91 Wrangler stalls and won't restart
12-11-2005, 08:02 AM
#1
Guest
Posts: n/a
91 Wrangler stalls and won't restart
Sorry for the lack of information. I can't recreate the problem.
I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
semi-proficient at driving manual, has stalled backing out of the
driveway and another time driving out of the neighborhood and won't
start. The first time, when I got to the car 30 min later, it started
right up. This time, I heard her stall, went out and couldn't get it
started. I'll give it some time and try again. I drive it 98% of the
time with no issues. I can't remember if I've stalled recently.
Where should I begin?
CTM
I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
semi-proficient at driving manual, has stalled backing out of the
driveway and another time driving out of the neighborhood and won't
start. The first time, when I got to the car 30 min later, it started
right up. This time, I heard her stall, went out and couldn't get it
started. I'll give it some time and try again. I drive it 98% of the
time with no issues. I can't remember if I've stalled recently.
Where should I begin?
CTM
12-11-2005, 09:55 AM
#2
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
I would start by cleaning the connection on the CPS. They get corroded
around that age. The best cleaner is a spray contact cleaner but WD40
will do in a pinch. The plug and socket are located at the rear of the
intake manifold with the CPS on the bell housing back there.
Second I would verify the ground strap from the rear of the head to the
firewall is ok. If ratty, it will cause stalls as the vehicle steals
grounds from other locations.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Aug./05 http://www.imagestation.com/album/in...?id=2120343242
(More Off Road album links at bottom of the view page)
"testert555@gmail.com" wrote:
>
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
around that age. The best cleaner is a spray contact cleaner but WD40
will do in a pinch. The plug and socket are located at the rear of the
intake manifold with the CPS on the bell housing back there.
Second I would verify the ground strap from the rear of the head to the
firewall is ok. If ratty, it will cause stalls as the vehicle steals
grounds from other locations.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Aug./05 http://www.imagestation.com/album/in...?id=2120343242
(More Off Road album links at bottom of the view page)
"testert555@gmail.com" wrote:
>
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
12-11-2005, 09:55 AM
#3
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
I would start by cleaning the connection on the CPS. They get corroded
around that age. The best cleaner is a spray contact cleaner but WD40
will do in a pinch. The plug and socket are located at the rear of the
intake manifold with the CPS on the bell housing back there.
Second I would verify the ground strap from the rear of the head to the
firewall is ok. If ratty, it will cause stalls as the vehicle steals
grounds from other locations.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Aug./05 http://www.imagestation.com/album/in...?id=2120343242
(More Off Road album links at bottom of the view page)
"testert555@gmail.com" wrote:
>
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
around that age. The best cleaner is a spray contact cleaner but WD40
will do in a pinch. The plug and socket are located at the rear of the
intake manifold with the CPS on the bell housing back there.
Second I would verify the ground strap from the rear of the head to the
firewall is ok. If ratty, it will cause stalls as the vehicle steals
grounds from other locations.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Aug./05 http://www.imagestation.com/album/in...?id=2120343242
(More Off Road album links at bottom of the view page)
"testert555@gmail.com" wrote:
>
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
12-11-2005, 09:55 AM
#4
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
I would start by cleaning the connection on the CPS. They get corroded
around that age. The best cleaner is a spray contact cleaner but WD40
will do in a pinch. The plug and socket are located at the rear of the
intake manifold with the CPS on the bell housing back there.
Second I would verify the ground strap from the rear of the head to the
firewall is ok. If ratty, it will cause stalls as the vehicle steals
grounds from other locations.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Aug./05 http://www.imagestation.com/album/in...?id=2120343242
(More Off Road album links at bottom of the view page)
"testert555@gmail.com" wrote:
>
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
around that age. The best cleaner is a spray contact cleaner but WD40
will do in a pinch. The plug and socket are located at the rear of the
intake manifold with the CPS on the bell housing back there.
Second I would verify the ground strap from the rear of the head to the
firewall is ok. If ratty, it will cause stalls as the vehicle steals
grounds from other locations.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Aug./05 http://www.imagestation.com/album/in...?id=2120343242
(More Off Road album links at bottom of the view page)
"testert555@gmail.com" wrote:
>
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
12-11-2005, 09:56 AM
#5
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
Assuming you perform regularly scheduled maintenance, the most common cause
for your description is the Crankshaft Position Sensor (CPS). Have you
checked your codes? What are they? If you don't know how to check the
codes -- set emergency brake, start the vehicle in neutral, and run the RPM
up to 2500 rpm. Let up on the accelerator and let the RPM fall to idle,
then turn the key off, on, off, on -- leaving it in the on position, your
check engine light will begin to blink out a paired number sequence. Common
codes usually always present are 12 and 55 and of no concern. Remaining
codes are listed below.
91 Wrangler (YJ) 4.0L Error Codes
11 Ignition
12 Battery disconnected within last 50 starts
13 MAP Vacuum
14 MAP Electrical
15 Distance Sensor or Circuit
17 Engine coolant Temp too low -- Thermostat
21 Oxygen Sensor or Circuit
22 Coolant Temp Sensor or Circuit
23 MAT Sensor or Circuit
24 Throttle Position Sensor (TPS) or Circuit
25 Automatic Idle Speed (AIS) Circuit
27 Fuel Injector Control
33 Air Conditioning Clutch Relay
41 Alternator Field
42 Automatic Shutdown Relay
44 Battery Temp Sensor -- N/A
46 Battery Over Voltage
47 Battery Under Voltage
51 Oxygen Sensor - Lean Condition
52 Oxygen Sensor - Rich Condition
53 Internal Engine Controller Fault
54 Distributor Synch Pickup
55 End of Code Display
62 Emission Maint Reminder (EMR)
63 Controller Failure EEPROM Write Denied
<testert555@gmail.com> wrote in message
news:1134306127.992786.191190@z14g2000cwz.googlegr oups.com...
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
>
for your description is the Crankshaft Position Sensor (CPS). Have you
checked your codes? What are they? If you don't know how to check the
codes -- set emergency brake, start the vehicle in neutral, and run the RPM
up to 2500 rpm. Let up on the accelerator and let the RPM fall to idle,
then turn the key off, on, off, on -- leaving it in the on position, your
check engine light will begin to blink out a paired number sequence. Common
codes usually always present are 12 and 55 and of no concern. Remaining
codes are listed below.
91 Wrangler (YJ) 4.0L Error Codes
11 Ignition
12 Battery disconnected within last 50 starts
13 MAP Vacuum
14 MAP Electrical
15 Distance Sensor or Circuit
17 Engine coolant Temp too low -- Thermostat
21 Oxygen Sensor or Circuit
22 Coolant Temp Sensor or Circuit
23 MAT Sensor or Circuit
24 Throttle Position Sensor (TPS) or Circuit
25 Automatic Idle Speed (AIS) Circuit
27 Fuel Injector Control
33 Air Conditioning Clutch Relay
41 Alternator Field
42 Automatic Shutdown Relay
44 Battery Temp Sensor -- N/A
46 Battery Over Voltage
47 Battery Under Voltage
51 Oxygen Sensor - Lean Condition
52 Oxygen Sensor - Rich Condition
53 Internal Engine Controller Fault
54 Distributor Synch Pickup
55 End of Code Display
62 Emission Maint Reminder (EMR)
63 Controller Failure EEPROM Write Denied
<testert555@gmail.com> wrote in message
news:1134306127.992786.191190@z14g2000cwz.googlegr oups.com...
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
>
12-11-2005, 09:56 AM
#6
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
Assuming you perform regularly scheduled maintenance, the most common cause
for your description is the Crankshaft Position Sensor (CPS). Have you
checked your codes? What are they? If you don't know how to check the
codes -- set emergency brake, start the vehicle in neutral, and run the RPM
up to 2500 rpm. Let up on the accelerator and let the RPM fall to idle,
then turn the key off, on, off, on -- leaving it in the on position, your
check engine light will begin to blink out a paired number sequence. Common
codes usually always present are 12 and 55 and of no concern. Remaining
codes are listed below.
91 Wrangler (YJ) 4.0L Error Codes
11 Ignition
12 Battery disconnected within last 50 starts
13 MAP Vacuum
14 MAP Electrical
15 Distance Sensor or Circuit
17 Engine coolant Temp too low -- Thermostat
21 Oxygen Sensor or Circuit
22 Coolant Temp Sensor or Circuit
23 MAT Sensor or Circuit
24 Throttle Position Sensor (TPS) or Circuit
25 Automatic Idle Speed (AIS) Circuit
27 Fuel Injector Control
33 Air Conditioning Clutch Relay
41 Alternator Field
42 Automatic Shutdown Relay
44 Battery Temp Sensor -- N/A
46 Battery Over Voltage
47 Battery Under Voltage
51 Oxygen Sensor - Lean Condition
52 Oxygen Sensor - Rich Condition
53 Internal Engine Controller Fault
54 Distributor Synch Pickup
55 End of Code Display
62 Emission Maint Reminder (EMR)
63 Controller Failure EEPROM Write Denied
<testert555@gmail.com> wrote in message
news:1134306127.992786.191190@z14g2000cwz.googlegr oups.com...
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
>
for your description is the Crankshaft Position Sensor (CPS). Have you
checked your codes? What are they? If you don't know how to check the
codes -- set emergency brake, start the vehicle in neutral, and run the RPM
up to 2500 rpm. Let up on the accelerator and let the RPM fall to idle,
then turn the key off, on, off, on -- leaving it in the on position, your
check engine light will begin to blink out a paired number sequence. Common
codes usually always present are 12 and 55 and of no concern. Remaining
codes are listed below.
91 Wrangler (YJ) 4.0L Error Codes
11 Ignition
12 Battery disconnected within last 50 starts
13 MAP Vacuum
14 MAP Electrical
15 Distance Sensor or Circuit
17 Engine coolant Temp too low -- Thermostat
21 Oxygen Sensor or Circuit
22 Coolant Temp Sensor or Circuit
23 MAT Sensor or Circuit
24 Throttle Position Sensor (TPS) or Circuit
25 Automatic Idle Speed (AIS) Circuit
27 Fuel Injector Control
33 Air Conditioning Clutch Relay
41 Alternator Field
42 Automatic Shutdown Relay
44 Battery Temp Sensor -- N/A
46 Battery Over Voltage
47 Battery Under Voltage
51 Oxygen Sensor - Lean Condition
52 Oxygen Sensor - Rich Condition
53 Internal Engine Controller Fault
54 Distributor Synch Pickup
55 End of Code Display
62 Emission Maint Reminder (EMR)
63 Controller Failure EEPROM Write Denied
<testert555@gmail.com> wrote in message
news:1134306127.992786.191190@z14g2000cwz.googlegr oups.com...
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
>
12-11-2005, 09:56 AM
#7
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
Assuming you perform regularly scheduled maintenance, the most common cause
for your description is the Crankshaft Position Sensor (CPS). Have you
checked your codes? What are they? If you don't know how to check the
codes -- set emergency brake, start the vehicle in neutral, and run the RPM
up to 2500 rpm. Let up on the accelerator and let the RPM fall to idle,
then turn the key off, on, off, on -- leaving it in the on position, your
check engine light will begin to blink out a paired number sequence. Common
codes usually always present are 12 and 55 and of no concern. Remaining
codes are listed below.
91 Wrangler (YJ) 4.0L Error Codes
11 Ignition
12 Battery disconnected within last 50 starts
13 MAP Vacuum
14 MAP Electrical
15 Distance Sensor or Circuit
17 Engine coolant Temp too low -- Thermostat
21 Oxygen Sensor or Circuit
22 Coolant Temp Sensor or Circuit
23 MAT Sensor or Circuit
24 Throttle Position Sensor (TPS) or Circuit
25 Automatic Idle Speed (AIS) Circuit
27 Fuel Injector Control
33 Air Conditioning Clutch Relay
41 Alternator Field
42 Automatic Shutdown Relay
44 Battery Temp Sensor -- N/A
46 Battery Over Voltage
47 Battery Under Voltage
51 Oxygen Sensor - Lean Condition
52 Oxygen Sensor - Rich Condition
53 Internal Engine Controller Fault
54 Distributor Synch Pickup
55 End of Code Display
62 Emission Maint Reminder (EMR)
63 Controller Failure EEPROM Write Denied
<testert555@gmail.com> wrote in message
news:1134306127.992786.191190@z14g2000cwz.googlegr oups.com...
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
>
for your description is the Crankshaft Position Sensor (CPS). Have you
checked your codes? What are they? If you don't know how to check the
codes -- set emergency brake, start the vehicle in neutral, and run the RPM
up to 2500 rpm. Let up on the accelerator and let the RPM fall to idle,
then turn the key off, on, off, on -- leaving it in the on position, your
check engine light will begin to blink out a paired number sequence. Common
codes usually always present are 12 and 55 and of no concern. Remaining
codes are listed below.
91 Wrangler (YJ) 4.0L Error Codes
11 Ignition
12 Battery disconnected within last 50 starts
13 MAP Vacuum
14 MAP Electrical
15 Distance Sensor or Circuit
17 Engine coolant Temp too low -- Thermostat
21 Oxygen Sensor or Circuit
22 Coolant Temp Sensor or Circuit
23 MAT Sensor or Circuit
24 Throttle Position Sensor (TPS) or Circuit
25 Automatic Idle Speed (AIS) Circuit
27 Fuel Injector Control
33 Air Conditioning Clutch Relay
41 Alternator Field
42 Automatic Shutdown Relay
44 Battery Temp Sensor -- N/A
46 Battery Over Voltage
47 Battery Under Voltage
51 Oxygen Sensor - Lean Condition
52 Oxygen Sensor - Rich Condition
53 Internal Engine Controller Fault
54 Distributor Synch Pickup
55 End of Code Display
62 Emission Maint Reminder (EMR)
63 Controller Failure EEPROM Write Denied
<testert555@gmail.com> wrote in message
news:1134306127.992786.191190@z14g2000cwz.googlegr oups.com...
> Sorry for the lack of information. I can't recreate the problem.
>
> I have a 91 Wranger 4.0 with 125000 miles. My wife, who is
> semi-proficient at driving manual, has stalled backing out of the
> driveway and another time driving out of the neighborhood and won't
> start. The first time, when I got to the car 30 min later, it started
> right up. This time, I heard her stall, went out and couldn't get it
> started. I'll give it some time and try again. I drive it 98% of the
> time with no issues. I can't remember if I've stalled recently.
>
> Where should I begin?
>
> CTM
>
12-11-2005, 12:06 PM
#8
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
In case it makes a difference, I just went out after letting it sit
for 45 min, and again, it started right up. Both stalls occurred
within 2 minutes of startup and each time, the engine died because of
shifting issues not mysteriously.
Thank you
CTM
for 45 min, and again, it started right up. Both stalls occurred
within 2 minutes of startup and each time, the engine died because of
shifting issues not mysteriously.
Thank you
CTM
12-11-2005, 12:06 PM
#9
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
In case it makes a difference, I just went out after letting it sit
for 45 min, and again, it started right up. Both stalls occurred
within 2 minutes of startup and each time, the engine died because of
shifting issues not mysteriously.
Thank you
CTM
for 45 min, and again, it started right up. Both stalls occurred
within 2 minutes of startup and each time, the engine died because of
shifting issues not mysteriously.
Thank you
CTM
12-11-2005, 12:06 PM
#10
Guest
Posts: n/a
Re: 91 Wrangler stalls and won't restart
In case it makes a difference, I just went out after letting it sit
for 45 min, and again, it started right up. Both stalls occurred
within 2 minutes of startup and each time, the engine died because of
shifting issues not mysteriously.
Thank you
CTM
for 45 min, and again, it started right up. Both stalls occurred
within 2 minutes of startup and each time, the engine died because of
shifting issues not mysteriously.
Thank you
CTM
