse in the driver's side dash fuse box - good
-I wiggled the ignition switch while turning every possible way - no crank
-I ran the gearshift lever through all the gears, tried to start it in neutral - no crank
-Rolled the truck a little, put in park - no crank
For some reason I decided to double check the # 24 RDO IGN fuse - it was fine. With the fuse still out I tried to start the truck and it STARTED!
I turned the truck off, replaced the fuse and the truck started again and, so far, ever since. I do not think the # 24 fuse had anything to do with it; I just got lucky.
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I've changed the fuel pump, spider, fuel regulator and checked all the relays and fuses. The only way this truck will start is to prime the engine with a shot of gas and then it will start and run great. Shut it off and NO Start.
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1988 s10 blazer 2.8 4x4 automatic. I just upgraded to a 3.4 v6, all machine work done, engine has all new internals. I have spark, i have fuel, but it will not start. I have checked the timing over and over, it is fine. I need a checklist or something to look for, all sensors seem to be hooked up and it still wont fire.
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Her vehicle is a 2003 Chevrolet Blazer, 4 door. It has a brand new battery.
She drove it to the store and came back home and shut it off. Within 5 minutes she tried to start it back up to move it and it won't start. When she turns the key, all dashlights come on, all gauges work and the engine is turning but won't start.
When the key is turned, I do not hear the fuel pump. But I've been told that in some vehicles you don't.
We removed the cover under the hood and took out the "plug" that said fuel pump (it was grey and had 4 prongs on it that plugged in) and switched it with another "plug" with the same numbers and it still does the same thing.
Hubby took of the black cover (think it was the breather but not sure correct name) and sprayed a little starting fluid and the Blazer started for a few seconds and would continue this until it burnt up the fluid. He looked down in this when I was trying to start it and he said that he couldn't see any gas being shot in it.
Could it be anything else besides the fuel pump?? Where is the fuel pump relay switch located and how can we tell if it is bad? I have no problem buying a fuel pump for my mom but I would like to know that it is going to fix the problem.
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I have a weird issue with my 2002 4x2 manual Nissan Xterra...when I drive along (usually happens when I'm in 3rd or 4th gear), and depress the clutch pedal to start slowing down for traffic, while the gear lever is still in the 3rd or 4th gear position, the rpms start coming down as the car coasts, but then a strange grinding/whirring/grumbling noise starts happening. The noise immediately goes away if I pull the gear lever into neutral, OR if I re-engage the clutch to start accelerating again. So, it only happens when BOTH the clutch pedal is depressed, AND the gear lever is "in gear". What could this be? The car has about 115K miles, but I believe the previous owner changed the clutch recently (80-90K), and the clutch itself feels fine.
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2000 Blazer 4wd, automatic, 122000 miles
In the last couple of weeks, if the Blazer isn't driven for 3 or more days, there is a slight knocking noise for 15 to 20 seconds after start up. Oil level and pressure are fine. I'm guessing it's the lifters.....
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I have a 1998 chevy blazer and I cant get it to start. I removed the starter and turned the key and can see the starter popping out and spinning, but when I put it back into the flywheel all I get is clicking noise(like if the battery is dead) I had it on jumper cables so I don't think its the battery?
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Think i have an exhaust leak in a 1999 s10 blazer lt 4x4 4 door. the loudest spot where i can hear the exhaust noise at cold start and idle, is the passenger side right behind the front tire. on cold mornings where you can see the exhaust smoke prior to warming up i cannot see anything coming from this area. non mechanic types have suggested either the y pipe, or where the y pipe meets the header. Would both have to be replaced to fix this problem if this is the case? and how intensive is this to fix? meaning would the whole motor have to be pulled to remove the entire exhaust piping to have it brazed? my dad is a mechanic, so the tools I've got and his know-how, just need to know what to do? Any definitive way to tell where an exhaust leak is, beyond having a friend cup their hand over the tail pipe, while they look for it..
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What could be wrong???
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1992 S10 Blazer, 4.3L, 4x4, TBI "Z"
When I start the truck, it idles rough, like it's idling too low, and even feels like it's missing during idle. Sometimes when I put it in gear (reverse or drive), it shuts off. No codes are being thrown. It has no problems driving around town or on the highway. It's just that initial start and idle.
I've checked all the following with a shop manual:
Ignition Control Mod.- Orig and 2nd one from junk yard. Both tested good at store. Even the testing in the shop manual with an ohm meter and battery tested good.
Ignition coil- tested good using shop manual testing
TPS- Scan shows .2-.7 at idle.
Plugs, wires, cap, and rotor are good.
Vacuum is good.
Haven't checked IAC, EGR
I recently moved cross country, and about halfway through, I broke down. Engine would turn over, fuel relay would click, injectors would work, but no fuel. Pulled it in to a truck shop, and after all my testing and theirs, we determined it was the fuel pump. After they had to fix a pinched hose, it ran. I made it to Texas. I didn't have the idle issues prior to the trip. Just had the tranny rebuilt and everything was great.
I thought, at first, the ignition control mod was the problem because it got a bit warm pulling the trailer, and I know those things don't like too much heat. No dice. So, what controls idle at Park and in gear but at idle? EGR, IAC?
I did a WinALDL scan. IAC at Park/Idle ranges from 18-55. The engine never runs in Open Loop. I would say the engine runs mostly rich according to the scan. I've attached a manageable version of the WinALDL data.
Also, I need to check the thermostat or temp sensor. Scan reads the engine never getting higher than 180.
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My wife has an 07 GX470. Two days ago she came home and mentioned there was a whirring noise from the engine. I started the car, lifted the hood and heard the noise. Sounded like it was being generated by the serpentine belt. Meaning, something that the belt was "driving" was making the noise. She drove it again yesterday morning for a 10 mile trip to drop off son at camp. When she came back, she indicated that it smelled. Just walking out the door to the garage I was hit in the face by a very strong electrical smell. No fire, but smelled very bad. Car has been sitting since yesterday morning and she just now tried to start it and the car is dead. no power to anything. Battery is new 3 months ago.
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Question to everyone who drives an Azera out there. This is regarding the 3.8 V6 engine.Does your engine make a whirring noise at around 2000 rpm? Sounds almost like a supercharger whine, starts at around 1800 rpm and continues up to the low 2000 rpm's. It's not a loud noise, only audible with low volume music or none at all.
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Upon arriving home a couple days back, a rather high pitched whirring noise commenced while idling. The pitched changed seemingly at random. So I popped open the hood and set about locating it, using the time honored scientific method of leaning over the engine, listening and moving around till the noise was most prominent. The noise has not recurred.
Seems to be coming from under the cover at the back. Area of interest circled in the 2nd & 3rd pics.
What is there, and if it might make a whirring noise. I am also getting a p0491 and 492 Secondary Air Injection Insufficient Flow, banks 1 & 2. Wondering if this could be the culprit for that as well.
Album -> [URL] .....
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I recently replaced the water pump, timing belt and all other belts in my 2005 Elantra. The car runs great, but there is a whirring/whining noise at idle when I have the car in park and in drive when I'm stopped at a light. You do not hear the noise when I accelerate and you do not hear the noise at any speed above idle.
At idle the whirring/whining noise can be heard whether the A/C is on or off. I have done some research and some causes for a noise like that have been a bad power steering pump, alternator, or pulleys.
The Elantra has 106,300 miles and gives me 26 MPG. I love this car. It has been the most dependable car I have ever owned. I plan to maintain it and hopefully last me for another 100,000 miles.
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Here is a link to the audio [URL] .... It makes this noise, whether I'm at idle or running, granted it seems to be happen more when moving, its quite intermittent as it stops sometimes. I replaced the serpentine belt a month ago, so it can't be that. Its coming from the front of the engine. Sounds almost like the fan bearings or something below that is scraping. I've turned off the heater and it still does it, but the fan is spinning all the time, so I'm not sure what is going on.In the background you can hear cars going by on the overpass above, but I'm focused on the grinding noise. Car is not moving, its in park and makes the noise when moving also, with gas or at idle.
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I just purchased a 2013 Ford Focus hatchback SE Monday night. Tuesday morning I came out of the house to get in my car, I unlocked the car, and opened the door. Before I even got into the car I heard a "scratch scratch scratch whirr whirr" coming from the engine. The dealer did not show me where the hood latch was so by the time I figured out how to open the hood the noise had stopped (within a minute of when it started.) Driving that day I did not notice any more noise, nor any issues with the engine.
Wednesday morning (today) I came out to get in my car, and when I opened the door I heard the same nose coming from under the hood. I got the hood open and looked in with a flashlight while the nose was still going. The noise was coming from the right hand side of the engine block, but I did not see anything actually moving to cause the scratching and whirring noise.
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I've got 2013 es 350 with 10,000 miles on now. I have recently noticed that there was whining/whirring noise coming from the engine(I guess) while accelerating up to 45 mph. It seems that the noise goes along with the RPM since it gets louder when accelerating. It makes same noise when decelerating from 30 mph and it goes away when the car stops. A friend of mine drove the car once before but did not hear anything until I told him about the noise, so I guess it is not very noticeable to some people. At the 10,000 miles check up at the dealer, I mentioned about it and they said they did not hear anything, but I know for sure there is whirring/whining noise.
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My 1999 Honda Accord is making a whirring noise sometimes. It happens occasionally, now more frequently than last month. It sometimes happens when I start the engine, but am still in Park. Mostly it happens when I'm actually driving. both slowly on back roads and fast on the highway. What would cause this?
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I have a 2006 lexus es 330 that just turned over 90,000 miles. My dad and I have done the regular maintenance on it so far but this weekend after a 3 hour drive, I turned the car back on and a loud whirring/humming/whining noise was coming from the engine. It gets slightly louder with acceleration, but I can barely hear it once I've picked up speed (but it's still there.) It still happens when I am in neutral. It sounds like it is coming from the passenger side of the engine. Close to the power steering pump area, but the power steering fluid is full (although it is a very dark/black color and has a slight smell...not sure if this is normal.) I'm not having any trouble or hesitation while steering. The rack is operating smoothly and it is not leaking. I plan on taking it into the shop but wanted to go in educated.
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I own a 1999 Toyota sienna that has 112,000 miles. For the past few months there has been a whirring noise that seems to be coming from the center engine compartment. It started quietly and now has increased in volume. It reminds me of a speedometer cable that is beginning to fail. I have taken it to my trusted mechanic for a diagnosis and he thought it was metal on metal noise from the transmission. I have owned cars for 40 plus years and have'nt heard of this type of tranny noise. What could be causing this? It makes this noise under power and when I release the accelerator the noise almost disappears. Also there is a clunking noise coming from the passenger front wheel after releasing the brake pedal when I come to a stop. I have replaced the strut,ball joint,and lower control arm bushing trying to remedy this. I cannot find anything else that is loose.
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