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post #1 of 13 (permalink) Old 10-05-2006, 09:10 PM Thread Starter
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Pinging

Hi guys! I can't do a search on this right now,because I'm short on time. But anyways, I have a 95 t-Bird,with Lonnie's XCAL2 on it with the 93 octane tune in it.My question is,ever since i've been down here in Florida,my engine pings badly under hard acceleration.It never used to do it in New York,So I just wondered if it has something to do with the heat and humidity down here. Oh BTW, I got a best of 28-30 mpg on the way down here,while my dad only got 20-25 mpg in his 90 Mercury Grand Marquis.I think we did all right for having around 160000 miles apiece on our cars!Thanks for help in advance!
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post #2 of 13 (permalink) Old 10-06-2006, 01:03 PM
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Heat, humidity, fuel quality. I got an xcal tune from Lonnie, and my car pinged horribly even on the 87 tune with 87 fuel. Retarded the timing 2 degrees, and no more pinging and great acceleration. He said it is probably the crappy fuel we get here in cali. maybe you got a bad tank of gas

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post #3 of 13 (permalink) Old 10-06-2006, 08:56 PM Thread Starter
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Yeah,I sort of guessed that that was probably it.Thanks for the quick reply!
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post #4 of 13 (permalink) Old 10-07-2006, 12:28 AM
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Quote:
Originally Posted by Pony Boy
Hi guys! I can't do a search on this right now,because I'm short on time. But anyways, I have a 95 t-Bird,with Lonnie's XCAL2 on it with the 93 octane tune in it.My question is,ever since i've been down here in Florida,my engine pings badly under hard acceleration.It never used to do it in New York,So I just wondered if it has something to do with the heat and humidity down here. Oh BTW, I got a best of 28-30 mpg on the way down here,while my dad only got 20-25 mpg in his 90 Mercury Grand Marquis.I think we did all right for having around 160000 miles apiece on our cars!Thanks for help in advance!
I live in las Vegas, and my 94 pings bad in the summer under acceleration. Mine is stock. higher octane gas helps a bit. In the winter its almost unnoticable.ID say it was the heat

1995 Cougar XR7 4.6
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1977 Country Squire 460
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post #5 of 13 (permalink) Old 10-07-2006, 12:31 AM
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running a cooler plug?

i run the autolite 103 and dont have pining problems.....i live in south florida.




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post #6 of 13 (permalink) Old 10-07-2006, 03:50 PM
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Id also try a MAF. These are notorious for going out. Thats what problem i had for a while and took a while to find it. It was reading 0.1 volts low which was enough to create a nasty ping.
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post #7 of 13 (permalink) Old 10-07-2006, 08:42 PM Thread Starter
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Yeah, I'm running the autolite 103's also. I wondered about the MAF,too. I just the need the tools to check it down here! Most of my tools are in New York! BTW,does anyone on the forums live in the Pensacola area? Does anyone know of any good roads around the area? Any tight and twisty roads?
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post #8 of 13 (permalink) Old 10-08-2006, 06:37 AM
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Can you swap MAF Sensors with your dad? They are both 4.6's, right? Yeah, yeah, I'm not to 'hip' on Ford knowledge, but I'm learning. Getting better gas mileage doesn't mean you car runs better, though.

When I bought mine, it needed plugs/wires/MAF/PCV hose in the back was busted.

Before I fixed it, I got decent gas mileage, but ran very sluggish. Also, the valves would chatter, but I Think that was from the bad MAF.

After I fixed all those problems, it ran like a raped ape (a big, fat ape, but you know), but the gas mileage went down.
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post #9 of 13 (permalink) Old 10-08-2006, 08:24 AM
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Quote:
Originally Posted by MN1293-232
Id also try a MAF. These are notorious for going out. Thats what problem i had for a while and took a while to find it. It was reading 0.1 volts low which was enough to create a nasty ping.

can you tell me how to go about reading a mafs voltage?

I have a 98 f150 that is stock and pinging on 87 octane with 12c plugs, and the octane plug pulled.

JL was telling me about a problem with the fuel pumps in these things from the factory, upgrading his to a high flow unit solved his ping.

I don't have the time to change a full pump in this thing now, but i do have the time to look at maf voltage.
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post #10 of 13 (permalink) Old 10-09-2006, 02:13 PM
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can you tell me how to go about reading a mafs voltage?
From the Tech article:

How do you know if you MAF is working correctly?

The voltage at terminals A and B with engine on should be 10.5V
The voltage between C and D should be .34 - 1.96 V at idle.
If not you may have an electrical prob in the sensor head.

Rob

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post #11 of 13 (permalink) Old 10-09-2006, 03:10 PM
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Quote:
Originally Posted by girdnerg
From the Tech article:

How do you know if you MAF is working correctly?

The voltage at terminals A and B with engine on should be 10.5V
The voltage between C and D should be .34 - 1.96 V at idle.
If not you may have an electrical prob in the sensor head.

Rob
Awesome, i'll check that out.

I think mine might have to do with fuel quality as well. We just got the winter blend gas here in NY, the truck doesn't like it.

I put a can of chemtool in the tank, now its fine for now.
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post #12 of 13 (permalink) Old 10-19-2006, 08:11 AM
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Retarded the timing 2 degrees, and no more pinging ??


i have a 96 4.6 t-bird.

how do you retard timing?..


trent
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post #13 of 13 (permalink) Old 10-19-2006, 08:09 PM Thread Starter
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To retard the timing,you must have an EEC tuner,such as the XCAL 2( Get it from Lonnie!) There is no "manual" way to retard the timing on the 4.6 T-Birds,since or T-Birds are distributorless. If you wanted to retard your timing a couple of degrees,you could pull the octane plug on your wiring harness under the hood. Do a search on the boards,and you will find pictures of where it is located.I can't think of a good way to describe where it is without pics.
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