THEGREATKARLOZO

hey guys my car idols at 1500 until i drive it about 10 mins then it jumps up to 3500 and stays there. all the vacuum lines have been replaced. ive recently put a new trans and axle in dont know if that makes a difference?

THEGREATKARLOZO

[quote=THEGREATKARLOZO;5142101]hey guys my car idols at 1500 until i drive it about 10 mins then it jumps up to 3500 and stays there. all the vacuum lines have been replaced. ive recently put a new trans and axle in dont know if that makes a difference?TBI

sailtexas186548

iTrader: (2)

are you sure the RPM gauge isn't jsut reading high? I can't imagine that car being drive-able at all if what you say is true

THEGREATKARLOZO

yeah my engine is screamin and it idles along at 60 mph

sailtexas186548

iTrader: (2)

for anyone to help you we need to know engine/transmission, EFI or carb, and as much detail about your car's setup as possible

jfelte

He has a 91 rs 350 throttle body injection 700r4 trans

nickfrmtx89

my 92 camaro rs sometimes does the exact same thing. i had my head gaskets replaced along with alot of cooling parts about 7 months back, when i got the car back it has not overheated once but a new problem occured. it idles weird and acts up after i take it on long trips. RPM's jump up-down,stalls, sometimes it runs perfect and sometimes i can hardly get it home. i'v put a new MAP sensor, TPS, replaced plug for IAC(broken) and replaced 1 injector(broken), replaced the IAC and fuel filter. i suppose i'v replaced everything to do with fuel delivery except the EGR valve and fuel pump.

sailtexas186548

iTrader: (2)

so a 305 TBI car swapped to a 350... Hmmm can you still contact who ever did the swp? that would be a good place to start. Did it jsut randomly start idling high?

THEGREATKARLOZO

the shop that did the swap is long gone but i started spraying carb cleaner and i think it might be my intake manifold gasket that the only place i sprayed anything changed could that cuase such a severe problem

THEGREATKARLOZO

and yes it happened out of know were