notchback11s

i just got a 1988 notch back! this is what the guy that sold it to me said!
midly built 302 erson cam 512 lift, ported e7 heads, dual valve springs. electric fan. tubular k member with tubular a arms, coilovers on the front with 90/10 drag struts. the rear end is fully built and has the axel tubes welded. 31 spline axels 4:10 gear with a eaton posi. extended wheel studs also. drag springs in the rear with 50/50 drag shocks. also has bbk upper and lower control arms. trans is a fully built t-5(5 speed stick)with a brand new clutch installed on saturday, pro ripper short throw shifter, has an aluminum drive shaft. 8pt cromoly cage, mini starter, aluminum radiator. newer mickey thompson drag radials out back, skinny tires up front. interior is mostly stock except for the 8pt cage, the racing harnesses and the monster tach. has a 2 5/8 oil and fuel pressure gauge on the cowl. mallory ignition box and optima in the trunk! now my quistions are! there is a noise kinda sound like a knock but at the same time you can tell its not could it be the dual valve springs or the cam? and when the car is cold it has idle surges until warm and runs really rich does any one know where i should start to figure out all my problems?

88GTBLACK

check headers for exhaust leak idk what kind of headers are on their make sure they got gaskets...check simple stuff first.

redemption

pull codes =]

1ATony

The surge issue could be the TPS,EGR Valve or IAC

19905.0stang

pull the codes of maybe try having it tuned if it hasent been already

notchback11s

i finaly got to pulling the check engine codes and i come up with
23, 31, 67, 81, 85, now my quiestion is where should i start and could any of these codes cause my idle surge problem?

mjr46

for 31, 81 and 85 have you deleted smog and egr and canister purge?? for 23 you need to check tps and for code 67 was koeo/koer test run with tranny in gear?? if so rerun test with tranny in nuetral, code 67 and 23 if they are true failures will contribute to idle roll/surge