Still looking for PINGING source...

slo95 · 05-01-2001, 04:49 PM

I have to ask again, because this is getting ridiculous. I think the spark predetonation finally blew a head gasket (another post). I have crazy big time engine ping under load ONLY when the car is warmed up. On my way to work in the morning, I can stomp all I want, and no noise(ping) - until the engine warms up to say, the "ORM" part, of the stock gauge. Also only happens warm, at WOT, under load. Stock 95 GT, tried 6* to 10* timing, no diff., 185* thermostat, gas octane makes no diff., cleaned the EGR/IAC/new ECT/cleaned the connectors, all the usuall. NO Codes.

1. I was thinking air or fuel pressure related (leaning out), but wouldn't that cause problems all the time, no matter what temp? So I think that is out.

2. So now I think cooling system related? Not enough flow thru the block/heads to keep them cool enough not to cause excessive heat and pre detonation? Think a new radiator would do it ( I am flushing it tomorrow, need to measure internal coolant loss) ? water pump is not leaking or squeaking.
also does not over heat, but the upper radiator hose after the car is warm is hotter that sh!t and hard to squeeze.(pressurized)

Any ideas? (Nothing like trying to pass someone with the car making all sorts of noises - embarrasing to say the least.)

95Convert · 05-01-2001, 08:42 PM

I think I may have said it before, but the only fix is to get an EEC tuner and change the timing retard in the computer, or have someone burn a chip for you to correct the problem. I had this same issue for over a year with my '95, and nothing short of the above ever fixed the problem. I got the tuner and deprogrammed the retard built inbetween shifts and played with the timing/fuel settings a little, and voila! no more ping.

slo95 · 05-02-2001, 08:57 AM

Thanks, the only thing I cannot imagine is WHY I would need this EEC tuner on a completely STOCK car? why doesn't every 95 GT do it then? What product did you get, how much, all that jaz...
Oh yeah, and if the EEC needed to be tweeked, why does my car only act up when it is warmed up? Is it because it is in the closed loop or whatever?

05-01-2001, 04:49 PM	#1
slo95 Registered Member Join Date: Dec 2000 Posts: 168	Still looking for PINGING source... I have to ask again, because this is getting ridiculous. I think the spark predetonation finally blew a head gasket (another post). I have crazy big time engine ping under load ONLY when the car is warmed up. On my way to work in the morning, I can stomp all I want, and no noise(ping) - until the engine warms up to say, the "ORM" part, of the stock gauge. Also only happens warm, at WOT, under load. Stock 95 GT, tried 6* to 10* timing, no diff., 185* thermostat, gas octane makes no diff., cleaned the EGR/IAC/new ECT/cleaned the connectors, all the usuall. NO Codes. 1. I was thinking air or fuel pressure related (leaning out), but wouldn't that cause problems all the time, no matter what temp? So I think that is out. 2. So now I think cooling system related? Not enough flow thru the block/heads to keep them cool enough not to cause excessive heat and pre detonation? Think a new radiator would do it ( I am flushing it tomorrow, need to measure internal coolant loss) ? water pump is not leaking or squeaking. also does not over heat, but the upper radiator hose after the car is warm is hotter that sh!t and hard to squeeze.(pressurized) Any ideas? (Nothing like trying to pass someone with the car making all sorts of noises - embarrasing to say the least.)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
dyno source power chip	Wraith	Windsor Power	2	02-28-2003 07:39 PM
93 GT seat fabric source	squid	Windsor Power	5	10-20-2002 07:47 AM
power source	97 Stang	Blue Oval Lounge	21	07-07-2002 01:34 AM
power source	97 Stang	Audio, Security, & Electronics	1	07-04-2002 11:50 AM
Source for Kirban FPR?	withamc	Windsor Power	3	03-05-2001 05:28 PM

05-01-2001, 08:42 PM	#2
95Convert Registered Member Join Date: Oct 1999 Location: Murfreesboro, TN Posts: 123	I think I may have said it before, but the only fix is to get an EEC tuner and change the timing retard in the computer, or have someone burn a chip for you to correct the problem. I had this same issue for over a year with my '95, and nothing short of the above ever fixed the problem. I got the tuner and deprogrammed the retard built inbetween shifts and played with the timing/fuel settings a little, and voila! no more ping.

05-02-2001, 08:57 AM	#3
slo95 Registered Member Join Date: Dec 2000 Posts: 168	Thanks, the only thing I cannot imagine is WHY I would need this EEC tuner on a completely STOCK car? why doesn't every 95 GT do it then? What product did you get, how much, all that jaz... Oh yeah, and if the EEC needed to be tweeked, why does my car only act up when it is warmed up? Is it because it is in the closed loop or whatever?