car pings...any ideas?

showoff · Oct 6, 2009

my car (95 GT auto.)pings alot when it warms up. the temp stays between the "R" and the "M". i have set the timing at 0,10 and 12 degrees,no change. i replaced the pump to a 255lph, new fuel filter, adj.fuel press.reg., gauge, 180 degree thermastat, cap&rotor, plugs, MSD coil. still pings. just passed emissions perfectly. i am running out of ideas,any help would be appreciated.

Matt94GT · Oct 6, 2009

thats odd that the timing did nothing. Did you remove the spout connector when checking your timing?

Paul · Oct 6, 2009

Is that you Josh?

The pinging problem is a real issue with the 94-95 cars. One of my old convertibles didn't stop pinging until I set the timing at 6* initial, put in colder plugs, put the fuel pressure at 42 psi, and ran good gas all the time. Even then, it would still occasionally ping.

Also, if your EGR isn't working, that can cause problems too.

showoff · Oct 6, 2009

spout out. fuel press.is 42 and i have cold plugs in it from the turbo car,havnt used 91 octane yet.yes pauly,its me

Paul · Oct 6, 2009

Haha. Glad to have you here man. :grin:

First things first - you MUST use 91 octane. The SN 5.0s aren't nearly as forgiving as your foxbody was.

Is the EGR working correctly? Got a CEL or any codes? Are you consuming any oil that you can tell? The black car had severe detonation problems, only to later find out (right before I got rid of it) that one of the intake gaskets was damaged, causing oil to get sucked into the intake tract. When I fixed that, it made a huge difference.

showoff · Oct 6, 2009

the old plugs looked fine and it dosnt seem to be throwing any codes. i'm going to hook up a scan tool soon and maybe the light is bad in the dash

CC'S95GT · Oct 6, 2009

did you verify TDC? the HB may have slipped and is giving you the wrong timing marks.

gts_guy408 · Oct 7, 2009

how does it run when your at normal operating temp?becuase i had somewhat the same prob ..and the cars guage said it was fine but it was actually running hot as hell so check the temp sensor...and yeah my timing was horrible too it was at 8 and it was pinging bad (with out the spout)

showoff · Oct 7, 2009

gts_guy408 said:
how does it run when your at normal operating temp?becuase i had somewhat the same prob ..and the cars guage said it was fine but it was actually running hot as hell so check the temp sensor...and yeah my timing was horrible too it was at 8 and it was pinging bad (with out the spout)

where is the temp sensor located? where does everyones temp gauge needle sit at normal operating temp?

2002BLGT · Oct 7, 2009

Replace the harmonic balancer and then reset your timing

Paul · Oct 7, 2009

showoff said:
where is the temp sensor located? where does everyones temp gauge needle sit at normal operating temp?

Temp sensor that runs the gauge is in the driver side of the lower intake, up front. Has a single wire going to it. Looks like this:

These cars tend to run hotter than the foxbody. My advice is to get a real water temp gauge in it ASAP.

Paul.

LAFENATU · Oct 7, 2009

My gauge sits on the right side of the N.

When the A/C is on it is more towards the R.

showoff · Oct 18, 2009

fixed it!!!! i got a nice TCI balancer installed. the timing was at 20,on the old balancer it said about 5. so the old balancer was crap. thanks for your help guys

modo · Oct 18, 2009

cool its fixed but just a fyi going forward... as paul stated oil in the intake will cause detonation. i have seen a lot of cheap pep boys style replacement pcv valves suck a ton of oil and it always puddles in runners 7/8. its always best to get the pcv from the dealer and also swap out the inner screen at the same time.

high rpm kills the stock dampeners. sfi is always the best way to go