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Discussion Starter · #1 ·
Here's the deal everyone. before I get bashed for asking a probably overly asked question, let me explain what I have going on. I have a 99 wrangler 4.0 manual. When I'm driving along in 4th of 5th gear it seems like my speedo climbs about 3mph then pauses, then moves up another 3mph, pauses, and so on. It's like my speedometer does not read real time speed. It climbs in increments of roughly 3mph. I'm assuming it happens in the lower gears as well, but since the gears are so short, I dont really notice it until the later gears.

Problem number 2! (may be related to problem 1 or may not.) I have the typical tj problem where my airbag light comes on, followed by a check engine light, finally followed by my rpms and mphs dropping to zero.

question is, could these two problems be related, and how do I solve the problems.
 

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If you really feel that this is an "overly asked question" have you tried using the search function? Just curious.
 

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I have 99 also mine just went to 0 along with rpm, when got home turned off then none of the gauges worked. pulled speedo cluster out there are 2 plugs mine seemed loose so i used channel locks and adjusted the metal that the clips sit in. ( just bent up tiny bit) put speedo back in havent had any more problems since. happened about 3 weeks ago. hope this helps
 

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remove the gauge cluster ( the whole thing, it's only a few screws) remove the conectors from the back, check the conector to make sure there is no corrosion and then check the "pins"in the back of the cluster and "scratch"then with a small screw driver. those tend to corrode.
it did on my 98 tj
 

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Discussion Starter · #6 ·
I have indeed googled this problem and only seem to find the source of the problem. Not a solution. Many said it was just a recall and take it to the dealership. Dealer parts usually cost an arm and a leg. Ill just buy some dielectric grease and connection cleaner. Thanks for the help guys.
 

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Im not sure if we are having the same problem but..

Driving along and my 2 center gauges drop and stop working. They will eventually come back though. I have seen the message NO BUS come up on the digital read out too.

Anyone have any ideas? or a DIY fix?
 

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Im not sure if we are having the same problem but..

Driving along and my 2 center gauges drop and stop working. They will eventually come back though. I have seen the message NO BUS come up on the digital read out too.

Anyone have any ideas? or a DIY fix?
I just started experiencing the same problem with my 2000 wrangler, the two gauges go out while my airbag light turns on then the check engine light while displaying the message no bus or no bu5, if you happen to figure it out let me know and i will do the same sorry no help at the moment but your not alone...lol
 

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Here you go, the bus connector is what goes wonky. "NO BUS" is a signal to you that there is a loss of signal in the bus circuit.

Here's the TSB on it.


"TSB NUMBER: 08-15-99

GROUP: Electrical

DATE: May 21, 1999

THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN NUMBER 08-20-98 REV. A, DATED OCTOBER 2, 1998, WHICH SHOULD BE REMOVED FROM YOUR FILES AND NOTED IN THE BOUND TECHNICAL SERVICE BULLETIN BOOK, PUBLICATION NUMBER 81-699-99003. THIS IS A COMPLETE REVISION TO THE PROCEDURE.

SUBJECT:
Erratic, Intermittent Cluster Operation/Intermittent Air Bag Warning light.

OVERVIEW:
This bulletin involves installing a repair harness containing a revised instrument cluster connector.

MODELS:

1998 - 1999 (TJ) Wrangler
1998 - 1999 (XJ) Cherokee

SYMPTOM/CONDITION:
Some vehicles may exhibit an intermittent illumination of the air bag warning light or an intermittent tachometer or speedometer drop out. An Airbag Electronic Control Module (AECM) fault code - "No Cluster CCD BUS" message will be present.

DIAGNOSIS:
Using the DRB III(R), read and record all active and stored fault codes in the AECM. This condition is caused by minor oxidation of the BUS circuit terminals at the instrument cluster connector. Electrical terminals will show signs of oxidation, which will appear as darkened lines or marks on the cluster male terminals. These often appear as gray or black marks rather than the appearance of oxidation or corrosion usually associated with higher current carrying circuits. This condition will set a "NO CLUSTER CCD BUS" message. The fault code will usually be stored and not active. THIS TECHNICAL SERVICE BULLETIN WILL NOT ADDRESS FUEL OR OIL PRESSURE GAUGE ISSUES. If this fault code is present, either active or stored perform the Repair Procedure.

PARTS REQUIRED:

1 05016261AA Cluster Connector Patch Harness
1 04856975 Electric Contact Cleaner
2 04778570 Heat Shrink Tubing
POLICY: Reimbursable within the provisions of the warranty.

TIME ALLOWANCE:

Labor Operation No: 08-90-90-91 0.6 Hrs. "
 
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