mikelesnick

Car is 94 Civic with JDM H22a. FITV has been blocked off for a long time. Was running great the last two weeks, all the sudden is idling at 2000rpms. No CEL, I've replaced the TPS, cleaned the throttle body and IACV with carb cleaner, checked throttle cable tension/position and checked for vacuum leaks. Still is idling at 2000rpms. Bleeding the coolant is my next step, but damn... I don't know what else it could be, kinda stumped, could really use some help or suggestions from here. No idle bounce, car seems to run fine, idle is just stuck at between 2000rpms.

Thank you in advance for any help.

mikelesnick

Bump. I still really need any help.

NVturbo

what ECU are you using? Any CELs??

AllMtrRex

Recheck the throttle body gasket for any cracks or broken pieces. Double check all vacuum lines and block off anything not being used with a cap.

levi bowler

Sounds like a possible vacuum leak. Spray starting fluid around intake mani and tb while runing. If revs change there is a vacuum leak somewere.

mikelesnick

I believe the ECU is a chipped p28. No check engine light illuminates but when I jump the plug to get a code, it gives me 14 and 7. But nothing when I don't jump the plug. Car seems to drive fine, just idles at 2000rpm.

I did spray carb cleaner all around the throttle body and IACV. When I spray the carb cleaner around those two areas the idle does drop down from 2000 for a few seconds then jumps right back up.

NVturbo

Code 14 --- IAC Valve (Idle Air Control) defective circuit or unplugged / defective sensor

Code 7 --- TPS (Throttle Position Sensor) defective circuit or unplugged / defective sensor

I'm betting you got these two swapped around.

mikelesnick

Well out of nowhere, now it's running terrible. The idle has dropped back down to around normal but now it fluctuates up and down and more or less feels/sounds like it's running on 3 cylinders. It seems like it's running real rich too. I'm about at a end with this car.

mikelesnick

I made a video of what the car is doing now;

Here's a complete run down of everything done to the car;
Motor
JDM H22 w/ LSD Transmission
Clutch Master Stage 3 Clutch and Flywheel
Innovative Motor Mounts
Innovative Alternator Relocator Bracket
OEM JDM H22 Type S Red Valve Cover
Billet Aluminum Spark Plug Cover
Chipped P28 ECU
B&M Fuel Pressure Regulator
B&M Fuel Pressure Gauge
Removed Power Steering
Unorthodox Racing Alternator and Crank Pulley
Optima Yellow Top Battery OPD51R
Battery relocated in trunk
Password JDM Reservoir Covers
OEM JDM ITR Oil Cap
Hondata Heat Shield Gasket
Spoon Magnetic Drain Plug
Yonaka Radiator
Mugen Thermostat
Mugen Fan Switch
MSD SCI Ignition Control, Blaster SS Coil, Black Super Conductive Wires, Modified Extreme Honda Cap, Rotor
Apexi World Sport Exhaust
AEM Cold Air Intake
AEM Dry Filter
AEM Fuel Rail
Forbidden Motorsports True Short Throw Shifter

Exterior
Nissan G35 Silverstone Paint
JDM Thin Mouldings
Shaved Antenna (replaced with interior antenna)
Shaved Trunk Key
JDM Style Fenders with Side Markers
Mugen WWRS Style Front Lip
Black Spoon Style Mirrors
DOHC VTEC stickers
JDM OEM Fog Lights
JDM Amber Corners
Seibon Carbon Fibre Hood
Window Tint
Black Muteki Open Ended Lug Nuts
Benen Tow Hooks

Interior
JDM Center Console
JDM ITR Shift Boot
JDM ITR Shift ****
Alarm System with Power Windows, Power Locks and Power Trunk
Alpine DVA-9861 Deck

Suspension
Tein Super Street Dampers with Pillowball Upper Mounts
205/45R-16 Bridgestone Potenza RE-01R
Motegi Traklite 1.0 Wheels
Eibach Anti-Roll Kit
Energy Suspension Black Bushing Kit
Skunk2 Lower Control Arms
Skunk2 Front Camber Kit
Aspec Subframe Reinforcement Brace
ITR 5 Bolt Brake Conversion
AEM High Performance Brake Pads
Mugen High Performance Front and Rear Brake Rotors
Mugen Micro-Mesh Brake Line Set
Brake Calipers Powder Coated Black

NVturbo

OP, go to your other duplicate thread. My suggestion reply is on there