Last post on Apr 01, 2013 at 10:36 AM
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Toyota Tundra, Truck
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#63 of 83 Re: Piston slap is the "diesel" sound you hear when cold [Mojaveman]
Feb 20, 2009 (10:16 pm)
To All you gentlemen who are posting messages reference piston slap during cold start ups, and piston slap during low rpm acceleration.
1st--I spoke to a 20 year mechanic about engine oil type for my 08 5.7. I was told that these new high tech engines(especially Toyota) have very small and narrow passages in some parts of the motor, which make it difficult for oil to pass thru especially during cold start ups. That would explain the ping while cold. My 08 revs high during start up, but I do not hear a ping. I use a FULL synthetic oil..
2nd--As far as piston slap during low rpm acceleration, that sounds like a fuel octane problem. I dont care what anyone says(or any manual says), use 91 octane in your tundra. You must be running BAD fuel in your tundra. Use fuel from Chevron or Shell.
3rd--My last suggestion. Do to your tundra what I did to mine. ( Let me clarify that at no time have I ever experienced piston slap during start up or during low rpm acceleration). For several months, I researched a cold air intake system and a plug in computer chip for my tundra. Understand that these tundra's are equipped with stock air filter systems that ARE A JOKE. The engine can't even breath. No wonder it only gets 13mpg in the city and only has 381hp stock. I removed the stock air filter system and self installed an AFE cold air intake box in 1 hr. I already felt a noticeable difference in throttle response. And you know what MORE COLD AIR entering in the engine means--better gas mileage, more hp, and more torque. Then I put the icing on the cake by self installing a plug in UNICHIP computer chip to the tundra's ECU. Understand gentlemen, these 5.7 motors can generate tremendous horsepower and torque, but are tuned DOWN to meet safety standards. The tundra stock computer chip is programmed to allow the engine to generate only a small portion of its capable horsepower, torque, and gas mileage. (THEY GOTTA KEEP THE OIL COMPANYS HAPPY BY MAKING SURE YOU FILL UP YOUR TUNDRA'S FUEL TANK AS MUCH AS POSSIBLE). The UNICHIP I installed safely tells your stock tundra ECU to produce way more hp, torque, along with increased gas mileage. These 2 totally safe modifications to your tundra will cost you about 1100.00, will not void any factory warranty, are do it yourself projects, and will allow your tundra engine to effeciently breath and burn fuel. What does it all come down to?? At least 37-40 more HP, at least 35-40 more TORQUE, and a 2-3 MPG INCREASE. AND VERY POSSIBLY NO MORE ENGINE PING due to stock air intake system...
Feb 24, 2009 (8:07 pm)
Bet they got that sludge... that is the way of them ones now. Good luck on this one now!
#65 of 83 Re: hard starting,will not always idle [luke21]
Mar 02, 2009 (3:39 pm)
I have had the same problem. Mine is a 2000, 4.7 V8 with 110K. Yesterday morning the battery was dead for no apparent reason - jumpstarted it - idled and drove fine until I stopped to make a turn and the engine died. It restarted fine, and runs, but won't idle on it's own.
Today the battery was dead again and wouldn't take a charge. It was VERY old, so we replaced it. This did not solve the idling problem...
My fuel filter is only 4 months old, I don't think that is the problem. Would an O2 sensor cause this?
Already scheduled for some maintenence on Wed. I'll let you know what they tell me about this Luke.
Any other ideas or explanations would be appreciated before then.
#66 of 83 Re: hard starting,will not always idle [washu64]
Mar 06, 2009 (12:51 am)
my guess is that it is the idle air control, I read sometimes they stick. let me know after you're maintence check. Thanks.
#67 of 83 Re: 2007 Toyota Tundra 5.7L High Idle [Mojaveman]
May 22, 2009 (9:10 am)
Are you still following this discussion? I'm interested in your reply, if any, to posts after yours.
Jun 26, 2009 (9:39 pm)
I started to get rust spots on my rear bumper on my 2008 tundra . Anyone else hear of this problem
#69 of 83 Re: supert [supert]
Jun 28, 2009 (9:56 am)
Are you sure they're truly "rust", or are they maybe "environmental" or "rail dust" deposits? If they're rust, the spot typically has a tiny center "pimple" with a dark brown ring that develops around it. Environment deposits are just like a hard little speck of medium brown sand grain, no ring or "halo" around them. Another check, with the truck washed, run your hand over the vertical part of the bumper and then the painted tailgate surface near the bottom. Do they feel about the same? Then it's probably environmental deposits.
#70 of 83 Re: supert [webgood]
Jun 28, 2009 (5:09 pm)
They just replaced my brothers on warranty at sherwood park toyota. Alberta. I am expecting a recall or tsb on this.
#71 of 83 Re: supert [supert]
Jul 25, 2009 (4:12 pm)
Rustin and bustin... that is the way of them forien ones now! If you need one for workin.. and lastin long... look to them big3 ones now. Good luck on this one now!
#72 of 83 Re: supert [supert]Tundra issue please help
Jul 25, 2009 (7:04 pm)
Do you mean they replace your brother 5.7l tundra engine for the knocking sound? Hey can you email me the details of the rep. or tech that Ok'd the work at msportraitssalsburystudio.com I will drive to Alberta to get my engine fixed there if thats the case because my dealer is giving me the run around .