Question about 1999 Pontiac Sunfire

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1999 pontiac sunfire-timing chain jumped

If the timing chain jumps will this bend the valves???

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  • matt_mcconah Nov 19, 2008

    If the timing chain jumps will this bend the valves???

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Is the motor still running???? All depends where the piston an valve are when it jumps off?????

Posted on Feb 03, 2009

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1 Answer

Why does it jump time?


It sounds like you may need a timing chain tensioner.
I looked on e-bay and found a kit which includes an "upgraded" tensioner, and includes all the pieces, for only 60 dollars.
God bless your efforts.

Feb 11, 2016 | 2002 Pontiac Grand Am

1 Answer

I have a 2002 pontiac sunfire with the 2.2 ecotec


are you sure it jumped time?? look at all your other questions,maybe you will figure out it is worth more to a scrap yard

Oct 06, 2014 | 2002 Pontiac Sunfire

1 Answer

Timing is way off do timing belts jump a tooth and if so what are the marks


Both the 2.2 and the 2.4 engines use a chain, not a belt.
A chain could still be faulty, but I doubt it would jump teeth unless the tensioner failed to keep it tight.

Sep 15, 2012 | 2001 Pontiac Sunfire

1 Answer

2002 Pontiac Sunfire is out of time, how do I adjust the timing?


The timing is not adjustable. You must get the system scanned for codes to diagnose this problem.

Sep 05, 2012 | 2002 Pontiac Sunfire

1 Answer

My mom was driving down the road when the car stated to loose water. she pulled over and added water but the car would not start. she said the water was leaking out of the front. i think its the water...


Hello! I do not believe the engine "jumped time"...But merely overheated...Fill it back up with 50/50 and a little water...Start the engine and visually look to see where the leak is...Send a comment ...Guru...saailer

Dec 04, 2011 | 1999 Pontiac Sunfire

1 Answer

I have a 96 Pontiac sunfire GT with the 2.4 engine it has a super bad misfire I have replaced the map sensor, plugs, coil pack, fuel rails. what elsa could be causeing this promblem


i`m assuming this is a dohc motor.have you checked the ignition module and the connections at the module.its located on the cover where the electrical connector fastens to it.it could also be a jumped timing chain possibly by a bad chain tensioner or worn out chain.

May 22, 2011 | 1997 Pontiac Sunfire

1 Answer

My 17-year old son asserts that his '99 Sunbird (112K miles) broke down several days ago causing him to pull off the road - no additional details - after which he restarted the car and drove home. Next...


If the timing belt (chain ) broke or jumped the car would not have restarted after your son shut the engine off. (The motor would have stopped on it's own.) Timing belts are an issue with most modern cars and if the motor is what is referred to as an interference engine there will be valve damage. The other possibility is that some components from the butterfly valves in intake manifold were sucked into the cylinder head causing damage to the cylinders , pistons and valves. No matter what the cause its going to cost a lot to repair.

Jan 18, 2011 | 1999 Pontiac Sunfire

1 Answer

2003 Pontiac Sunfire died on me, how/why?


If you hear a loud clank when you try to start it, but nothing turns, that is the starter trying to turn the engine, but the engine is locked up. If the timing chain/belt jumped, the engine would still spin.

Feb 20, 2010 | 1996 Pontiac Sunfire

1 Answer

Having starting problems car will not start turns over but not fire seems like fuel or plugs started then just died couldn't get started agian any sugestions


I have a 03 pontiac sunfire that jump time. It also bent the intake valves on the head. I got the head repaired and got a new timing chain. According to the vehicle manuel repair book I am to align the intake balance shaft and the exhaust balance shaft with the crankshaft as well as the crankshaft to the cam intake and exhaust sprokets. This has all been done. I even did the tensioners on both cam and balance shafts according to the book. When I go to start it it jumps time. So I do it all again but this time I crank the crankshaft using a socket wrench and as it turns I see it starting to bind and then it gets loose on the right side where the intake valves are but I do not see where or what could be causing this. The chain just gets loose on one side ( Not tensioner side). I am confused please help.

Oct 17, 2009 | 2003 Pontiac Sunfire

2 Answers

Timing chain jumped


if it is a zero tolerance engine there is the possibilty valve damage has occured, depends if you were driving the car and at what speed it happened

Nov 19, 2008 | 1999 Pontiac Sunfire

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