Can I relocate knock sensors without taking intake off?

2010 gmc terrain
https://www.parts.com/index.cfm?fuseaction=store.PartInfo&PartNumber=12621820&VehicleID=208990&diagram=FJ10135&Title%3D-2.4-LITER-KNOCK-SENSOR

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Removal & Installation

2.2L Engine

1. Before servicing the vehicle, refer to the Precautions section.
2. Drain the cooling system.
3. Relieve the fuel system pressure.
4. Remove or disconnect the following: Negative battery cableIntake Air Temperature (IAT) sensor connectorPositive Crankcase Ventilation (PCV) valve and hoseAir intake assemblyUpper radiator hoseAccessory drive beltExhaust front pipeAlternator and bracketsCrankshaft Position (CKP) sensor connectorKnock sensor connectorHeater hosesWater bypass hoseFuel linesEvaporative Emissions (EVAP) valve connectorCanister hoseIntake manifoldEngine wiring harness connectors at left rear of the engine compartmentPower steering pump pressure switch connectorFront coverSpark plugs and wiresCamshaft Position (CMP) sensorValve coverTiming belt. Refer to the Timing Belt unit repair section.Timing belt idler pulleysTiming belt rear coverOil pressure switch connectorCamshaftsCylinder head. Remove the bolts in reverse of the tightening sequence.
   
   Negative battery cable Intake Air Temperature (IAT) sensor connector Positive Crankcase Ventilation (PCV) valve and hose Air intake assembly Upper radiator hose Accessory drive belt Exhaust front pipe Alternator and brackets Crankshaft Position (CKP) sensor connector Knock sensor connector Heater hoses Water bypass hose Fuel lines Evaporative Emissions (EVAP) valve connector Canister hose Intake manifold Engine wiring harness connectors at left rear of the engine compartment Power steering pump pressure switch connector Front cover Spark plugs and wires Camshaft Position (CMP) sensor Valve cover Timing belt. Refer to the Timing Belt unit repair section. Timing belt idler pulleys Timing belt rear cover Oil pressure switch connector Camshafts Cylinder head. Remove the bolts in reverse of the tightening sequence.
   

To install:

Fig. Cylinder head torque sequence-2.2L (VIN D) engine

NOTE Use new cylinder head bolts for assembly.

1. Install the cylinder head with a new gasket. Tighten the bolts in sequence as follows: Step 1: 18 ft. lbs. (25 Nm)Step 2: Plus 90 degreesStep 3: Plus 90 degreesStep 4: Plus 90 degrees
   1. Step 1: 18 ft. lbs. (25 Nm)
   2. Step 2: Plus 90 degrees
   3. Step 3: Plus 90 degrees
   4. Step 4: Plus 90 degrees
   
   
2. Install or connect the following: CamshaftsOil pressure switch connectorTiming belt rear coverTiming belt idler pulleys. Tighten the bolts to 18 ft. lbs. (25 Nm).Timing beltValve coverCMP sensorSpark plugs and wiresFront coverPower steering pump pressure switch connectorEngine wiring harness connectors at left rear of the engine compartmentIntake manifoldCanister hoseEVAP valve connectorFuel linesWater bypass hoseHeater hosesKnock sensor connectorCKP sensor connectorAlternator and bracketsExhaust front pipeAccessory drive beltUpper radiator hoseAir intake assemblyPCV valve and hoseIAT sensor connectorNegative battery cable
   
   Camshafts Oil pressure switch connector Timing belt rear cover Timing belt idler pulleys. Tighten the bolts to 18 ft. lbs. (25 Nm). Timing belt Valve cover CMP sensor Spark plugs and wires Front cover Power steering pump pressure switch connector Engine wiring harness connectors at left rear of the engine compartment Intake manifold Canister hose EVAP valve connector Fuel lines Water bypass hose Heater hoses Knock sensor connector CKP sensor connector Alternator and brackets Exhaust front pipe Accessory drive belt Upper radiator hose Air intake assembly PCV valve and hose IAT sensor connector Negative battery cable
   
3. Fill the cooling system.
4. Start the engine and check for leaks.

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the cooling system.
3. Relieve the fuel system pressure.
4. Remove or disconnect the following:
   
   Negative battery cable Intake Air Temperature (IAT) sensor connector Positive Crankcase Ventilation (PCV) valve and hose Air intake assembly Upper radiator hose Accessory drive belt Exhaust front pipe Alternator and brackets Crankshaft Position (CKP) sensor connector Knock sensor connector Heater hoses Water bypass hose Fuel lines Evaporative Emissions (EVAP) valve connector Canister hose Intake manifold Engine wiring harness connectors at left rear of the engine compartment Power steering pump pressure switch connector Front cover Spark plugs and wires Camshaft Position (CMP) sensor Valve cover Timing belt. Refer to the Timing Belt procedure. Timing belt idler pulleys Timing belt rear cover Oil pressure switch connector Camshafts Cylinder head. Remove the bolts in reverse of the tightening sequence.
   

To install:

Fig. Cylinder head torque sequence-2.2L (VIN D) engine


NOTE Use new cylinder head bolts for assembly.

1. Install the cylinder head with a new gasket. Tighten the bolts in sequence as follows:
   1. Step 1: 18 ft. lbs. (25 Nm)
   2. Step 2: Plus 90 degrees
   3. Step 3: Plus 90 degrees
   4. Step 4: Plus 90 degrees
   
   
2. Install or connect the following:
   
   Camshafts Oil pressure switch connector Timing belt rear cover Timing belt idler pulleys. Tighten the bolts to 18 ft. lbs. (25 Nm). Timing belt Valve cover CMP sensor Spark plugs and wires Front cover Power steering pump pressure switch connector Engine wiring harness connectors at left rear of the engine compartment Intake manifold Canister hose EVAP valve connector Fuel lines Water bypass hose Heater hoses Knock sensor connector CKP sensor connector Alternator and brackets Exhaust front pipe Accessory drive belt Upper radiator hose Air intake assembly PCV valve and hose IAT sensor connector Negative battery cable
   
3. Fill the cooling system.
4. Start the engine and check for leaks.

usually the sensors (2) are good but the harness goes bad and there is corrosion at the knock sensor connection. The intake manifold need to be removed and the harness replaced. KNOCK SENSOR 2 IS THE REAR.

Hi,

code P0325 is for knock sensor and it looks like is a common problem with these engines.You might need to replace the knock sensor, and this is a few hours job for a qualified mechanic.You can try first using a high grade gasoline, but I doubt it will fix the problem.
code P0420 -right bank -B1 three way catalyst function.
possible cause for P0420:
-you might have a hole in the exhaust tube
- you might have some intake air leaks
- injectors leaks
-spark plugs
check first for some damage exhaust tube.or it might be related to code p0325, as a change in timing dictated by knock sensor malfunction.
hope this will help.
Good luck.

first the quest, this is common for nissan, replace the knock sensor, this sensor is located under the intake manifold rear of engine, some models you can sneak sensor out without removing the intake, this will take care of that car. now the camry, im guessing this is a 4 cylinder engine, replace the air fuel sensor (oxygen sensor) thats on the exhaust manifold. this will solve that problem. hope this helped.

It's located deep in the valley! Under the "LOWER intake manifold". copy and paste this link in your browser, or try clicking on it. It may be helpful to you.

http://x.nissanhelp.com/forums/pathfinder/7890-3-3l-knock-sensor-relocation.html

I didn't find this link until after I had already disassembled my truck. This is the hardest job that I've taken on thus far, hope I can put it all back together properly. I changed the gaskets on the valve covers since I had everything off.
To answer your question: It's under your lower intake manifold, so it's a hard job!

Knock Sensors are located below the intake manifold or intake plenum and mounted to the block. They are circular and have a bolt at the center. On V6s,8s etc. and flat styled motors, they will have two knock sensors (bank 1 and 2). Bank 1 or 2 relate to V6s/8s/10s etc., or flat styled motors which have two separate heads and exhaust manifolds. Each manifold is a bank, so if there are two manifolds there are two banks. Hopefully this helps

The price on the knock sensor is high due to the labor involved. You have to remove the top of the engine. ALL OF IT.

The Crankshaft Position Sensor is located: Under hood, driver side, front engine area, mounted rear of crankshaft pulley
The Knock Sensor is located: Under hood, center, front engine area, below intake manifold, mounted on block

Knock sensor replacement requires the removal of the intake manifold as the knock sensors are under it.