Just notice that when I get on the car..and the RPMS go above 4500-5k Rpm that an erratic popping comes out of my exhaust during exceleration. It only does it when high in the RPM's, seems to be only on a lengthy run too.

Anyone ever had this symptom ?

 

Since it's on acceleration, I'd start with a logging session with ATAP to see if you're running rich. Excess fuel could ignite when it hits the cats.

 

sounds like you should get someone to look at your car..hmmmmmm tuning perhaps???? Cmon we got yellowvette to do hers.....you are next...well you and Arnold but he has some other *ahem* expenses

 

you sure you dont have a cat that has broken down and rattling about inside the canister or is it a definate popping your hearing
never heard of popping on acceleration

 

Actually...Im catless, forgot to mention it in the 1st post. Just long tubes to Xpipe to Indy's.

"D"

 

Check your plug wires. Make sure they double click onto the coil packs.
I would also check the spark plug tips. I had one come off with the plug wire and about 5 more were loose. Mine popped at idle. Went away after all was tightened.

 

It sounds like you have a classic case of a bad plug or sparkplug wire. I had my headers installed and had the same problem. When you get the pop does the engine misfire. Check your dash and look for the check engine lite to flash. It it comec on and stays on and you pull up your codes you will see a (10 PCM 0300) code indicating engine misfire.

Here is what I found when I had to trouble shoot mine:

LOOKS NORMAL, RIGHT

[IMG][/IMG]

CLOSER EXAMINATION REVIELS:
[IMG][/IMG]
[IMG][/IMG]

On the other side I found this:
[IMG][/IMG]
[IMG][/IMG]

Your OEM wires should read between 250-750 ohms and the jackets and boots should be plyable and in tact.

Let us know what you find,

Bill Curlee

 

hey bill curlee thats some nice hands you have

 

I have MSD on there right now..but they have been pulled off quite a bit..so I guess I will go through and check them all, and see if I can find my old Taylors !

Keep ya posted !

 

The MSD's may have a slightly different resistance reading as compaired to the OEM wires. I would read them all and compare readings. If you get one or two in the megohms, you may have found your problem. Dont forget about bad sparkplugs.

BC

 

I take it this could be my gremlin ? ?

 

COULD BE! I went thru removing the wires three times befor I decided to check each plug! Found two bad wires and the plug to boot!

Keep an eye on that CHECK ENGINE light if you get any more misfires to see if it comes on.

BC

 

Well, put new plugs in before I check the wires....still did it..put my old Taylor wires back on and took it for a test drive....ran GREAT.

We'll have to see if it remains this way ! ! !

"D"

 

Told ya ****!