Question about 1996 Chevrolet Camaro

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Ignition trouble Hello I have problem with my camaro.It has a 3800 V6 engine with a 5 speed standard. It will start and idle smooth and cruise smooth but any time you try to accelerate under load it will stumble and act like it's got a dead plug.Then as soon as you back off it will smooth right out like nothing happened. I have replaced all the plugs and wires more than once as well as the coils individually and as a complete unit and it's not the cat. I have had it scanned more than once and get different answers each time as to what's wrong.I have changed the EGR valve for another used one.I have put a new TPS in and a new fuel filter.It has a new air filter.The security light stays on all the time. I did have to get a new key/tumbler assembly a year ago and the light went out for a while but it has been back on for 6 months or so now.I hope you can help ppoint me in the right direction. I am very mechanically inclined but these computerized hunks of junk are hard to figure out not having any proper test equipment.Thanks By the way my e-mail is rtsideup@aim.com

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  • Anonymous Oct 13, 2008

    1996 camaro, same problem, did all the same things, HELP.

    Thank You

    JwP

  • xWOODYHAYESx Jan 04, 2009

    bad acceleration under heavy load especially after it rains or I go through the car wash.. something seems to be getting wet and causing it to run bad dont know what it could be.

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Map sensor need to be replaced at or over 60,000 miles look at all black vacuum hoses ,cracking has happed to mine.But the map is more likely to be the prob.when it gets old or dirty it can't see how much air is going in and it will lean out the fuel mix till it stalls.It is the little black square with 3 wires on it black/wht ,pink and yellow. It is located after the big round black rubber 4 inch boot going in the air intake .

Posted on Jul 27, 2008

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I have a problem with my 1999 Chevy Camaro with L36 engine, 3.8L V6. When I start the car everything runs smooth and quiet as it's supposed to. After about 10 to 15 miles or about 20-30min of driving the...


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Which fuse is for cruise control in 2003 ford f150


The fuses for the speed control from the factory are :
Engine Compartment fuse panel #7,
Cab fuse panel Fuses #15, #13, #5

The fuse that goes to the recall part is Fuse #13, 20A

The recall is 05S28. Description: Speed Control Deactivation Switch.
The part number for the recall is : 1L1Z-9F924-AA
The part has a fuse inline that is marked as non serviceable, but 1 revision I saw, it was just an ATM fuse under tape. Not sure if this is the final revision that was used on your truck ( or should have been used ).


The self test for the Cruise Control ( for 00-03 MY, with the CC light on the cluster ) :

With the key off depress and hold the cruise control off button while turning the ignition to the run position,don't start the truck, the cruise light will flash once to let you know it is in self test.
Five additional flashes indicate a bad cruise control servo

Release the cruise off switch and within 5 seconds depress the other switches in sequence:
1. on
2. resume
3. coast
4. set/ accel
The speed control light will flash as each switch is depressed.

If the last one does not flash it may then flash a code

After this the cruise will move the throttle to test the actuator and the cable.
Make sure the throttle returns to idle and turn the key off.
----------------------

Self-Test Diagnostics

WARNING:
This test is a key on engine off (KOEO) test only that is conducted in park only with emergency brake fully engaged.

1. Enter self-test diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. Five additional flashes at this point indicate a defective speed control servo. Release the OFF switch.

2. Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.

If the ON switch is not depressed within five seconds after entering the diagnostics mode, the module times out and the procedure must be started over.

The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.

Note:
There will be a slight delay when the last button is pressed and the lamp flashes.

3. A lamp flash with the last button (SET/ACCEL) indicates that the static test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.

If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:

- 2 flashes - BPP defective, circuit is defective, brake applied, CPP switch or jumper (if equipped).

- 3 flashes - deactivator switch is open or circuit defective.

- 4 flashes - vehicle speed signal is out of range or circuit is defective

4. Immediately (.25 second delay) after the static test, the speed control servo does a dynamic test by automatically actuating the throttle lever from 8 mm (0.315 in) to 12 mm (0.472 in) of travel from the idle position. During the dynamic throttle pull, observe throttle movement to witness any binding or sticking of the speed control cable and correct connection of speed control cable to throttle lever. Make sure the throttle returns to the idle position.

5. Return the ignition switch to the OFF position and proceed to the Symptom Chart.

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1 Answer

Cruise control no working on 2001 f-150 4 x 4 5.4


Did you have the recall done ?
recall 05S28. Description: Speed Control Deactivation Switch.

Try the self test for the Cruise Control :


With the key off depress and hold the cruise control off button while turning the ignition to the run position,don't start the truck, the cruise light will flash once to let you know it is in self test.
Five additional flashes indicate a bad cruise control servo

Release the cruise off switch and within 5 seconds depress the other switches in sequence:
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2. resume
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The speed control light will flash as each switch is depressed.

If the last one does not flash it may then flash a code

After this the cruise will move the throttle to test the actuator and the cable.
Make sure the throttle returns to idle and turn the key off.
----------------------

Self-Test Diagnostics

WARNING:
This test is a key on engine off (KOEO) test only that is conducted in park only with emergency brake fully engaged.

1. Enter self-test diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. Five additional flashes at this point indicate a defective speed control servo. Release the OFF switch.

2. Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.

If the ON switch is not depressed within five seconds after entering the diagnostics mode, the module times out and the procedure must be started over.

The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.

Note:
There will be a slight delay when the last button is pressed and the lamp flashes.

3. A lamp flash with the last button (SET/ACCEL) indicates that the static test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.

If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:

- 2 flashes - BPP defective, circuit is defective, brake applied, CPP switch or jumper (if equipped).

- 3 flashes - deactivator switch is open or circuit defective.

- 4 flashes - vehicle speed signal is out of range or circuit is defective

4. Immediately (.25 second delay) after the static test, the speed control servo does a dynamic test by automatically actuating the throttle lever from 8 mm (0.315 in) to 12 mm (0.472 in) of travel from the idle position. During the dynamic throttle pull, observe throttle movement to witness any binding or sticking of the speed control cable and correct connection of speed control cable to throttle lever. Make sure the throttle returns to the idle position.

5. Return the ignition switch to the OFF position and proceed to the Symptom Chart.

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1 Answer

94 Z28 runs rough until I cruise on the highway a few miles at a steady rpm and then the service engine light comes on and then it smooths out until I slow down to get off the highway..why?


1. Vacuum leaks
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3 Air filter clogged
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5. Timing chain worn, or jumped a cog.
6. Camshaft worn.
7. Valves burnt or leaking.
8. ignition system
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You'll just have to keep eliminating them, from cheapest to most expensive.

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1 Answer

2000 v6 5 spd nissan xterra idles high when in gear and rolling .


From the service manual:

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment
NGEC0549
PREPARATION
NGEC0549S01
1) Make sure that the following parts are in good order.
I Battery
I Ignition system
I Engine oil and coolant levels
I Fuses
I ECM harness connector
I Vacuum hoses
I Air intake system
(Oil filler cap, oil level gauge, etc.)
I Fuel pressure
I Engine compression
I EGR valve operation (If so equipped)
I Throttle valve
I Evaporative emission system
2) On air conditioner equipped models, checks should be carried out while the air conditioner is OFF.
3) On automatic transmission equipped models, when checking idle rpm, ignition timing and mixture ratio,
checks should be carried out while shift lever is in “N” position.
4) When measuring “CO” percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
5) Turn off headlamps, heater blower, rear defogger.
6) Keep front wheels pointed straight ahead.
7) Make the check after the cooling fan has stopped.

SEF976U
3. Open engine hood and run engine at about 2,000 rpm for about 2 minutes under no-load.
SEF977U
4. Perform diagnostic test mode II (Self-diagnostic results). Refer to EC-644.
SEF217U
OK or NG
OK ' GO TO 2.
NG ' 1. Repair or replace components as necessary.
2. GO TO 2.
BASIC SERVICE PROCEDURE VG33E
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-616
2 CHECK IGNITION TIMING
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
2. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed.
SEF978U
3. Turn off engine and disconnect throttle position sensor harness connector.
SEF975R
4. Start and rev engine (2,000 - 3,000 rpm) two or three times under no-load, then run at idle speed.
5. Check ignition timing with a timing light.
SEF371S
15°±2° BTDC (in “P” or “N” position)
OK or NG
OK ' GO TO 4.
NG ' GO TO 3.
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
BASIC SERVICE PROCEDURE VG33E
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-617
3 ADJUST IGNITION TIMING
1. Adjust ignition timing by turning distributor after loosening securing bolts.
2. Turn off engine and connect throttle position sensor harness connector to throttle position sensor.
SEF972R
' GO TO 2.
4 CHECK BASE IDLE SPEED
With CONSULT-II
1. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
PEF356V
700±50 rpm (in “P” or “N” position)
Without CONSULT-II
1. Check idle speed.
700±50 rpm (in “P” or “N” position)
OK or NG
OK ' GO TO 6.
NG ' GO TO 5.

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