CHEVROLET SILVERADO ENGINE PROBLEM
1999 Chevrolet Silverado • 152,000 miles
1999 5.3 4wd auto. Engine idle fluctuates 500 rpm to 800 installed MAF ran good light stayed on for a long time then went out. In the morning wouldnt idle, was ok when warmed up then it started fluctuating agian sometimes between 500 and 1000 rpm then light came back on the code was P0104, P0174, PO102 and PO103.I replaced fuel filter, and fuel regulator. Truck does not stumble, lots of power runs great except for Idle. I disconnected the battery for 30 minutes when hooked up it was ok then next day started again so I disconnected battery again but this time, no change it started to fluctuate rihgt away. I checked for vacumn leaks the old way while engine was running I sprayed starter fluid around vacumn hoses to see if engine speed up but not much responce so I figure hoses are ok. Is it possible to check all the other sensors rather than replacing them all one by one. I am a good mechanical trouble shooter but with all these sensors Im lost. I need directions
February 13, 2013.
February 13, 2013.
Check out the related content below while we wait for the question to be answered by a professional mechanic.
When i start my truck i hear and ticking noise and it does NOT go away after it warms up or it does not go away at all. When i accelerate the ticking noise gets faster and when im ...
6 answers • 2010 Chevrolet Suburban • 143,000 miles
I have a 1999 Buick Regal with a 3.8 Series2 Vin K engine. It appears the engine has died after overheating with that GM problem of the intake manifold. I need to know what engines & ...
2 answers • 1999 Buick Regal • 125,500 miles
If i took out my 91 toyota carolla engine what other cars would it be compatible with?
4 answers • 1991 Toyota Corolla
1990 Toyota Camry mileage: 150,000. 1. The oil warning light is on. 2. There are four quarts of oil in the car. 3. The oil filter is dry. 4. The engine sounds rough. 5. There is noise ...
3 answers • 1990 Toyota Camry • 150,000 miles