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Tiny
89BLAZERPROBLEM
  • MEMBER
  • 1989 CHEVROLET BLAZER
  • V8
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
Guess this a gimmick to get me to spend money well let me assure you wont happen I would go to the repair shop first
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Sunday, February 20th, 2011 AT 1:59 AM

7 Replies

Tiny
JDL
  • EXPERT
Don't know what your talking about? You can ask free questions, here? What's the problem? If your having a problem with tranny or 4wheel drive issue, I'm probably not the one to talk to?
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Sunday, February 20th, 2011 AT 7:27 PM
Tiny
89BLAZERPROBLEM
  • MEMBER
Sorry but I asked a valid? And since no response in a week except this one I was frustrated I did think about that you probably get quite a few? And that takes time to answer my sincere apologies if you read my other posts you will see my auto issue thanks
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Sunday, February 20th, 2011 AT 10:37 PM
Tiny
JDL
  • EXPERT
I found a post on 13th. A moderator was talking to you. I hesitate to butt in?

How long since overall tune-up? Using a gage and checking fuel pressure is part of a tune-up. Some of the national brand autostores used to loan out a fuel pressure gage. If your TBI around 10 psi. It's a start.

A coolant temp sensor can cause temp related issues. Any applicable mil codes. You can check those codes yourself, you use a jumper wire between the A & B terminals at the datalink connector, turn key just till dash lites come, no further, the mil starts flashing, you count the flashes to get the codes. Your looking for two digit codes.

Intermittent issues can be hard to track.
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Monday, February 21st, 2011 AT 4:22 PM
Tiny
89BLAZERPROBLEM
  • MEMBER
Thank you for your reaponce and you are right I just missed the reply some how the only code its showing is 02 sensor lean have been told that the air flow meter on the passenger side of tbi might be culpret. Your thoughts was told to take off and clean it with carb cleaner
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Monday, February 21st, 2011 AT 6:39 PM
Tiny
JDL
  • EXPERT
If idle issue, yes. Any electrical sensors, remove them, don't get wet. If the o2 sensor is showing lean, the computer will try to richen the mixture. If the system is intermittently trying to run overly rich or lean it will cause issues.
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Monday, February 21st, 2011 AT 7:21 PM
Tiny
89BLAZERPROBLEM
  • MEMBER
Any idea as to what would cause this issue I did notice some help by replacing coolant sensor also was wandering the person I bought this from put new injectors not re maned if they were wrong ones say for a 305 instead of 350 would this cause a prob?
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Monday, February 21st, 2011 AT 10:40 PM
Tiny
HMAC300
  • EXPERT
Get some choke cleaner and spray around the base of the TBI unit. The have a tendency to blowthe gaskets and cause lean conditions. Also on this model check the vacuum hose going to the map sensor on the firewall. As they get soft and suck together. Also check the pcv hose as they get very soft.
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Tuesday, February 22nd, 2011 AT 12:33 AM

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