Coil pack?

[Don 231]

Hello, I just put new tires on my 87-t including nitto 275-60-15 drag radials and went to take the car for a ride and it started missing and poping through the intake. I almost didnt make it home. My fuel pressure stayed at 38-40 at idle and I tapped on the mass air with no change in idle. My scanmaster readings were taken at idle. CLE 167 , AF 04, BAT13.1-13.4, L830-34, INT116-134, BL126, RPM775-800, TPS.44-4.74, IAC21, CC00-248
The car ran fine until yesterday, now i am afraid to take out of the garage. Also last week I put about 5 gal of cam 2 110 oct in about a half a tank of 93 oct but the car ran fine until yesterday. The rest of my mods are below in my sig. Sorry so long and thanks!

 

[buickboy]

O2 sensor dying or dead. Get a check engine light yet. 110 will kill em quick.

 

[Garycar]

It doesn't sound like a bad 02. It sounds from your description that either the MAF is failing or one of the intercooler/turbo hoses is partially off. I'm sure there are many other possibilities.

 

[tminer]

There is a crude test (using ohm meter) for the coil pack so you might check that out. Not sure if info is at gnttype.org or you might have to search here.

Tom

 

[QuickWE4]

Coil pack but could be the module as well...would be the same symptom..

Rich

 

[don86T]

Don,
I have a good coilpack you can try if you want.

email if so

 

[Don 231]

Thanks guys, I just put a new denso o2 sensor about two weeks ago and the scanmaster is showing no codes at all. I also checked the up pipe looked ok,almost new heavy duty hoses and clamps. I have a spare coil pack and module and another maf i will try tommorow. Thanks . Don86-t I will give you a call.