Toyota - 4runner :: Pinging / Knocking On Hard Acceleration
Jan 28, 2012
I have a 98 Toyota 4Runner, which just started what I'm told is pinging or knocking on "hard accelerations", like accelerating on the merge lane when I see cars coming up behind me in the lane I want to merge into, or going uphill. i have 258,000 miles, and have the SUV serviced regularly and get things fixed when they need it. I told the dealer about it a month ago when I had regular servicing, and he did something to clean the fuel injector, and suggested I try 89 octane (he specifically recommended Sunoco), and if that worked I could try going back to 87 octane (Sunoco was his recommendation again). I did as he suggested, and the pinging/knocking seemed to get better with 89, but returned with 87. I read the Q&A on this, but still have questions. Why did this just start after 14 years? Should I do anything about, in other words is it harmful? If so, what should I do? Does the brand of gasoline have anything to do with this, or anything else for that matter? I am hoping to keep the SUV for a couple more years (300,000 miles), maybe longer.
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My 2001 Corolla w/80k developing a considerably loud spark knock/engine pinging noise under acceleration. It throws no codes but pings like crazy and it never used to. It's happened gradual over a long period of time. I've cleaned the throttle body and have done all regular tune up items with no improvement. It doesn't ping at all on 93 octane, does some on 89 and terribly so on 87. Why is this? Does the 93 octane just act a a richer mixture of fuel to alleviate the ping? Should this sign point me in the direction that it's definately a lean issue causing the pinging?
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My 4Runner has begun hesitating sometimes during acceleration AND immediately after acceleration. It feels like it is "chugging." This usually also happens in the low end of gears (it is a manual 5 speed). I do not believe it is the transmission as I do not notice it slipping at all. It has been 90,000 since the timing belt was changed, which I plan to do soon. Could it be an injector issue? Maybe a cylinder is not firing? The RPMs do not seem to change much when this occurs.
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I have Toyota 4runner 1996 4 cylinder. it was running good (from time to time I would lose power for 2 to 10 second than it go back to normal acceleration). I had the check engine light on for almost 8 month. last week I took the car to mechanic shop for diagnosis. the mechanic changed the spark plugs and after that the engine lost power. the car cannot go over 30 or 35 mile per hour. He changed the spark plugs and put different ones, same thing he put the old ones back same problem, he changed the wires, the fuel filter, air filter, the distributor and rotor, but still the same problem. the problem is that the check engine light is off now and there no codes.
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Along with the many other quirks of my 98 Toyota 4Runner, whenever I have to hit the brakes suddenly and hard it takes my car at least 30 seconds to become responsive to the gas pedal. When I try to accelerate, I can hear the engine rev, but the car doesn't move. Is this a brake issue, or could it be a transmission issue? I have 230k on it.
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My 1987 Toyota 4Runner 22RE has a weird cold starting issue. When the temperature is in the low 30s F or below I have to use the gas pedal when I first start it (for only a few seconds) in order to make the starter disengage. If I don't push the gas pedal it chugs at around 250 RPM and the starter remains engaged. If I kick in a little more gas (up to about 1,500 RPM) the starter will immediately disengage and then it runs just fine at around 800 - 900 RPM.
When it's warm out (40 F or higher) it starts up and runs perfectly without any of the aforementioned happening.
Maybe related is the following: when the weather is warmer out this SOMETIMES happens: the engine idles too high (1,100+, sometimes up to 1,700). If I "kick" the gas pedal this usually knocks the idle back down but not to 750 - 800 where is should be.
I have thought about replacing the (I think it's called) idle air control valve (the big metal thing with the flappy gate inside) that sits atop the air intake above the driver's side headlight I want to replace this only if it's going to fix it.
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Diagnosing the following behavior with a '99 4Runner.
A couple months ago it was hard to start and the battery wasn't fully charging. It cranked but not very strongly and took a few times to turn over. The battery was old so I figured it was bad and replaced it.
Everything was fine for a couple weeks then it started doing nothing every other time I'd turn the key to start. All the dash lights and everything would come on but when I turned the key to start, it wouldn't even click, nothing. When it would crank, it started up fine. After a while it started taking 5-6 attempts to engage the starter and eventually like 20-30 and then wouldn't start at all.
I check the battery with a MM and it was reading 3.5v! I pulled the leads off and the voltage started to rise, after about an hour it was up to 8v. But when I put the cables on it immediately drops back to 3.5v. I pulled the fuses one by one, reconnecting the batt cables in between to see if I could isolate the circuit that was causing the drop but no luck. There were a few fuses that were bolted in that I couldn't get out though.
Anyway, there must be something that ties all this behavior together, maybe a bad relay or something?
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My GTI knocks everytime i acceletate hard from a full stop. The car is chipped stage 1+ from unitronic, apr intake. Everything else is stock, 80.000 km. the sound comes from the front right wheel. I believe it is a top plate, but I'm not too sure.
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I have begun to notice a "Knock" or "rattle" in the engine. I know diesels have a tendency to sound like that just from running but that sound is more of a "cackle" if you ask me.
I can hear the "knock" most noticeably at hard acceleration or taking off in general. It can also be heard during idle and every so faintly at deceleration with the torque converter locked so it makes me thing its mechanical due to the nature of the way the sound is audible.
I believe the sound is coming from the passenger side bank as that is where I can hear it the best with my head under the hood. I have a code reader and checked, I have no visible codes other than it telling me about secondary fuel circuit high which I suspect was from showing off with my friends.
I did a cylinder balance test and again got 3 (PO269) and 8(PO284) which I have been told are very common.
I checked my ICP readings and it was 500~ and 11%
Pulse width for injectors was 2.50~
I did a KOER test and received no codes
Glow Plugs showed okay
KOEO (PO605)- Internal Control Module Read Only Memory error.
Exhaust Absolute Back Pressure was 16.2 at Idle with MBRP 4" Turbo back.
Also, I have noticed a drop of about 5-10 degrees in my oil temp and about 100 degrees drop in my EGT's although it has been pretty cold here recently (32 degree oil temp when I started her at 2 in the afternoon)..
I think it might be a bad piston skirt? I am guessing that from my experience with motorcycle engines but these are a totally different beast and that is why I am here...
I have 634,000 Miles and from what I have been told the engine has never been broken into so I would expect something like this myself. I am mostly looking for a place to start. Should I pull the oil pan and look for debris? (Oil was clean last time I changed it less than 2000 miles ago).
Should I pull the passenger bank apart and look inside? Is there a chance I am just hearing the noise due to the additive wearing off and me being used to the quieter engine?
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I took my car into the dealer to have them check out the loud knocking/pinging sound from the engine. First time, they told me that it was normal. It bugged the heck out of me so I took it in for the second time. Note: I was given a loaner to drive and it happened to be another 06 Passat 2.0T and this one sounded fine to me. The lead tech did kind of agree that it was a bit loud. So, they replaced a new fuel pump and did an oil change....?? But that of course didn't fix the issue. The noise is so loud that I can hear it inside the car w/ windows up when I'm sitting in traffic or at the light. Also at night, I can hear it when I'm standing about 15 or 20 yrds away from the front of the car.
I realize that the engines will have some sort of knocking sound (my 330i does that), but shouldn't be this loud. So, does this sound normal? BTW, the dealer told me that they contacted VW engineers and was told that it was perfectly normal. I don't really buy that!! I've only had this car for almost a month (took advantage of the CPO w/ 2.9% fin) and I don't want to have to deal with this if this seems to be an issue. I guess who does, huh?
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I recently changed my oil, transmission fluid, and both coolant systems. I have a 2008 Prius, and I can hear this noise coming from the engine when I accelerate between 50-70 MPH or have the cruise control on.
I had low coolant in the ICE system earlier (didn't know there were two separate systems) and I had the red triangle light up for a moment and "Problem" appear on the LCD screen followed by an orange thermometer. I pulled over and let it cool down, and babied it home and added coolant.
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My 2003 Ranger 2.3L When I purchased it in 2005 I never noticed this tapping noise until in 2007 when Tennessee forced 10% Ethanol added to fuel. That is when the noise started.
What this could be. I have since moved to Texas and found a station that sells Ethanol Free gas, but that does not remove the noise.
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My Accent has 89000km (about 54000 miles) and has been pinging under acceleration...tried higher octane gas with no improvement.
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Recently I started to hear engine pinging/knocking-like noise when the hybrid battery level becomes low like two bars and the car starts a charge cycle. I also hear it occasionally when I accelerate on uphill. Is this normal or should I take it to a mechanic?
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I have been experiencing pinging and crackling noises on acceleration from my vehicle it was purchased from the dealers May 2012. The problems started in October and I have been back and forth with the dealers for the same problems over and over and getting additional problems. Not to mention they keep saying that the problem is fixed and as I leave the compound I hear the noises.
I took it to have an independent scan from the dealer as it is now 5 months of run around with the issue not being resolved and I found out I have a bad ac compressor, steering rack and shock mount.
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Our 2007 Ford Ranger PJ 4x4 3L diesel automatic pings slightly on acceleration when the engine is not loaded. When pulling a caravan it pings very badly for an extended time. I release the throttle slightly to stop the pinging. If the EGR is not functioning, engine light on and scan tool displaying code 2143, there is no sign of a ping under any conditions. I did need to replace the Timing Reference Sensor on the flywheel housing due to a fault.
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I'm having a problem with my Prius. It pings under acceleration and it sounds like something metallic is rattling. It only happens when I use 87 and 89 oct. I use 91 premium to reduce the ping however, gas prices are rising and I want to go back to 87. There are no warning lights or anything and the ping has been happening for quite some time now.
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I have a '91 Camry that's my daily 50 mile round trip commute car. It runs well and still has lots of pep at 156,000. There are oil and tranny leaks (tranny leaks around the pan seal) but I check the levels and keep everything topped off. Tranny fluid and filter were changed about 20K miles ago. I am the original owner. Shifting is OK unless I accelerate hard, then it "bumps" into gear. On hard acceleration it is a pretty good bump but if I back off the gas it shifts much better. There are no other symptoms, at lower speeds it shifts fine unless the A/C is on, then I get bumps above the 1-2 shift. What the problem is?
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My Jetta wagon with 131K on it has a ping when I accelerate hard. I know it's not bad gas, but probably a carbon buildup. I've done a few seafoams that had some effect, but not much. I'm gonna do the water spray/steam next. Which components are prone to carbon buildup in these gassers that would cause ping?
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I have a 2012 Toyota Camry le and for some reason it's been pinging on low RPMs. I've tried octane boosts and a cleaner and for some reason it's has the problem.
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I drive a 2004 Toyota Tacoma 4x4 and wound up doing a bit of unexpected rock crawling on a recent camping trip. After a whole lot of cussing and praying I got out with a couple of dents. Since then, I started to notice a strange noise. When I shift from 2nd to 3rd (~2500 rpm) and start to accelerate, I hear a metallic grinding/pinging for roughly a second. The clutch is fully released and it happens whether or not the engine is hot. It's the 2.7 liter 4 cylinder.
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