i have a 2000 dodge ram sport 1500 with a remanufatured engince with less than 1k miles on it. it seems to have a slight hiccup while idling. ive replaced tps, as of last week had my exhaust system redone ( new upstream and downstream o2 sensors replaced, new cat, new muffler, piping), new IACV, replaced sparkplugs with 3923 autolites last week, also have hughes plenum plate installed.

hiccup doesnt seem to affect anything while driving (no backfiring, sputtering or stalling) just find it tiring that its their after dumping a new engine in.

I dont know if this has anything to do with it but i noticed that while trying to use seafoam through my throttle body that for some reason i cannot keep a steady rpm between idling and 2k rpm's. its seems to be all or nothing when in park.

also bottom end almost seems to have excessive noise....might be getting paranoid though.

Any Ideas???

 

Does it do it all the time? When warm? Cold? After running for a couple minutes??

 

Why are you running seafoam through a new motor???????? Who put the new motor in the truck was the fuel sync set to spec?

 

Hiccup seems to be noticible after it warms up. to damn cold where im at to sit in it till its warm. and yes it seems to do it all the time. the excessive engine noise happens when cold or warmed up. sounds worse when i first start it.

 

put seafoam through since my mechanic didnt install new injectors (-_-). said they didnt look bad. dont ask why they didnt no idea

 

Jasper has sent me bum engines right out of the crate...... Take it back to the installer, and have them take a look.

 

if it makes it.....mechanic is 6-7 hours away back home. engine seems to run fine just getting tired of throwing money at it. plus it took them 2 months to get my truck done

 

You said the exhaust was done, what brand 02 sensors did you have installed?

 

told them to use NGK sensors. only ones that have long enough wires to reach up to the plugin

 

Well, there's my idea.


Is it a bouncy idle or rough?