i have no clue whats wrong!!!
03-31-2010, 08:26 AM
#1
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Year: 1990 laredo
Model: Cherokee
Engine: 4.0 straight 6
engine problems
i have a 1990 xj laredo .my jeep is runing funny when i go 15-60mph it revse high and it feels like it has no power.i changed my trans fluid and filter about three weeks ago and the magnets were clean.its like when i take off it has to stay reved up high for it to go .but if i stomp on it it goes .this only happens in drive.and its not somthing that gradually started happening .it just started this morning.
i just cleaned the throttle body and its still doing it and i found a cracked vacum hose i fixed that to but it still keeps doing the same thing.
i just cleaned the throttle body and its still doing it and i found a cracked vacum hose i fixed that to but it still keeps doing the same thing.
Last edited by carencro xj; 03-31-2010 at 12:14 PM.
03-31-2010, 12:07 PM
#5
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Year: 1990 laredo
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Engine: 4.0 straight 6
03-31-2010, 12:10 PM
#6
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Year: 1990 laredo
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Engine: 4.0 straight 6
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03-31-2010, 12:18 PM
#8
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Year: 1990 laredo
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Engine: 4.0 straight 6
03-31-2010, 12:24 PM
#9
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Year: 1989
Model: Cherokee
Engine: 4.0 I6
Check your TPS. It actually controls your transmission (no one said Jeep designers were smart). There are many write-ups. Try this one. http://billyxj.tripod.com/SENSORS1/index.html
03-31-2010, 12:26 PM
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Year: 1990 laredo
Model: Cherokee
Engine: 4.0 straight 6
Check your TPS. It actually controls your transmission (no one said Jeep designers were smart). There are many write-ups. Try this one. http://billyxj.tripod.com/SENSORS1/index.html
i just took a look at it but idk how to tell if its bad so ill try this
Last edited by carencro xj; 03-31-2010 at 12:31 PM.
03-31-2010, 02:49 PM
#11
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Year: 1990 Limited
Model: Cherokee
Engine: 4.0 inline 6cyl
Sounds like your Throttle Position Sensor. Make sure you always disconnect the negative battery cable before working on your baby. It senses how easy your pressing on the pedal and shifts accordingly. When you floor it, it senses it and down shifts On easy acceleration it shifts up for cruising. My jeep wouldnt start one day and I started messing with wires. I unplugged the TPS and plugged it back in checking the terminals. When it started back up it wouldnt shift without flooring it rpms reaching 4500. After the new TPS it started shifting normal.
Last edited by Ninja Falco; 03-31-2010 at 02:51 PM.
03-31-2010, 03:12 PM
#12
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Year: 1990 laredo
Model: Cherokee
Engine: 4.0 straight 6
Check your TPS. It actually controls your transmission (no one said Jeep designers were smart). There are many write-ups. Try this one. http://billyxj.tripod.com/SENSORS1/index.html
i guess my tps is bad cause i cant even set it
03-31-2010, 03:15 PM
#13
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Year: 1990 laredo
Model: Cherokee
Engine: 4.0 straight 6
Sounds like your Throttle Position Sensor. Make sure you always disconnect the negative battery cable before working on your baby. It senses how easy your pressing on the pedal and shifts accordingly. When you floor it, it senses it and down shifts On easy acceleration it shifts up for cruising. My jeep wouldnt start one day and I started messing with wires. I unplugged the TPS and plugged it back in checking the terminals. When it started back up it wouldnt shift without flooring it rpms reaching 4500. After the new TPS it started shifting normal.
thats exactly what its doing .do i have to set it when i get the new one and if so can you tell me how.
03-31-2010, 08:48 PM
#14
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Year: 1990 laredo
Model: Cherokee
Engine: 4.0 straight 6
Sounds like your Throttle Position Sensor. Make sure you always disconnect the negative battery cable before working on your baby. It senses how easy your pressing on the pedal and shifts accordingly. When you floor it, it senses it and down shifts On easy acceleration it shifts up for cruising. My jeep wouldnt start one day and I started messing with wires. I unplugged the TPS and plugged it back in checking the terminals. When it started back up it wouldnt shift without flooring it rpms reaching 4500. After the new TPS it started shifting normal.
thanks i changed it problem solved.
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