I was just wondering if anyone could help me .My GrandAm started jerking the other day when i was driving.When i first start it up it seemed fine for a while now its really bad.When I start i n 1st gear ok 2nd gets worse and if i make to fifth gear it feels like someones pulling me backwards due to lack of power.Now its using tons of gas. Help Please
need more info size of engine,milage, last tune up,any service engine
i only know its a 94 and standard from your post
The car is a quad 4 it 130,000 miles or so has not been tuned up lately.
no engine light and have checked codes
you may have high resistance in the plugs/wires making the ignition system
work harder and break down under load the spark will find an easier path to
ground instead of jumping the plug gap and if the plug wire's are still
numbered 1 for cyl no1 and so on to no 4 those are original wire's and are
over due to be changed and for plugs normal plugs are recommended on most
cars to be changed every 30000 mile's or 24 to 30 months and recheck the
gap on new plugs before installing unless you use platinum then dont gap
normal tuneups should be at least wire's,plugs,airfilter,fuel and pcv if equipt
at first i thought it might be something electronic but now im not sure because the exhaust sounds muffled ?
this little bit of info is late but now it could be a converter plugging up caused by excess fuel in exhaust and closing(melting)the honeycomb design of the converter check the by having a back pressure test done on the converter
maybe a plugged catalytic converter (or cadillac converter where i work)?
do a complete tune up first.those are hideous engines