blazer low power code P0101 - Engine Troubleshooting


	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair

Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:
  Login
  Sign up here!

Latest Forum Post

Lukewarm Heat............

New antifreeze reverse flush heater core...

multiple warning lights

2013 GMC Terrain 130,000 miles 4 cylinde...

2014 Nissan Sentra Shaking

Car recently started shaking when accele...

Buy Flualprazolam Powder Online Whatsapp: +1(424) 328-1086

N/A

1989 toyota pickup 3.0 crank no start

I have a 1989 toyota pickup 3.0 crank no...

Strut spring orientation and strut mount tension nut

2017 Nissan rogue awd 2.5 L Put in Monro...

Transmission stuck in part, I have tried everything

So I'm working on my elderly fathers 201...

2017 dodge journey LED headlights on/off randomly

Year of vehicle 2017 Make of vehicle dod...

Kia Soul starter replacement issues!

Okay so my car is a 2010 Kia soul 2.0 en...

Please Help - Knock sound & engine fail

Hi all, Hoping to get some insight and ...

blazer low power code P0101

Sign up here!

Search for (search options)

Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

autojoe
User

Dec 26, 2010, 3:44 PM

Post #1 of 3 (8694 views)

blazer low power code P0101	Sign In

chevy blazer 4.3L 1999 code P0101 replaced maf still same problem.......low power under load and if go up steep hills bogs down and bucks and goes real slow.scan tool shows 2,000hz idle and 4,000hz under load.volts will show .67 idle and up to 7-8 volts under load.If unplug maf runs better and shifts better but still problem going up steep hills but better on flats.any ideas would be appreciated.all scan tool info I have relates to gps but scan tool only shows volts and frequency.Maybe defective maf?

Sidom
Veteran / Moderator
Sidom profile image

Dec 26, 2010, 6:25 PM

Post #2 of 3 (8686 views)

Re: blazer low power code P0101	Sign In

Check your vacuum and idle and high rpm. If possible check your backpressure. I've seen restricted exhaust systems give funky MAF readings before.

It's possible to get a bad MAF, sure wouldn't be the 1st time, frequency is probably the best way to test a MAF (that & fuel trims) but I'm more familiar with gps. What can I say.....old phart, old school........

What type of scan tool are you using? I know what type of scope you have.....

autojoe
User

Dec 26, 2010, 7:58 PM

Post #3 of 3 (8681 views)

Re: blazer low power code P0101	Sign In

it responds fast at snap throttle.The check engine light went out before test drive.I have a autoenginuity pc base scan tool.My old snap on did gps.It is listed in my alldata at gps.Also was looking at map but not listed on scan data because vcm uses map to see if maf is working.Maybe map is defective.....have to manually test with vacuum pump and voltmeter.maybe hook up a fuel pressure gauge and take for a test ride.

Search for (options) Privacy Sitemap