I need some help ASAP. I changed my fuel filter and the pinging is still there. I checked my plugs and they look good. I also changed the oil, put some engine cleaner, and cleaned my breather cap and that still didn't solve the problem. I also put some octane booster to find out if it was a gas related problem here in California, that made the pinging worst!!
As a reminder, I have the stage 1 and 2, minus the throttle body. I have the NGK TR6's gapped at .40 and the 4# lower pulley. My truck is an 01 with the single J39 program.
Whether it is a coincidence or not, the pinging started after I installed the E-fan with the water pump. I also wanted to remind you that after I switched the position of the MAS sensor as JDM’s website recommended with the cold air kit, the SES came on. I disconnected the battery several times and tinkered with the position of the MAS several times until the SES didn't come on anymore. But the car still wasn't pinging until after the E-fan with the water pump was installed. The SES is not coming on with the pinging. The pinging did not start until 4000 miles later after my last mods, which were the tr6 plugs, 4 # lower pulley, and line mod valve. The chip was reprogrammed for all my mods, and the truck was running great. Should I send the chip back for reprogramming? Could the MAS have gone bad? But even when the SES was on, it wasn't pinging. Since the pinging started after the e-fan installation, does the chip need to be reprogrammed for the lack of load in the engine?
Please respond ASAP. I don't want any damage to occur since this is my daily driver. I keep hearing about people’s rods flying out and holes in their blocks. This is literally causing me to loose sleep. Please advise on what to do next. I think I should probably send the chip for a reburn to see if it will help.

Thank you
James

 

I don't have an answer for you except 100% of the time the Chip needs to be reburned. However I will say I have read many post of people getting the ping after the water pump and electric fan Mod. I'm sure a thousand people are gonna pop in now and say, mine was fine after those mod's, but as usual I'll fight them to the end because there are post about it.

 

Rob, I think it was the electric fan and water pump that started the pinging, but most people say that they wont. The truck was running fine for 4000 miles after my last mods which the chip was also reburnt for them.

 

Brasil,

Maybe it's not pinging. At one point I thought my truck was pinging - completely stock. I tried different brands of gas and octane boosters; but niether helped. When I was under the truck changing the fuel filter, I saw a bunch of soot where the exhaust had been leaking at a clamp point. I tightened down the clamp; and the "pinging" was gone. I'm not saying that this is your problem; but you may want to check it out.

-Edward

 

Ed thanks for the suggestion, but I just had my exhaust replaced with the silver bullet (which was welded) and it was pinging before and after the new exhaust. Could something have been installed improperly with the fan and water pump that would cause a pinging like sound? Rob can you guide me to the posts of those who have had pinging after the e-fan wth water pump install? Did you have to reprogram the computer to get rid of the pinging after your e-fan install?

Thanks for all your comments!

 

Rob,
I don't see any way that a water pump and e-fan can cause pinging or need a chip reburn. I just did the e-fan and cobra water pump today BTW!!
Not here to argue wit ya about it just my opinion.....
ps: thanks for the hard work on the sub...My RFI filter is supposedly on it's way from Canada...

 

well I guess Iam one of the ones that DIDN"T have any pinging start after the electric fan and water pump install.

It's kind of hard to say what the problem is by just reading your reply. For what its worth, *I think*, you fellas in Calif with your gas need to have a chip burned locally. D I had a Danny Swanson chip in my 99

 

I do not know if things have changed but on my 01 the programs I had with a 4# pulley were J49(street) and J69(aggressive street).I did not go to the J39 until I got the 6 #.I would call JDM for conformation.Things might have changed.

Hope this helps

 

have you changed the stat???

 

Vinnie, the J39 is one of the mildest programs JDM has tuned for the 91 octane gas here in California. The J49 which you have is for 92 octane I believe. JDM reburned the j39 program for me when he shipped my 4# lower pulley, line mod valve, and NGK tr6's. No pinging for 4000 miles!! Started immediatly after the E-fan went on.

SVT360, the thermo came with the e-fan kit. It is 170 degrees.

 

 

Check if your plugs are loose.

 

Try pulling your supercharger belt off and see if it does it, also, unplug your electric fan harness from the fan unit and see if it does it. Maybe the fan is out of balance and maybe that's what you hear. I've heard of this, but there is no way putting the electric fan and waterpump would cause detonation unless your thermostat was sticking. You did put coolant back in the system right? Excessive heat in the upper end of the motor can cause detonation, or pinging, especially with lower octane fuel.

What actually causes the ping noise is the fuel igniting before combustion is set to take place, usually caused by either excessive heat in the heads or using a fuel with an octane rating less then what the engine calls for. I don't think burning a chip to for use of 91 octane can solve the problem because these engines are designed to run on 93, especially with the added head from the supercharger. I think a phone call to Jim is in store for ya. He is very knolegeable and putting your heads together, you should be able to get to the bottom of it. You sure it isn't your injectors ticking, and not pinging, and you can hear them without that noisebox of a clutchfan, which you couldn't before???

 

I put some octane booster to see if the pinging would get better or go away due to some bad fuel, it made it worst!! What I hear is a ticking or knocking type of sound. The chip had already beenburnt for 91 octane. Actually these trucks have to be able to run on 91 octane gas becuase it is sold in all 50 states, with several only having 91 octane rating as their highest.

 

How do you know if the thermostat was sticking. I did put the new 170 degree unit that came with the kit. If you don't have an exact 50/50 mixture of coolant and distilled water can that cuas eexcessive heat and ping? Also if the fan was out of balance you would hear this noise all the time, right?