My 1998 JGC Quadra Drive was going down the highway, it started making a loud ticking or knocking, dropped speed while still holding gas down and started jerking and then eventually died. Would not start again. All gauges were showing normal and the check engine light never did come on. Any ideas what it could be?
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sounds like lower end bearing damage (connecting rod) when oil level drops at interstate speed a connecting rod bearing will seize very quickly thus causing the bearing to spin in the rod and enlarge clearance . that is the knocking sound you here .
forget the boyfriend and take it to an accredited service center for a proper diagnosis and quote
knocks are big ends or mains , and ticks are hydraulic followers
all could be a bad cam but a proper diagnosis will make sure
If this sound only happens when you first start it in the morning, and then goes away, then you are experiencing either lifter ticking, or piston slap. These both are fairly normal for this vehicle when it's getting higher in the miles, and before the oil gets to all the parts. Once you shut the engine off, the oil drains down, and it has to recirculate some of it. This takes a couple of seconds sometimes, and you hear this knocking sound when it happens, especially if it's cold out, or you are using thicker oil than recommended.
If the knocking sound continues after the vehicle has been running, then you need to have someone check it out for sure, because you could have a connecting rod knocking. This means that your engine is about to go, and you should not drive it.