Auto Repair Q&A

Popular

Engine

Cooling System

Brakes

Suspension

Transmission

Exhaust/Emissions

Electrical

Body

Interior

Understand

Directory

Auto Repair Products

I have a 2000 pontiac sunfire, with a 2.2L engine. How do i check the timing and if its out how do I set it?


The PCM uses information from

The PCM uses information from the MAP and coolant sensors in addition to RPM to calculate spark advance as follows:

Low MAP output voltage = More spark advance.
Cold engine = More spark advance.
High MAP output voltage = Less spark advance. Hot engine = Less spark advance.

no adjustments, if timming concern, check sensors listed above.

place engine on tdc on

place engine on tdc on compression stroke - check timing marks on the camshaft and crankshaft sprockets for alignment. really need a manual to follow - try alldatadiy.com if you don't have one.

is the check engine light on

is the check engine light on by chance most autoparts stores will scan codes for free you may be haveing a missfire have you tuned it up recently?


Auto Repair Q&A Contest

Win Cash!

Participate in the 10w40.com Q&A community to win cash prizes!

win cash prizes

Congratulations to our September Winners!

How To Play

 

Top Contributors: 3 weeks

Questionare