Chevrolet - 1500 :: Oil Pressure Goes Down As The Engine Temp Increases
May 9, 2013
I have an 88 Chevy C1500. It started showing low oil pressure about a year ago and I went with a heavier oil and oil pressure go a bit better.
Just changed the oil and now, when I start the engine cold, I show normal oil pressure. As the engine temp increases, the oil pressure goes down. When engine is fully warm, oil pressure shows 0 and "check gauges" light comes on.
Decided to put even heavier oil in but guy at parts house said it was probably the sending unit, not a worn out engine. I tend to agree because I drove it more and never hear any ticking or valve noise. Too cheap to replace the sending unit.
From the symptoms above, does thus sound right? Could the sensor somehow fail as engine temperature increases? Everything I read says oil pump failure is very rare.
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I have a 2012 Crew cab Silverado 5.3 V8 with the towing package. When I pull my travel trailer (approx. 5000 lbs), the water temp stays 1/2 guage and the tranny temp is 170-190, however, on steep hills the water temp guage goes 2/3 to 3/4 guage for a short time and the tranny temp reaches 200-210 degrees. Is the elevated water and tranny temps okay or should I try to reduce them back to the normal range. What is the max temp I should keep the tranny at?
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I have a 1992 Chevy 1500 5.7L V8 with 167,000 miles that is running hot. When I drive the vehicle the temperature quickly rises to just about 250 degrees and hovers just under the "red" zone. It never fully overheats, even on longer drives (50+ miles). It seem to run just fine otherwise. It is not leaking coolant and I have not had to fill the radiator. My first thought was that the thermostat was bad, but wouldn't that be an "all or nothing" issue? Where should I start looking for the problem? It has been going on for about 3 weeks, and I want to get it resolved quickly.
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Chevy Silverado.. The display of heat, location of air flow, temperature and fan flickers and changes on its own. Sometimes it works fine and blows out nice warm air. Other times it goes out completely and I have no control over any of it. It will just blow cold air. If I turn the head lights on it sometimes makes it go out completely. I have had the relay switch changed out and that was not the problem.
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2004 1500 5.3 low oil pressure after using Lucas engine stop leak. No pressure at idle just below 40 when driving. Replace the sending unit and pressure improved for about a day. Just had a manual pressure gauge hooked up and it shows the same as cluster. No engine noise at all. I was informed that using Seafoam or another solvent could loosen up build up and cause damage. Trying to find out if using an engine flush machine may support. I am assuming that the cause of the low oil pressure is due to build up from using several qt of the stop leak over a four months. I am the only owner and I have always changed the oil according to schedule and have always used Valvoline synthetic.
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I have a 1993 Chevy C1500, and about 3 weeks ago I started noticing that whenever it gets to temp I start hearing a knocking coming from the valves, and I lose almost all oil pressure. I also lose a lot of power. What could be causing this? Am I looking at a full on engine rebuild?
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My 2000 B5 1.8t began getting the Low Oil Pressure warning light over the winter, and has gotten progressively worse. I added a mechanical oil pressure gauge and I'm seeing about 20 psi on a cold engine at idle. If I rev to ~2500 the pressure DROPS to between 5 and 10 (and triggers the STOP! light).
I tried a bottle of autoRX, but probably too late- I could only run about 200 miles before the STOP! light wouldn't allow me to get out of the driveway.
What might cause the pressure to DROP as engine speed increases? a Clogged screen or worn pump possibly? It would be nice if it was something I could correct without pulling the engine (but I'm not expecting that).
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We have a 2005 Chevy Tahoe. Been running great. Has 140,000 miles on it 80% open road. Couple of weeks ago was highway driving and noticed the coolant temp gauge went all the way down to nothing, and then back up to normal (middle of the dial) This happened 5-6 times and each time as the temp rose back to normal, the transmission would lurch.
I took it to a mechanic who could not figure out what was wrong, but acknowledged it was running terribly. He said that was what he would try before going to a dealer. I agreed and the car instantly seemed to be running perfectly. Now a couple of weeks later, the coolant temp gauge is dropping again. It is not going all the way to nothing, and the transmission is not lurching. It goes down from half to a quarter and then back again. So something still seems to be wrong. Otherwise all seems to be well.
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My 1992 Chevy truck started surging or revving up when in park. It will tac to 1000 rpm's then go back down - up and down. It won't barely drive down the road. Didn't know if this is a fuel pump problem or something more serious. We've replace several parts that were described on the internet as "could be the problem", but nothing has worked.
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1999 Chevrolet Silverado 4.3 ltr ....
I was riding along the other day at about 40 mph and my engine just DIED. No sputtering, jerking, lurching, etc.. I have a 1999 Silverado 1500 4.3.
Since then I've tried swapping the fuel filter out. When I took the old one off I did the blow test and could barely get a bit of air through it. Put in a brand new one. Still won't start. It cranks but it won't turn over. It's like it is starved for gas I suppose.
All electrical faculties are functioning seemingly normal. (Of course I have to charge the battery every time I want to try and crank it because it doesn't charge itself because IT WON'T CRANK!)
I've had to change the fuel pump twice in the past 2 years. The last time was about 5 months ago.
For the past week or two my "Change Engine Oil" light has been on even though I've had my oil changed a month ago.
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I just installed a new Sachs flywheel and clutch on my 1995 Chevy 1500 4x4. Got everything back together, filled up tranny fluid and gear oil, bled the clutch till no air came out and it still won't shift while the engine is running. I can get it into reverse with a little grinding when in 4H, but that's it. The stick moves freely when the engine is not running. Checked the master cylinder and it is moving just fine. I have checked and did not install the clutch plate facing the wrong way. Any other guesses on what I can do before I have to drop the transmission again and redo the whole install?
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I have a 2000 Ford Taurus V6 DOHC w/170K miles. When engine heats up, oil pressure light comes on, but only when RPM fall below 1500 or at idle. There is a burnt smell sometimes after driving the car. I do not see froth or coolant in the oil. Car burns a little oil, but no more than it has been for the last 50K miles. Just had oil and filter changed 300 miles ago; I was using 10W-30 but I believe the mechanic used 5W-30. (Also, if I drive more than 45 minutes, the "low coolant" light comes on-- however, the engine is not overheating, and the radiator/reservoir are full.) What part(s) I should order first? Oil pressure sensor? Oil pump? (If at all possible, I need to repair myself, as I simply cannot afford my mechanic's hourly rates right now.)
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I have a 2001 Chevy 2wheel drive 4.3 V6 Pickup with a long lasting engine knock. I use it only to haul trash and building materials, maybe once every other week. The knock is sporadic. If I take a long trip and drive on an interstate highway the following morning upon start-up the truck will knock heavily and continue to do so as long as it is running. If I take the truck for a short local trip, the following morning it will start with no knock and only start knocking after driving maybe 10 miles. If I drive only short trips, the truck will almost always start without knocking and only knock once it is fully warmed up. I purchased this vehicle from my brother who drove it this way ever since he purchased it at a salvage auction (full of dents and some damage) who put over 20,000 miles on it with this same engine knock.
Other than the dents, the truck is in great shape, no rust, and has 118,000 miles on it. I would like to keep this thing because it was very cheap and I only use it sporadically. So, I'd like to know if I'm going to eventually have to put a motor in it or if there is some small fix I could make to stop this knocking sound. The sound: It is heavy. It sounds bad. It knocks along with the rpm of the motor. My brother, who is also a great mechanic, thinks it may be piston slap or something in the valve system. I've also had a mechanic listen to it. He thinks it's a rod bearing or wrist pin. What I don't understand is how could it be any of those things when it makes a difference how I drive it the last time it was used? Could it be something simple like a vacuum issue, knock sensor or crank sensor?
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I have a 1996 Chevy Cheyenne pickup with a fuel injected small block that has 50k miles. Earlier this summer the truck developed a problem where it is very hard to start when cold (after sitting overnight or after sitting for many hours on my flat driveway). When the engine is cold (say the first start of the day) I can only get it to start by giving small bursts of cranking power to the starter. That is, it won’t start if I hold the key in the cranking position but is more likely to start if I give it a short burst of cranking power (when I hold the key in “start” position) for a second or two.After the first start of the day, the engine runs fine and subsequent starts are quick and normal. The “Check Engine” light is not on and there are no trouble codes…. Other than hard starting there are no issues with engine performance.
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Chevy 1999 tahoe 5.7 vortec ... Car hesitates engine light reads random misfire at auto zone. Took to dealer said 10 degrees out of time on his diagnostic machine. Replaced just about every thing on engine dealer said he couldn't fix because he couldn't adjust distributor, I told him on my car that you couldn't adjust timing from distributor, who is right?
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I have a 2003 Chevy 1500HD 6.0L 4x4. I've recently started getting the "Reduced Engine Power" light along with the P1516 Fault code. I've checked all the wires going to the TAC Module, TPS, and MAP, all appear to be in good condition. The Throttle Body is clean and the "flapper moves freely with no sticking. I only have this issue when it is warm outside. Recently we've had fairly code days between 32-50 degree weather but on the few days that it has gotten warmer, I've had the issue. Since it seems to only happen when its warm, I believe it to be a moisture issue, but I'm not sure.
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I recently picked up an 05 that now has about 101k miles on it. When coming to a stop if I put my foot on the brake and hold a steady pressure the car increases the braking pressure drastically once it's under 10 mph and the car jerks you forward unless you let off of the brake. I know its because its going from using the regen to using 100% disc pressure so what can I do to fix it?
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I am driving a 2001 S10 and it recently developed a clicking noise. Whenever I accelerate, the clicking noise increases respectively. I got home and looked under the hood and saw no fraying belts or anything out of the ordinary. Also, the clicking is not there when pushing the gas while in park.
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When turning in both directions, front end makes a CHEEP-CHEEP-CHEEP-CHEEP-CHEEP sound. Frequency increases when speed increases.Brakes are NOT engaged when this happens. Goes away when coming out of turn.
I am sure the problems could be multiple, but what is your first thought? Not that it matters, but its a 2002 Chevy Trailblazer.
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Cold start ok . Problem arises after engine is at operating temp. After stopping for whatever and attempting to restart, dash no longer lights up with key in on position but starter cranks and engine won't start. Leave key in on position for about a min.dash lights back up and engine starts.
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I have a 1969 chevy c10 pickup. One of its problems is the temperature gauge was not reading. I grounded the sender wire to the engine block to deterimine if the sender was bad, and ever since the gauge reads hot all the time, even with the ignition off. Could I have fried the gauge?
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