I have a lil problem where my motor is now knocking at low rpms and its misfiring at high right before it shifts and it sounds like its pinging......any one ever had this problem or any one know of a mod friendly dealer in miami............do you guys think ill get a 2002 or 2001 motor in my 99 now cause of that........i really think its a piston slap.............i have a 5 lbs pulley air raid intake diablo chip and a diablo shift kit...........any ideas on the matter in what could be the problem or what to do to resolve it...........IM HAVING A BAD DAY!!!!!!!

 

help any one??????

 

Just out of curiousity, are you running the stock spark plugs? Did you have the chip reburned for the 5 lb. pulley? Have you heard it knocking or pinging prior to this? Does it constantly knock or just at certain RPM ranges?

 

How's the weather down there in Miami? When it got "cold" here in Houston my truck started pinging. When it gets warmer, it stops.

 

Same as Madhouse. I buy the "Penzoil Outlaw" MMT based octane booster kit (four bottles for $10, at Autozone) for those cold days, and I save my bottles to add an additional 3.5 oz of Turner Lab's octane booster as well (nitrobenzene) for those super-cold dry days. Detonation will be more prominant on, cold, dry days for chipped vehicles with increased air flow and esp. a pulley.

Also consider a 160F stat (Autozone - order a Hypertech 1011) $22.00 this will lower the engine temp, and increase your A/F ratio (richer)

 

I would pull the plugs and check them to see if you've burnt the end off one or more of them. While you'got them out you might as well change them. I don't know what you are running now but if your running the stock plugs get rid of them and get you a colder plug. The plat. plug also holds heat worse than others. With a 5# pulley I would suggest to go with a NGK TR5 or the BR7EF. The Hypertech Thermostat is a good idea also like MOP has suggested. Let us know what you find, with a little more info I'm sure someone here can help.

 

MIAMI??? Fat chance!

But try two places.......Maroone Ford in Ft. Lauderdale, or Maroone Ford in Coral Springs........you shouldn't have any problems at either one.

If you go to Ft. Laud. talk to ****; he's the shop foreman. I don't remember the name of the guy in Coral Springs, but he's one of the Service Managers, and if I'm not mistaken, he has an L himself.

Hope that helps,
JC

 

well i just got my chip reburned last night for a little less timing and more fuel and to tell you the truth the truck is 10 times faster now........i dont know what happened......but its still pinging a bit.........i guess it must be the cold weather because the file is a warm weather program.........but wow what a diffrence hopefuly when it gets warmer it will quit pinging.......and also i do have the stock plugs and stock thermostat.....just waiting for the diablo sport electric fan kit with already comes with the termostat.....and cant afford plugs right now cause i just bought the new 555R's for my truck..,...........best investment you can make fo rthese trucks.........IT HOOKS.......!!!!!!!!!!!

 

you should change the plugs. stock plugs dont work well with the extra boost of the pulley. ask anyone on here. they should be changed

 

SS,

What's the old adage about "Step over a dollar to pick up a dime..." Now's certainly not the time to cheap out and hope for warmer weather unless you don't plan on driving your truck until then. I highly suggest you pony up and spend the $15.00 on some NGK's at least...you can buy Densos later if you want to go that route. Those nice sticky 555R's aren't going to do you any good when your truck is sitting in your garage because you lunched a motor when the stock spark plug electrodes broke off and started "floating" around your combustion chambers.

Dan

 

ANY ONE KNOW WHERE I CAN GET PLUGS UP IN MIAMI???

 

SS,

You should be able to hunt down NGK's at any Car Quest or NAPA or, if that doesn't work, try any import auto parts store.

Dan

 

NGK TR6 @ Discount Auto Parts, $1.58 each (PN #4177)

 

JUST FIGURED OUT MY PROBLEM........IM GETTING NO FUEL!!!!!!!!!!........well i go tthe truck used and the fuel filter has never been changed it has 36k miles on it now its a 99.........it isnt knocking its like a rattling sound.........NO FUEL!!!!!!!!......talked to acouple guys and they said that should solve my problems.....its true these things do go through alot of gas and need new filters very often........hopefuly it works....plus anyways i just ordered the br7ef they should be in by later today or if not tomorrow.........Ill keep you guys posted on that

 

I changed my filter the other day at 23000 and it had a noticable amout of crap in it. I put the hypertech 160 degree thermostst in yesterday and it feels better Off idle. Remember the 99's had a problem with a crimp fitting on the in tank pump. It would blow off..sometimes all the way..sometimes partialy. Mine did. The truck would idle along just fine..guess vacuum drew enough for that. I suspect backpressure from plugging filters may have accelerated this problem.