Engine Controls/fuel - 3.6l (Lfx) - Specifications

Engine Controls/fuel - 3.6l (Lfx) - Specifications Cadillac ATS I

Temperature Versus Resistance - Engine Coolant Temperature Sensor

Temperature C°/F°	Resistance Minimum Ohms	Resistance Maximum Ohms
Engine Coolant Temperature (ECT)
40/-40	40,490	50,136
20/-4	14,096	16,827
10/14	8,642	10,152
0/32	5,466	6,326
20/68	2,351	2,649
25/77	1,941	2,173
40/104	1,118	1,231
60/140	573	618
80/176	313	332
100/212	182	191
120/248	109	116
140/284	068	074

Temperature Versus Resistance - Engine Coolant Temperature Sensor

Temperature C°/F°	Resistance Minimum Ohms	Resistance Maximum Ohms
Hitachi Intake Air Temperature (IAT) Sensor
40/-40	37,527	49,882
20/-4	13,110	16,329
10/14	8,145	9,851
0/32	5,205	6,122
20/68	2,298	2,570
25/77	1,900	2,100
40/104	1,073	1,226
60/140	537	639
80/176	289	356
100/212	165	210
120/248	99	129
140/284	62	83
150/302	49	67

Temperature Versus Resistance - Intake Air Temperature Sensor (Hitachi Sensor)

Altitude Measured in Meters (m)	Altitude Measured in Feet (ft)	Barometric Pressure Measured in Kilopascals (kPa)	Barometric Pressure Measured in Pounds Per Square Inch (PSI)
Determine your altitude by contacting a local weather station or by using another reference source.
4,267	14,000	56-64	8.1-9.3
3,962	13,000	58-66	8.4-9.6
3,658	12,000	61-69	8.8-10.0
3,353	11,000	64-72	9.3-10.4
3,048	10,000	66-74	9.6-10.7
2,743	9,000	69-77	10.0-11.2
2,438	8,000	71-79	10.3-11.5
2,134	7,000	74-82	10.7-11.9
1,829	6,000	77-85	11.2-12.3
1,524	5,000	80-88	11.6-12.8
1,219	4,000	83-91	12.0-13.2
914	3,000	87-95	12.6-13.8
610	2,000	90-98	13.1-14.2
305	1,000	94-102	13.6-14.8
0	0 Sea Level	96-104	13.9-15.1
305	1,000	101-105	14.6-15.2

Altitude Versus Barometric Pressure

Application	Specification
Firing Order	1-2-3-4-5-6
Spark Plug Torque	Refer to Fastener Tightening Specifications
Spark Plug Gap	Refer to Engine Mechanical Specifications (LFX)
Spark Plug Type	Refer to Electronic Parts Catalog

Ignition System Specifications

Application	Specification
Application	Metric	English
Accelerator Pedal Bolt	10 N.m	89 lb in
Air Cleaner Resonator and Outlet Duct Bolt	9 N.m	80 lb in
Camshaft Position (CMP) Actuator Solenoid Valve Bolt	9 N.m	80 lb in
Camshaft Position (CMP) Sensor Bolt	10 N.m	89 lb in
Crankshaft Position (CKP) Sensor Bolt	9 N.m	80 lb in
Coolant Temperature Sensor	20 N.m	35 lb ft
Engine Control Module Bracket Fasteners	7 N.m	62 lb in
Fuel Injection Fuel Rail Assembly Fasteners
First Pass	12 N.m	106 lb in
Second Pass	23 N.m	17 lb ft
Fuel Injection Fuel Rail Fuel Pressure Sensor	33 N.m	24 lb ft
Fuel Pressure Sensor - Feed Pipe	9 N.m	80 lb in
Fuel Pump Fasteners	15 N.m	11 lb ft
Fuel Pipe Shield Fasteners	10 N.m	89 lb in
Fuel Pump Flow Control Module Fastener	7 N.m	62 lb in
Fuel Pump Intermediate Pipe Fittings
First Pass	16 N.m	12 lb ft
Second Pass	32 N.m	24 lb ft
Fuel Tank Fill Pipe Bracket Bolt	9 N.m	80 lb in
Fuel Tank Strap Bolt	20 N.m	15 lb ft
Heated Oxygen Sensor (HO2S)	42 N.m	31 lb ft
Ignition Coil Bolt	10 N.m	89 lb in
Knock Sensor (KS)	23 N.m	17 lb ft
Manifold Absolute Pressure Sensor Fastener	4 N.m	35 lb in
Secondary Air Injection Check Valve Bolt	22 N.m	16 lb ft
Secondary Air Injection Pipe Fastener	10 N.m	89 lb in
Secondary Air Injection Pump Bolt	58 N.m	43 lb ft
Spark Plug	25 N.m	18 lb ft
Throttle Body Bolt	10 N.m	89 lb in

Fastener Tightening Specifications

Application	Type of Material	GM Part Number
Anti-Seize Compound	Lubricant	GM P/N 88862477 (Canadian P/N 88862478)
Camshaft Gear Access Hole Plug	Sealant	GM P/N 12346004 (Canadian P/N 10953480)
Coolant Temperature Sensor Threads	Sealant	GM P/N 12346004 (Canadian P/N 10953480)
Fuel Injection Fuel Rail Bolts	Sealant	GM P/N 12345382 (Canadian P/N 10953489)
Intake Air Temperature Sensor Threads	Sealant	GM P/N 12346004 (Canadian P/N 10953480)
Top Engine Cleaner	Cleaner	GM P/N 1052626 (Canadian P/N 993026)

Adhesives, Fluids, Lubricants, and Sealers