My car started misfiring yesterday, so today I took it to Autozone to get them to scan it and it popped up 2 codes.

P300
P1153

One is a multiple misfire code and the other is that one bank has shifted lean.

I would like to know what could cause this. I changed my plugs about 2 months ago, but this just started yesterday. Any help would be appreciated.

 

Welcome to the board.

Can you provide a little more info for us..... what what year? what model? etc. This will aid in us helping you.

Also If needed we can then move the question to the appropriate "tech" forum. Thanks.

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Ken Mook - 97' SS #2544
Advanced Tech Posting Guidelines

• Almost Alive: ?rwhp & ?rwtq Naturally Asperated on the Stock Bottom End.
• Stage 3 Pro Performance Heads, Solid Roller 242/248 Cam, Jesel Shaft Mount Rockers,
• Jet Hot Hooker LTs, True Dual 3" Exhaust with x-pipe, and the list goes on and on...

[This message has been edited by kmook (edited June 25, 2002).]

 

its a 2001 camaro SS, with SLP LT headers, no cats, LM catback, O2 sims, SLP airbox lid, k&n filter, bosch +4 plugs, stock plug wires

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2001 Navy Blue Camaro SS
White Leather Interior, White Face Gauges, Tinted Windows
SLP Lid, K&N Air Filter, Ported MAF Ends, SLP LT Headers, Race Pipe, SLP Loudmouth, Nitto 555R's

 

This question is more suited for LS1 Tech. I'll move it there.

Also please take a look at the link in my sig for what types of questions should be posted in Adv Tech. Thanks!

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Ken Mook - 97' SS #2544
Advanced Tech Posting Guidelines

• Almost Alive: ?rwhp & ?rwtq Naturally Asperated on the Stock Bottom End.
• Stage 3 Pro Performance Heads, Solid Roller 242/248 Cam, Jesel Shaft Mount Rockers,
• Jet Hot Hooker LTs, True Dual 3" Exhaust with x-pipe, and the list goes on and on...

[This message has been edited by kmook (edited June 25, 2002).]