Idle sucks

[92_240sx_95]

Just replaced my whole fuel system (factory), temp switches, and maf. Car wants to die at idle. Don't know to much about 240's just bought it a week ago. Could my iacv be causing this? Thanks

[shiro_neko]

probably. what's your idle speed? did you try adjusting it? other things to check: fuel pressure regulator and spark plugs

[92_240sx_95]

changed my tps, regulator and spark plugs. tps is set to .53v. i think its supposed to be between .45 and .55. just found out my wires in my maf are loose tho. Rewiring it tomorrow and see how that does. thanks for responding. if that doesn't work i'll hit the forum up some more

[92_240sx_95]

alright. i rewired my maf and changed my o2 sensor and my plug wires thanks to not having a heat shield over my exhaust. cars running but hesitates and pops. i think the cat may be plugged. if anyone has any input it was be amazing thanks

[shiro_neko]

poor grounding can cause hesitation and its the easiest to check too. zerothread/159907

[92_240sx_95]

thanks. saw that thread the other day and tried it. It didn't pick up anything so i'm guessing thats 0 ohms. getting a backfire but instead of it sounding like it's coming out the back of the exhaust it sounds like its popping around my exhaust manifold. plus the manifold is getting crazy hot and melting stuff thats not even close to the manifold. any other ideas would be helpful. Seafoamed the car and cleaned the throttle body

[shiro_neko]

sounds like an exhaust leak. check your exhaust gasket.

for the hesitation, try removing vacuum hose from fuel pressure regulator and try to drive. improves, check fuel pressure.

remove exhaust gas sensor harness and try to drive. improves, replace sensor. also check your ignition wires and plugs. and dont forget to check your timing.

[92_240sx_95]

problem fixed. plugged cat. thanks for the help guys