94 Blazer wont start cranks but doesn't "catch"

Tiny
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  • 1994 CHEVROLET BLAZER
I have a 94 chevy blazer s10 with a 4.3 engine with 154,000 miles on it. I recently had a tune up done but it still ran rough and would stall out after driving when I would try to stop. Was told oxygen sensor was dead and was going to have it replaced but now the truck will not start. We crank the motor and at times it tries to start but wont catch completely, it did catch a couple of times but I had to press the gas pedal all the way down for it to "take off" then when I release the pedal it runs rough and finally will die. It is injected and you can smell fuel when it cranks. It is getting spark also. Also after sitting for a day or so it will usually catch and run (roughly), when I was driving it I had to keep my foot on the gas and brake to keep it running at stop lights. What can possibly going on? Where should we start to look to fix this? No codes come up when we check (except for oxygen sensor) so we are at a loss. We can also hear the feul pump when we turn key to on position. PLEASE SOMEONE HELP! THANKS in advance! :)
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Wednesday, November 7th, 2007 AT 7:16 PM

5 Replies

Tiny
SERVICE WRITER
  • EXPERT
Gentle reader,

We need more information to give any kind of an answer. What I recommend is to take it to an independent shop and get a second opinion.
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Friday, August 24th, 2007 AT 7:32 PM
Tiny
BMASTERJERRY
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Yes, but so can pep boys or goodyear or a doctor or a plumber or.

This site doesn't have an open discussion forum but I've been to plenty that have and it appears the problem may be a pay system called "flatrate".

That is where the technician is paid according to the "time" the "book" states it takes to make the repair. If he finishes sooner his pay goes up, finishes later goes down.

Want your doctor, dentist, or airplane mechanic workng like that?

EMail me if you're interested in some of these sites. I'll be glad to pass 'em on to you.
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Friday, August 24th, 2007 AT 8:13 PM
Tiny
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The problem is a lack of information.

We don't know any of the symptoms, problems, proposed solutions. What is or isn't included in the estimate. Flaterate is a problem and especially when diagnosing.

It isn't unrealistic to have an $800 proposal for a 1995 anything.

Is another site the solution? You can certainly converse back and forth right now. Getting the facts out may be of help, but IMHO I still recommend the same as my first post.
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Saturday, August 25th, 2007 AT 3:43 AM
Tiny
DR_SMITH01
  • MEMBER
I'm not sure if this is the same problem but it's a start. I had a similar problem where the coolant temp sensor failed and the computer read the temp as -40 and it would try and compensate by adding excess fuel. You could check by using a scantool and reading the coolant temp, if its 80 outside and it reads -40 then you know theres a problem, or you could just replace it (it's a cheap part). I hope this helps.
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Wednesday, November 7th, 2007 AT 7:46 PM
Tiny
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We just checked the codes again and got a 15 which according to chiltons is "open coolant sensor circuit" would this be what you are referring too?

We replaced that sensor and the truck started with no problem! We also replaced the oxygen sensor today and now it runs like a champ! THANK YOU SO VERY MUCH! :D :D
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Wednesday, November 7th, 2007 AT 7:53 PM

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