97 Blazer HELP!

afelix9137 · #1 02-20-2005, 09:38 AM

Blazer has 158,000 miles. oil changes every 3,000 miles. Blazer runs good except when going uphill. SES light blinks then stays on, can't go more than 10-15 mph uphill. SES goes off after couple cycles of new gas. Had ignition switch replaced. Had tune-up. Had PCV valve replaced. Had oxygen sensor placed. Had injector service.
Codes found were P0300, P0151. Any ideas on what to do next? Don't say trade in.

BlazerLT · #2 02-20-2005, 10:31 AM

Clean your MAF sensor with TN cleaner and a gentle toothbrush and get the black crud off of the two small sensor wires. BE GENTLE!

Check fuel pressure?

Did you replace the fuel filter?

blazee · #3 02-20-2005, 11:22 AM

P0151 = HO2S Circuit Low Voltage Bank 2 Sensor 1

BlazerLT · #4 02-20-2005, 02:17 PM

Yes, but the MAF sensor if dirty will cause O2 sensor codes as well.

blazee · #5 02-20-2005, 02:21 PM

I was only stating the code for those attempting to help. When I tried to look it up in my Haynes manual, it wasn't in there. I had to do a web search to find it.

BlazerLT · #6 02-20-2005, 02:24 PM

Quote:

Originally Posted by blazee

I was only stating the code for those attempting to help. When I tried to look it up in my Haynes manual, it wasn't in there. I had to do a web search to find it.

Oh, ok , I see. No prob. Was just letting him know before he swapped it out and found that it didn't fix the problem.

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