I just bought a 2000 Dodge Ram 1500 with the 5.9 liter V 8. The speedo and tach don't work so I'm not sure how many miles are on it. Last shown is 148K.

Asked by Mar 30, 2016 at 07:19 PM about the 2000 Dodge Ram 1500 2 Dr SLT Extended Cab SB

Question type: Maintenance & Repair

I just bought a 2000 Dodge Ram 1500 with the 5.9 liter V 8.  The speedo
and tach don't work so I'm not sure how many miles are on it.  Last shown is
148K.  It runs rough when started but then smooths out (mostly) when
warmed up.  It still feels shakey, hesitant and weak however like it's only
running on 7 cylinders.  The plugs are all good and are a frosty white color
(too lean?), the wires, cap and rotor are new.  It's showing codes P0500
Vehicle Speed Sensor Fault as well as P1740 TCM Internal Malfunction.  
I've poured a can of Sea Foam in a fresh tank and have used up about half
the tank but so far no improvement.  I'd really like to get this truck running
100%.  Any advice???
Thanks,
Dave

4 Answers

98,375

The VSS can cause the speedo not to work and give an improper signal to TCM causing it to malfunction. So the first thing to do is to replace the VSS and check the wiring from it make sure it isn't burnt or shredded by rodents, then see if the speedometer works, if it does then clear the computer system and run a relearn cycle and watch for the check engine light to return, if it don't then you can go onto the tach. That is usually the head but it can also be wiring or connection at the cluster. HTH

1 of 1 people found this helpful.

Thanks for your ideas. Ill check / replace the VSS tomorrow and check out the wiring. The tach actually works. The ABS light is also on so looking into that. It could all be related. What do you think about the P1740 TCM Internal Malfunction code?

98,375

Replace the VSS first as it tells the computer the speed and the computer tell the TCM, if there is no signal to the computer to send the computer subs in a value so it will drive but the TCM can misread this value and set a code as an internal error. ABS light can be many things, wheel speed sensors, rabs valves, the pump, you will need the codes for this system also.

1 of 1 people found this helpful.

Thank you again!

Your Answer

Ram 1500

Looking for a Used Ram 1500 in your area?

CarGurus has 10,701 nationwide Ram 1500 listings starting at $1,500.

ZIP:

Dodge Ram 1500 Experts

  • #1
    Dan Connell
    Reputation
    6,390
  • #2
    pudgybear
    Reputation
    6,160
  • #3
    dandyoun
    Reputation
    5,550
View All

Related Models For Sale

Used Ford F-150
2,236 Great Deals out of 181,369 listings starting at $1,500
Used Chevrolet Silverado 1500
2,146 Great Deals out of 183,298 listings starting at $1,693
Used Dodge Ram 2500
152 Great Deals out of 5,076 listings starting at $2,988
Used GMC Sierra 1500
752 Great Deals out of 68,024 listings starting at $1,699
Used Toyota Tundra
433 Great Deals out of 33,696 listings starting at $1,999
Used Toyota Tacoma
552 Great Deals out of 42,058 listings starting at $2,999
Used Ford F-250 Super Duty
331 Great Deals out of 43,471 listings starting at $1,250
Used Dodge Dakota
132 Great Deals out of 3,698 listings starting at $1,650
Used Dodge Ram 3500
91 Great Deals out of 2,199 listings starting at $4,993
Used Chevrolet Tahoe
624 Great Deals out of 36,241 listings starting at $1,800

Used Cars For Sale

2010 Dodge Ram 1500 For Sale
66 Great Deals out of 1,400 listings starting at $6,799
2009 Dodge Ram 1500 For Sale
46 Great Deals out of 1,002 listings starting at $3,700
2008 Dodge Ram 1500 For Sale
60 Great Deals out of 1,501 listings starting at $3,000
2007 Dodge Ram 1500 For Sale
61 Great Deals out of 1,361 listings starting at $3,650
2006 Dodge Ram 1500 For Sale
68 Great Deals out of 1,272 listings starting at $2,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.