I changed timing chain on my 1990 pontiac grand am and it is spitting and sputtering and back firing. What could be problem??

2002 PONTIAC GRAND AM REPAIR MANUAL

get your car fix right now

That could be the timing belt.. have you ever replaced it? (Some Cherokees use a timing chain.) If it is the belt, the more you crank it over, the more valves you can bend or break.

you must of not put the chain on right. to set it right you must have the number one pistion at the top of cylinder on compression stroke. then line up your timeing marks on the cam shaft then put on the chain.

Probably an intermittent problem with the crank sensor or wiring from it to the ECM.

if its back firing u have a timing problem

Sounds like a timing problem, check timing and if off could be timing chain worn out especially if there is excessive miles(200,000 miles or more)

could be bad plug wire's or spark plug's

depends on how many miles on the car,,but sounds like timing chain,,but be careful,,if u have a ( 0 ) tolerance motor something could of happen internally,,2.3L are known for timing chains,,unfortunately u wont know this, until the head is removed or chain is replaced

I have the same problem on my 95 grand cherokee laredo. Sometimes it starts out fine and after about 10 miles it starts spitting and sputtering. Then after a while it seems to clean out and run fine again for a little while. Then other times it starts out spitting and sputtering at the begining. I changed the fuel filter and that was not it. It is a 4.0L 6cyc. Any Ideas?

Thanks,
Broken Arrow, OK

Timing chain.