Question about 1994 Chevrolet C1500

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Where is the map sensor on a1994 c1500chevy pickup located at its a 4.3 engine and its a automatic 2 w drive

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Have you checked on the paSSenger side floor kick panel where the computor is?

Posted on May 29, 2010

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Map sensor


Manifold Absolute Pressure Sensor

Print


OPERATION

See Figures 1, 2 and 3


0900c1528003c4d9.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: MAP sensor location-2.4L engine


0900c1528003c4da.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: MAP sensor location-3.0L engine


0900c1528003c4db.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 3: MAP sensor location-3.3L and 3.8L engines
The PCM supplies 5 volts of direct current to the Manifold Absolute Pressure (MAP) sensor. The MAP sensor then converts the intake manifold pressure into voltage. The PCM monitors the MAP sensor output voltage. As vacuum increases, the MAP sensor voltage decreases proportionately. Also, as vacuum decreases, the MAP sensor voltage increases proportionally.
With the ignition key ON , before the engine is started, the PCM determines atmospheric air pressure from the MAP sensor voltage. While the engine operates, the PCM figures out intake manifold pressure from the MAP sensor voltage. Based on the MAP sensor voltage and inputs from other sensors, the PCM adjusts spark advance and the air/fuel ratio. The MAP sensor is mounted to the intake manifold, near the throttle body inlet to the manifold. The sensor connects electrically to the PCM.


TESTING

See Figures 4, 5, 6 and 7


0900c1528003c4dc.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 4: Disengage the MAP sensor connector-3.0L engine shown

WARNING When testing the MAP sensor, make sure the harness wires do not become damaged by the test meter probes.

  1. Visually check the connector, making sure it is attached properly and that all of the terminals are straight, tight and free of corrosion.



0900c1528003c4dd.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 5: MAP sensor connector terminal identifications: (A) 5-volt supply, (B) sensor signal, (C) ground-3.0L engine shown


0900c1528003c4de.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 6: MAP sensor connector terminal identifications-2.4L, 3.3L and 3.8L engines


0900c1528003c4df.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 7: Using a digital volt-ohmmeter, test the MAP sensor voltage-3.0L engine shown

  1. Test the MAP sensor output voltage at the sensor connector between terminals B and C (2.4L, 3.3L and 3.8L engines), or A nd B (3.0L engine).
  2. With the ignition switch ON and the engine not running, the output voltage should be 4-5 volts. The voltage should fall to 1.5-2.1 volts with a hot, neutral idle speed condition. If OK, go to the next step. If not OK, go to Step 5.
  3. Test the PCM terminal 36 for the same voltage described in the previous step to make sure the wire harness is OK. Repair as necessary.
  4. Test the MAP sensor ground circuit at the sensor connector terminal A (2.4L, 3.3L and 3.8L engines) or C (3.0L engine) and PCM terminal 43. If OK, go to the next step. If not OK, repair as necessary.
  5. Test the MAP sensor supply voltage between the sensor connector terminals A and B (2.4L, 3.3L and 3.8L engines) r A and C (3.0L engine) with the ignition key in the ON position. The voltage should be about 4.5-5.5 volts.
  6. There should also be 4.5-5.5 volts at terminal 61 of the PCM. If OK, replace the MAP sensor.
  7. If not, repair or replace the wire harness as required.


REMOVAL & INSTALLATION

See Figures 1, 2, 3 and 4
The MAP sensor is mounted on the intake manifold near the throttle body inlet to the manifold.

  1. Disconnect the negative battery cable.
  2. On the 3.0L engine only, disconnect the vacuum hose from the MAP sensor.
  3. Detach the electrical connector from the MAP sensor.
  4. Unfasten the mounting screws, then remove the MAP sensor from the vehicle.

To install:
  1. Install the sensor onto the intake manifold and tighten the mounting screws to 35 inch lbs. (4 Nm).
  2. Attach the sensor electrical connector.
  3. On the 3.0L engine, connect the vacuum hose to the MAP sensor.
  4. Connect the negative battery cable.

Jul 21, 2012 | 1997 Plymouth Voyager

1 Answer

How to find codes for check engine light on


Check Engine Light Codes and Meanings
Long blinks Short blinks Problem
1 1 Camshaft position sensor
1 2 Mass air flow sensor
1 3 Engine coolant temperature sensor
1 4 Speed sensor
1 11 EVAP control system (flow)
1 14 Fuel injection system right bank (too rich)
1 15 Fuel injection system right bank (too lean)
2 1 Ignition circuit
2 3 Closed throttle position switch
2 5 Idle speed control
2 9 Fuel Injection system left bank (too rich)
2 10 Fuel Injection system left bank (too lean)
3 1 ECU
3 2 Exhaust gas recirculation system flow problem
3 3 Front left O2 sensor
3 4 Knock sensor
3 5 Exhaust gas recirculation temperature sensor
3 6 EGRC-BPT valve
3 7 Closed loop control
3 8 Closed loop control
4 1 Air intake temperature sensor
4 2 Fuel tank temperature sensor
4 3 Throttle position sensor
4 7 Crankshaft position sensor
5 3 Front right O2 sensor
5 4 Automatic transmission control unit
6 3 Cylinder #6 misfire
6 4 Cylinder #5 misfire
6 5 Cylinder #4 misfire
6 6 Cylinder #3 misfire
6 7 Cylinder #2 misfire
6 8 Cylinder #1 misfire
7 1 Multiple cylinder misfire
7 2 Three way catalytic converter (right side)
7 3 Three way catalytic converter (left side)
7 4 Evaporative emission control system pressure sensor
7 5 Evaporative emission control system
7 7 Rear O2 sensor
8 1 Vacuum cut valve bypass valve
8 2 Crank position sensor
8 3 Absolute pressure sensor
8 4 Automatic transmission control unit
8 6 Evaporative emission canister purge control solenoid valve
8 7 Evaporative emission Canister purge control solenoid valve circuit
9 1 Front Right O2 sensor
9 3 Evaporative emission Canister vent control valve
9 5 Crankshaft position sensor
9 8 Engine coolant temperature sensor
10 1 Front left O2 sensor
10 3 Park and Neutral position switch
10 5 EGRC solenoid valve
10 8 Evaporative emission canister purge volume control valve
11 1 Inhibitor switch
11 2 Revolution sensor
11 3 Improper shifting to first gear (Automatic transmission)
11 4 Improper shifting to second gear (Automatic transmission)
11 5 Improper shifting to third gear (Automatic transmission)
11 6 Improper shifting to fourth gear (Automatic transmission)
11 7 Solenoid valve lock up function
12 1 Shift solenoid B (Automatic transmission)
12 3 Overrun clutch solenoid valve (Automatic transmission)
12 4 Torque converter clutch solenoid valve (Automatic transmission)
12 5 Line pressure solenoid valve (Automatic transmission)
12 6 Throttle position sensor (Automatic transmission)
12 7 Engine speed signal
12 8 Fluid temperature sensor
13 2 MAP/BARO Switch Solenoid Valve
13 5 Fuel pump control module
13 8 Cooling fan

Dec 12, 2011 | 1995 Nissan Maxima

1 Answer

Where can i find the ect sensor on my 1999 cadillac deville


Click over pic for zoom...

zjlimited_1119.jpg

Fig. Showing the location of MAP Sensor and other components on the front of the engine: 1. Manifold Absolute Pressure (MAP) Sensor; 2. Idle Air Control (IAC) Valve; 3. Engine Coolant Temperature (ECT) Sensor; 4. Throttle Position (TP) Sensor

zjlimited_1120.jpg

Fig. Engine coolant temperature sensor (1).

Apr 28, 2011 | 1999 Cadillac DeVille

2 Answers

What would cause my jeep when you turn the corner to cut out? It has been doing it for a couple of days....we were stopped at a stop sign and it just cut out....yesterday we changed the fuel pump and it...


I cannot think of anything solid state that would malfunction when just turning a corner. However, the automatic idle speed motor may be malfunctioning. But, for your interest, here are the various engine controls that exist on the Jeep Grand Cherokee: COMPONENT LOCATIONS Fig. 1: Electronic engine control component locations - 2.5L engine shown 91074g07.gif
Fig. 2: Overhead view of the (A) automatic idle speed motor, (B) MAP sensor, (C) crankshaft position sensor wiring harness, (D) air temperature sensor, and (E) throttle position sensor - 1992 Cherokee with the 4.0L engine shown 91074p15.jpg
Fig. 3: Electronic engine control component locations - 4.0L engine shown 91074g08.gif
Fig. 4: Electronic engine control component locations - 5.2L and 5.9L engines (Part 1 of 2) 91074g05.gif
Fig. 5: Electronic engine control component locations - 5.2L and 5.9L engines (Part 2 of 2) 91074g06.gif

Oct 15, 2010 | 1997 Jeep Grand Cherokee

2 Answers

Where is the knock sensor located on my 92 Jeep Cherokee 4.0L straight 6 4WD?


I don't see the knock sensor on the 4.0L engine. --- COMPONENT LOCATIONS Fig. 1: Electronic engine control component locations - 2.5L engine shown 91074g07.gif
Fig. 2: Overhead view of the (A) automatic idle speed motor, (B) MAP sensor, (C) crankshaft position sensor wiring harness, (D) air temperature sensor, and (E) throttle position sensor - 1992 Cherokee with the 4.0L engine shown 91074p15.jpg
Fig. 3: Electronic engine control component locations - 4.0L engine shown 91074g08.gif
Fig. 4: Electronic engine control component locations - 5.2L and 5.9L engines (Part 1 of 2) 91074g05.gif
Fig. 5: Electronic engine control component locations - 5.2L and 5.9L engines (Part 2 of 2) 91074g06.gif
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Sep 30, 2010 | 1992 Jeep Cherokee Briarwood

1 Answer

Need to find out what exactly these codes mean. used a Matco Proscan Plus MD1005 for a 1996 dodge caravan under the transmission portion. its codes 12, 36, 53. i need to figiure out what the problem is...


here you go hope it helps,dont forget to vote on answer thanks
88–95 3.0L (Except Monaco, Premier & Stealth),
3.3L, 3.5L & 3.8L Engines
11
Engine Has Not Been Cranked Since Battery Was Disconnected{4}
No Crank Sensor Signal During Engine Cranking{3}
12
Memory Standby Power Recently Lost
13
MAP Sensor Pneumatic Circuit
14
MAP Sensor Electrical Circuit
15
Vehicle/Distance Sensor Circuit
16
Loss Of Battery Voltage Sense
17
Engine Running Too Cool
21
Problem In Oxygen Feedback Circuit
22
Coolant Temperature Sensor Circuit
23
Charge Temperature Sensor Circuit
24
Throttle Position Sensor Circuit
25
AIS Motor Drive Circuit
26
Injector Current Limit Not Achieved
27
Injector Driver Interface Circuit{1}
Injector Control Circuit{2}
31
Purge Solenoid Circuit
32
EGR Diagnostics
33
A/C Cutout Relay Circuit Or A/C Clutch Relay Circuit
34
Fault In Speed Control Solenoid Driver Circuit
35
Fault In Fan Relay Circuit
37
Part Throttle Unlock Solenoid Driver Circuit
41
Fault In Charging System Or No Field Current
42
Fault In ASD Relay Driver Circuit
43
In Ignition Coil Control Circuits
44
Lose Of FJ2 To Logic Board
46
Battery Voltage Is Too High
47
Battery Voltage Is Too Low
51
Lean Condition Is Indicated
52
Rich Condition Is Indicated
53
Internal Problem In Module
54
Fault In Distributor High Data Rate Pickup Circuit{1}
No Sync Pickup Signal{2}
55
End Of Message
62
Unsuccessful Attempt To Update EMR Mileage
63
Fault Error{1}
Controller Failure EEPROM Write Denied{2}
65
Manifold Tuning Valve
66
CCD Bus System
77
Speed Control Relay Circuit
{1}—1988–91 models.
{2}—1992–95 models.
{3}—1990–95 models.
{4}—Neon.
If you need more just ask Thanks Db
A
You are propably going to want to have the TCM(trans,control module)scanned as its possible your scanner is only doing the engine codes.let me know if you need some direction as what to check and do ok?

Sep 12, 2010 | Dodge Caravan Cars & Trucks

1 Answer

1990 Voyager. Need code definitions from check engine light. Codes retrieved by turning key on 4 times and counting check engine light flashes. codes were: 12 41 25 55.


here you go hope it helps,dont forget to vote on answer thanks
88–95 3.0L (Except Monaco, Premier & Stealth),
3.3L, 3.5L & 3.8L Engines
11
Engine Has Not Been Cranked Since Battery Was Disconnected{4}
No Crank Sensor Signal During Engine Cranking{3}
12
Memory Standby Power Recently Lost
13
MAP Sensor Pneumatic Circuit
14
MAP Sensor Electrical Circuit
15
Vehicle/Distance Sensor Circuit
16
Loss Of Battery Voltage Sense
17
Engine Running Too Cool
21
Problem In Oxygen Feedback Circuit
22
Coolant Temperature Sensor Circuit
23
Charge Temperature Sensor Circuit
24
Throttle Position Sensor Circuit
25
AIS Motor Drive Circuit
26
Injector Current Limit Not Achieved
27
Injector Driver Interface Circuit{1}
Injector Control Circuit{2}
31
Purge Solenoid Circuit
32
EGR Diagnostics
33
A/C Cutout Relay Circuit Or A/C Clutch Relay Circuit
34
Fault In Speed Control Solenoid Driver Circuit
35
Fault In Fan Relay Circuit
37
Part Throttle Unlock Solenoid Driver Circuit
41
Fault In Charging System Or No Field Current
42
Fault In ASD Relay Driver Circuit
43
In Ignition Coil Control Circuits
44
Lose Of FJ2 To Logic Board
46
Battery Voltage Is Too High
47
Battery Voltage Is Too Low
51
Lean Condition Is Indicated
52
Rich Condition Is Indicated
53
Internal Problem In Module
54
Fault In Distributor High Data Rate Pickup Circuit{1}
No Sync Pickup Signal{2}
55
End Of Message
62
Unsuccessful Attempt To Update EMR Mileage
63
Fault Error{1}
Controller Failure EEPROM Write Denied{2}
65
Manifold Tuning Valve
66
CCD Bus System
77
Speed Control Relay Circuit

{1}—1988–91 models.
{2}—1992–95 models.
{3}—1990–95 models.
{4}—Neon.
If you need more just ask Thanks Db

Aug 18, 2010 | 1990 Plymouth Voyager

1 Answer

Location of IAT sensor in the car?


For Hyundai Car 1999-05 - Intake Air Temperature (IAT) Sensor Location (check several options):

1.- The IAT sensor is located against the firewall to the left side of the engine. It is combined with the Manifold Absolute Pressure (MAP) sensor.

2.- This sensor is located in the air intake plenum assembly. On some vehicles this sensor is combined with the MAP/MAF sensor.

3.- The IAT sensor is located in the air plenum assembly. On some vehicles it is combined with the MAF sensor.

4.- This sensor is located in the air intake plenum assembly. On some vehicles this sensor is combined with the MAP/MAF sensor.

5.- This sensor is located in the air intake plenum assembly. It is combined with the Manifold Absolute Pressure (AFS) sensor.

6.- This sensor is located in the air intake plenum assembly. It is combined with the Manifold Absolute Pressure (AFS) sensor.


In the next graphic, check the position 2...

caae1be.gif

FIG : Underhood sensor locations-Elantra 2004-2005 2.0L engine


Hope this help (remember comment and rated this) TY for using Fixya.

Apr 08, 2010 | 2004 Hyundai Elantra

1 Answer

88 jeep yj carb 6 cly automatic, where is the map


If you have a carb you do not have a map or IAC valve. They are on fuel injected throttle body setups. You really should go to an auto parts store and get a book if your really interested.

Nov 23, 2009 | Jeep Wrangler Cars & Trucks

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