I have the same issue with my 99 TJ. After a ton of searching, I came across a technical service bulletin (NHTSA #606058, Service bulletin #081599, Replacement bulletin #082098) about the problem. There is an electrical component that is failing. I called the dealership and they told me it's about 200 bucks to fix.
I had the same problem on my 99 Jeep wrangler. Although I had mine fixed while under warranty, a temporary fix is to give an open handed smack to the top left of the dashboard. I say open handed because you want to smack fairly firmly but not break anything. Use this until you can afford to fix it properly.
The problem is a loose (poorly designed) connector under the dash, smacking it jars it and reestablishes the connection till the next time it comes loose.
The speedometer signal comes from the transmission computer via the output speed sensor on the front of the transmission case. The tachometer signal comes from the engine computer via the crankshaft position sensor on the rear of the bell housing.
You have a failure in the communication system on the van. It will require a scan tool to diagnose.
It is telling you that one of the gauges is not within normal range. It could be you are not charging or overheating or have little or no oil pressure.
The check gauges light means that one of the gauges is out of the safe range.
It does not have a cable. The speedometer signal comes from the ABS sensor in the top of the rear axle.It does not have a cable. The speedometer signal comes from the ABS sensor in the top of the rear axle.
The speedometer signal is all electronic. There is no cable. The signal comes from speed sensors.The speedometer signal is all electronic. There is no cable. The signal comes from speed sensors.
Yes it comes with a speedometer.
I have a 2000 Dodge Grand Caravan that has the same problem. A friend of mine had the same van with the problem. He took his to the shop, they determined that there was a short in the wiring harness. It was rubbing up against something. It cost $200 to have it repaired. I'm guessing that is the problem with mine as well. If I hit a bump and the air is moist it will cause the gagues of the tachometer, odometer, and speedometer to drop. The ABS light comes on and all of the letters (R, N, D, etc..) for the gears are circled. It usually comes back on after a while but the longest amount of time was for 125 miles.
The check gauges light comes on when one of the gauges is out of its safe range. It could be the alternator over or under charging, oil pressure low, or the engine overheating.The check gauges light comes on when one of the gauges is out of its safe range. It could be the alternator over or under charging, oil pressure low, or the engine overheating.
The engine may be low on oil, when you make a turn the oil pickup tube sucks air and the oil pressure drops. Check the gauges when the light comes on, one of them is out of range.
Have electronic vehicle speed sensor in transmission checked out. It will cause loss of speedometer function and set a fault code(check engine light).
Yes, that is usually where the rpm signal comes from.