blowre1
Registered User
I just bought a '92 crew-cab, long bed 4x4 and I'm starting to work out the kinks (I'll try to post some picks soon ). After finals, we (me and my pop) changed all 4 ball joints, both tie rods, and front u-joints.
When I first start the truck in the morning it knocks and idles around 600 rpm with no pedal pressed. If I leave it there idling, it will eventually speed up and the knock goes away. But if I push the pedal and speed it up to about 1000 rpm it stops knocking instantly, the truck warms up quickly, and the warm idle picks up. Once warm, the truck idles 800-900 rpm.
1) What makes it knock other than the 321,000 miles worth of wear? Can the oil pressure be low at low rpms? It's hellishly, deafiningly loud when knocking.
2) Can I adjust the cold idle so that it speeds up and warms up faster by itself? Like 1100-1200 rpm cold (like a powerstroke?) and then drop back to 800-900 once warm?
I read Agnem's tech article about what to look for with the cold start, and even talked to my dad at length who is a darn good mechanic, but we don't know enough about the idle settings.
Anyone recommend a good manual for this kind of stuff?
Thanks Guys,
Brooks
When I first start the truck in the morning it knocks and idles around 600 rpm with no pedal pressed. If I leave it there idling, it will eventually speed up and the knock goes away. But if I push the pedal and speed it up to about 1000 rpm it stops knocking instantly, the truck warms up quickly, and the warm idle picks up. Once warm, the truck idles 800-900 rpm.
1) What makes it knock other than the 321,000 miles worth of wear? Can the oil pressure be low at low rpms? It's hellishly, deafiningly loud when knocking.
2) Can I adjust the cold idle so that it speeds up and warms up faster by itself? Like 1100-1200 rpm cold (like a powerstroke?) and then drop back to 800-900 once warm?
I read Agnem's tech article about what to look for with the cold start, and even talked to my dad at length who is a darn good mechanic, but we don't know enough about the idle settings.
Anyone recommend a good manual for this kind of stuff?
Thanks Guys,
Brooks