1999 Isuzu NPR no 4th and no overdrive

Tiny
MURFIT
  • MEMBER
  • 1999 ISUZU NPR
Transmission problem
1999 Isuzu NPR 4 cyl Two Wheel Drive Automatic 112k miles

spedo not working in dash sensor s both good gear for spedo not brooken wiring `looks good at connector
Sunday, March 8th, 2009 AT 10:15 PM

3 Replies

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
Are you getting a check engine light? Are all fuses good? Any more information you can give us will help solve your problem. Please advise.
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Monday, March 9th, 2009 AT 1:13 AM
Tiny
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Fuses all good no light on but it did have a lot of codes cleared them spedo code came back both sensors good clock not registering 123 shifts perfect
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Monday, March 9th, 2009 AT 7:35 AM
Tiny
JAMES W.
  • MECHANIC
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If driving and driven gears are both good, It is probably the vehicle speed sensor. You should be able to verify this with a computer diagnostic unit with vehicle either running on blocks or doen the road. If VSS checks good, it must be the speedo head itself.
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Monday, March 9th, 2009 AT 11:20 AM

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