87 hatch

My car is an 87 gt and when i bought it it wouldnt hold idle. I replaced the wires, cap and rotor, plugs, idle position sensor, idle control valve and the egr valve. Now it holds idle and runs good but the idle goes up and down, up and down. and if i onpen the throttle just a little, it will kind of run funny. I think i might still have vacuum leaks. has anyone had the same problem

primetime5.0

check to see if the tps is working properly

87 hatch

its brand new. How do you check if it is working properly?

86HOGT

You probably have a vacuum leak somewhere, most likely your plenum gasket.

bobby

put a voltmeter on it, .98-.99 volts