5th Gen ('95-'99): Help

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Aug 13, 2020 | 04:57 PM

Courtney Garrett

Thread Starter

Joined: Aug 2020

Posts: 2

Help

My 1997 Monte Carlo LS 3.1L, gave a code of P0305. Went and got my injectors replaced along with my spark plugs and wires of course. Drove it around and noticed that when I accelerate or am stopped, it hesitates and the check engine light comes on. Went to get it tested and the same code pops up, P0305. I literally just got everything replaced, is there another reason this code pops back up and is this something that I can do myself? I'm really not looking to give more money for something I can do at home.

Last edited by Courtney Garrett; Aug 13, 2020 at 07:36 PM.

Aug 13, 2020 | 10:17 PM

Steelbizkit

Joined: Jul 2017

Posts: 154

From: Centralia, IL

Quote:

What are the Possible Causes of the P0305 Code?

A thorough diagnosis can pinpoint the exact cause of code P0305. Common causes of the code include:

Ignition system problems (e.g.a worn spark plug or failed coil pack)
Fuel system problems (e.g., failed fuel injector or damaged injector driver)
Engine mechanical problems (e.g., a leaking valve or damaged lifter)

Note: If there are other codes stored in addition to P0305, the causes and symptoms may differ from those listed here.

bad coil, bad injector, bad injector wiring, bad icm/wiring, low compression due to ring or valve damage.

Just gotta diagnose it. Start by checking for fire at plug, then check to see if injector is firing, then do compression test.