93 rodeo PLZ HELP!

tbarb08

b4 i pull my hair out...can someone PLZ HELP.....
my bf and i have a 93 rodeo that we purchased from ( some guy)
almost a year ago and it has been a nightmare almost since day one.
almost immediately it was spitten/sputterin/no power..took it in to have it checked was told it had a dead cylinder and basicly needed to replace engine...sooo...got a 95 engine out of a passport and replaced it...drove it home ran great..shortly after started having same problem....took it to a couple places AGAIN to have it checked and told us they couldnt tell us what the problem was bcuz there wasnt a check engine light or codes.
sooo...bf started replacing parts..he has replaced......
fuel filter, fuel pump, o2censor, spark plugs, coil packs & timing belt.
( not in that order)
it had completely stopped running and thats when he replaced the fuel pump and it now runs again but with no power...it was suggested to us to take it to a isuzu dealership to have it checked out again...but b4 we do that as a last resort and spend a bunch more money we dont have we are hoping for some advice/ideas and any/all will be GREATLY appreciated.

tidester

I would give Engine Swaps a try since your problem seems related to the swap.

tidester, host
SUVs and Smart Shopper

tbarb08

had some of the same problems prior to the swap, except now we don't have a dead cylinder.

classicmustang

hey barb, my father has an rodeo with the 4 cylender, with the exact same problems as you. check the acceleration problems post, thats my post. i was wondering if u have the 6 or 4 in your bfs truck? my fathers has sputtering, shacking, low power in all gears, its a 5 speed. and also teh most annoying it changes its pitch of tone as to the acceleration, it gets deeper, when it looses power. do u have these same problems? please let me know.

Many Thanks

darth_venom

Check your ignition timing, and if applicable your camshaft timing. You can find out how to do this on Auto Zones website under 'view repair manuals'.

Hope this helps.

classicmustang

Thanks for, the suggestion. the timing is on and so is the cam shaft timing, im not sure what the problem is but it is a rebuilt head, and its been running funny since then but i believe its on....any results on your isuzu?