I recently bought a 1998 GMC Seira with over 211,000 miles on it. On the way home I noticed that the oil pressure was low when I stopped for red lights. Can this mean anything other that a bad oil pump?
View 19 RepliesMy 2002 GMC Sierra, when the AC is on, occasionally makes a sound like pressure escaping from an air tank. Sometimes it doesn't do it at all, like when I take it to the dealer to get fixed, and other times it does it every 30 seconds or so. It's worse in hot weather, but I've had it do it in the winter when the Defrost (and AC) is on. It sounds like an Air Compressor that has a broken regulator and builds up too much pressure and releases the pressure. The sound only lasts for about 1/2 a second, but it's fairly loud. It's coming from under the hood, because it is very loud when driving slow with the windows down. It will do it at all speeds, and is very annoying. We're planning on taking this truck to the Grand Canyon this summer, so I'm hoping to figure it out. My wife says we should just buy a new truck.
View 5 RepliesJust bought a new 2011 gmc sierra 1500. I am getting a vibration at 40 to 60 mph. Brought truck back to the dealership at 400 miles and they re-balanced all 4 tires. Didn't work. The second time back they had the car for a week and told me they sent the tires out to be road forced balanced that this should take care of the problem. I now have the truck back and it is vibrating even worst than before. There are 20 inch tires and rims on the truck. The truck now has 1400 miles on it. What could be going on?
View 7 RepliesThis one should be easy but I feel the need to check. Lately the brakes on my GMC sierra pick up truck has been sticking. Not badly but ever so little. Seems to happen most when it has been parked and when i put it into drive it doesn't move. If I let it sit there for a moment the brakes release and it does just fine after that. If I hit the gas and go I get the same result. what do you think? Calipers??
View 12 RepliesMy 2000 GMC Sierra truck is in great shape at 150,000+ miles with one exception. Road noise has become so loud that my wife and I have to practically shout to carry on a conversation at speeds above 40-45 MPH. Is there an after-market fix to improve the situation?
View 8 RepliesI have an '02 GMC,Sierra,4.8 L 5-speed,once upon a time this truck would easily travel over 500 miles on a full tank of fuel, for the first 10 years ,on a road trip ( which I do every summer), approx.,210 miles one way, this truck would still have just over 1/2 tank of fuel, as of the summer of 2012, the thing used up to 3/4's of a tank.
Then the service engine light came on, I replaced all sensors, O2's new injectors, motorvac, new plugs ,wires etc,( All done by a certified ASE mechanic). After his work the truck got back up to the aforementioned "good mileage", and the Service engine light went out...for awhile, now it is on again, as mentioned earlier, the truck has basically had a complete tune-up. So whats up with this ?? I sure hope I don't need to R/R the engine itself....
I recently had my ignition cylinder replaced at the dealer. Immediately after this repair, I noticed that several lights were out - lower left radio, lower left dashboard, lower left steering wheel control, some light controls, and drivers side daytime running light. I brought it back to the dealer, and they told me that it was a coincidence that all these bulbs burned out at once (and all on the lower left side) and is not related to their repair. I'm not convinced.
View 2 RepliesI have a 2006 GMC 1500 4x4 just under 100,000 miles on a GM crate engine, 266,000 on truck, runs great no loss of power, no drop in MPG. sill get 17-18 around town on 87. If I put 90-91 gas in when pulling a load I get 18 all day long. So were is the problem? I am getting spark knock. I have tried diffrent gas, just put in plugs and wires. Old plugs looked good. No Cel on, No codes. It happens when I am flat roads and going up hills. I did get to go away for 1 tank when I switched gas stations,but now all brands of gas do it. This has been going for 3 mo's. One more thing it all started after I made a 800 mile round trip puling a trailer ( just under 5000 lbs on trailer 2 axle enclosed). On that trip as always do I used 90-91 gas.
View 3 Replies2007 GMC Sierra 1500 (MAX) ... This had happened before 3x, but was about to turn truck off and wait 10 second and turn back on. Then truck would run fine for months. I found this on my truck manual.
My truck is riding differently. Here's the story - I put new tires on Friday, an hour later, my truck started to ride rough. The light on dashboard is; Check engine, Engine power lost (truck would not get up when this was shown on dash. This error has not come up again), stibilitrac check. Truck's driving performance; Idle sputters (like RPM rising, but they are not, it’s just the engine shaking), once driving when it shifts hard at 3000 RPMs (only 2nd gear). I took my truck to Advance, and this was the error code I received; #6 Cylinder Misfiring and Actuator module.
I changed all spark plugs and number #6 was very dirty compared to the other and smelt very much so like gas. I have not driven this truck only cracked and it stayed in park. I had a person look at it, and he said that the #6 cylinder was the only problem he could find when he hooked up his code thingy. Now he played with everything and took out the #6 spark plug (this is now Tues) and said that it didn't smell of gas like it should have. At the end. he stated that we first should change the Injector for #6. and if that did not correct the problem, then he would recommend the lifters to be replaced. I asked how confident he was about "his" diagnosis. and he stated.... I am not a GM mechanic... wow. now I am confused as to what I should really do! BTW, he never cleared the error codes...
1998 chevy vortec 350. replaced fuel pump(twice),fuel filter, blew air through the lines, replaced fuel pressure regulator. Getting correct voltage at pump. pump runs. still only get 30 lbs of pressure. Need 60. Thought I bought a defective pump took it back. Same result. Doesnt leak anywhere I can find. Pressure doesn't drop. Just plain don't get the 60 lbs it requires. New battery as well and new F.P. relay.
View 6 RepliesI have a 1998 Plymouth Grand Voyager SE. It has 122000 mi. I just bought it a few months ago and have came across a few minor problems and all have been easy DIY projects (couple of blown fuses, wiper replacement etc..) Recently, I noticed the AC stopped working (it was only tested once when I bought it, but have not used it since)
Where to begin the diagnosis. Is there a fuse connected to the functioning of the AC? I really don't know a whole lot about cars, but I am pretty good at fixing things in general.
It sounds like oil pressure sending units are an issue for these trucks.. where is it located? 1998 dodge ram 5.2 L ...
View 4 RepliesI've got 30 lbs of fuel pressure that drops to 28 if you rev it up a bit on a 1998 ranger 4.0 with a new fuel filter. Haynes manual say it should be 56-72 lbs. Bad news is fuel pressure regulator is in the tanks with the pump. Can the regulator be swapped out or is it one assembly with the fuel pump? Is there anything I should check first?
View 4 RepliesHow do you get to the oil pressure switch on a 1998 F150 4x4? I can see it over the top of the front axle but can't find any way to get my hand in to unplug the sensor wire. Do you have to unbolt and drop the axle down a couple of inches?
View 2 RepliesOk so my dad has been using my 98 while I was fixing his 92 4.0. I had the 92 perfect and then someone pulled in front of me and totaled it out. Well now I got my 98 back and it's all messed up. Check engine is on p0171. Fuel pressure test done and it's steady 40-42 psi. I remember last year I checked it was like 68-72 psi. It hasn't been a year or two since fuel pump and strainer were replaced. Filter probably 15,000 miles ago. It's currently running good sometimes it cuts off when you start it then next time it stays running. Is this another fuel pump failure? How much longer will it last on 40 psi? The fuel lines and tank have 336,000 miles, engine maybe 150,000 and injectors have about 20,000 miles on them.
View 4 RepliesI have a 1998 Pontiac Sunfire. I keep up on her engine and have only experienced this issue one other time back in the fall or winter. Like that day, today I started the car and drove off without letting the engine warm up a little because I was in a hurry. It was fine on my way to my destination but on the way home (about 5 miles from my house) I hit a lot of traffic an pretty much caught every red light. About 1/4 of the way home, every time I stopped the car started acting like it was going to stall out. The best way to describe it, would be if cars breathed like we do and she was out of breath panting. She had no trouble accelerating and there seemed to be no problem when continuously moving, it was only when stopped. Like I said, she only did this once before on a cold night and I was stopping and going after driving without warming it. She hasn't had a tune up or new spark plugs in a long time and she's due for an oil change. My feeling is that it is fuel related? I dunno. To top it off, my dad is looking under the hood checking the fluids right now and he just informed me that someone must've hit my car because there is now a dent and scrape on the fender.
View 10 RepliesMy van had been making a screeching sound especially when it was cold. I would turn the car on to warm up and it would screech for any where from few seconds to about 1 min. when i got hotter it would only do it for a couple of seconds. the gas was low so i went ot put gas in the car and after i was driving it on the highway and it cut off on me. first the tow guy said it was the fuel pump or filter or strainer but it was one of those. I had it towed to my house and a mechanic friend said it was the t-belt not the fuel pump. i just want to know what could it be . I have a 1998 mercury villager with about 170,000 miles...
View 3 RepliesMy '98 4.0L Explorer Sport will begin to overheat if I'm in stopped traffic for more than 5 mins. on a hot day with the A/C on. I can correct it by turning off the A/C. Would a different thermostat work? If so, what temperature do I need?
View 5 Replies1998 Buick Regal has strange readings on the gauges. 80-85 degree ambient air temp, low pressure is 60, high is 125. I have 100 lbs of static pressure in the system with the engine off. I am getting some cool air, but I would expect that the high side pressure is not high enough to cool well. Do I have a plugged orifice tube? Is my compressor not compressing enough? Or is my refrigerant low and causing the problems somehow?
View 13 RepliesI've got a '98 F150.throwing codd 402, excessive flow EGR, also the oil pressure drops to absolute zero only when gear shifts but comes right back up. No knocking or other distress sounds in engine. I know I'm in need of an oil change. I already searched a bit and decided to swap out the DPFE sensor which I did purchase from the dealership. No code as of yet but what could that pressure drop be? Could a simple il change and filter fix that?
View 3 RepliesI was driving home last night and when I stopped at a light in town, I notice the oil pressure dropped and the light came on. So I pulled over and put in park to check my oil. As I put in park the pressure went back up. I dropped it back into gear and it went back down. What could be causing this? I check my oil and it was full. I also notice when I put it in gear and speed up the pressure goes back up and stays there till I slow down again.
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