chevy 4.8 engine problems
Water pump failure happens for several factors including a faulty pump bearing faulty gasket faulty internal impeller etc. I have a 2001 chevy silverado with a 48 engine my problem is that i am getting current to the driver side of the - Answered by a verified Chevy Mechanic.
4 8 Vortec Engine Everything You Should Know
The motor is old and sluggish but the only real problem is that it uses about 1 quart of oil per 3k miles.
. It is normal for some LIGHT ticking to occur in the 48L and some noticeably louder ticking on startup. The 0-ring seal between the oil pump screen and the oil pump may be cut causing aeration of the oil. The oil pressure signal.
The problem becomes more acute when you utilize 48 engines in high-mileage applications. How to Fix Chevy 48 Vortec Engine Issues Step 1. The PCV valve or any hole in the Vacuum lines will whine as RPM is increased.
The most popular models were the Chevrolet Nova SS and Corvette. Even having the Air filter box not fully seated will make a whining noise. Newer models will just have the same issues as the older ones since they dont have that 4 cylinder mode whatever the hell its called.
PCM was not purchased with the engine. Another problem common amongst a lot of the vortec engine line is lifter tick. This is a 1979 Monte Carlo with a swapped 48 V8 from a c.
If your power steering pump is low on fluid or a bad bearing is in the Alternator they will whine. However the whole cause of the problem with hydraulic lifter is oil pressure. 2 Sep 10 2012 The only time my 48 has ever ticked was when it was about a quart low on oil.
You will find that the 48 has about the same issues as the 53 because they are virtually the same engine. When the gasket is not properly installed it will allow unmetered air to leak out of the engine. The Citation introduced the X.
Everything else has held together well Sent from my LG-D800 using Tapatalk harbt95 Registered Joined Jun 1 2014 26 Posts Discussion Starter 5 Jul 17 2014 Graystone said. Hello I have a chevy express 53 awd with the check engine light on the codes is p0300 engine misfire detected. It can warp or crack over time from overheating and torque.
Lifters sit on the camshaft and are responsible for the opening and closing of the valves. The GM 48L engines lack block features available in most GM 53 engines like VVT Variable Valve Timing. We have a cammed 48 that was in a 2000 chevrolet silverado 2wd with a tbss intake and long tube headers a drive by cable pcm that was redblue plug.
The most common cause for manifold and gasket failure in a 48 Vortec is a poorly designed gasket. We pulled motor from the 2000 and installed it into a 2005 gmc sierra 4wd and had to use stock manifolds and stock 53 intake with drive by cable. Water failure can happen gradually after crossing the 150000-mile threshold.
Tech II or equivalent scanner reads the vehicle as a 2004 Chevrolet Tahoe 4x4 53 V8. Anyways the logistics of how they work are irrelevant for this problem. 2007 chevy silveraol 48 engine for 4 years have had problem with vehicle not starting after not being used 2 o4 days have tried 2 new battries plus an utlium batteryive spent.
Engine swap problem with 48. 2007 chevy silveraol 48 engine for 4 years have had problem with vehicle not starting after not being used 2 o4 days - Answered by a verified Chevy Mechanic. Ive got a 2000 48 with 325k original miles.
By MD Chevy August 11 2010 in 1999-2013 Silverado Sierra 1500. The GM 62 engines are the most advanced with features missing in the 48 and 53 like dry sump oil systems and hybrid portdirect injection. Engine starts and runs but doesnt idle well and makes very little power at low RPM it can barely go up a steep hill without a running.
Thus lowering oil pressure causing the tick. Power hesitation is the first problem that shows but usually the engine isnt being problematic here. Engine making whining noise There are a couple of things to check.
A cracked manifold can also cause an overly rich air-to-fuel ratio. They were not the only ones to experience problems as GM also recalled many of these vehicles for safety reasons. The lifter pushes the pushrod into the rocker arms which is what then forces the valve open.
If there are oil pressure gauge problems you have to focus on two different things.