Engine Idle Surge

[Green92LX]

I posted the same question not too long ago. The solution for me was one of the following (not sure which because I did all three at once)

Set TPS to correct voltage.

Check for vacuum leaks (I had one on the passenger side behind the strut tower)

Disconnect and clean the 10-pin connector on the back of the motor

One of the three worked for me for the exact same problem...good luck

------------------
1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler

Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.