96 chevy blazer problems

External Since: May 24, 2007 Posts: 1

i have a 96 blazer 4x4 with 4.3 v-6 vortec motor. the problem i have
is when it is cold it acts like it is flooded and hard to star. when
it is at normal operating temp. it will start fine. i have been told
that there is a coldstart valve problem. i have talked to diffrent
shops and they say that the injectors are in a bank of 6 injectors. i
don't know what to do. if it is the bank is it going to cost at least
800 or so to replace. can anyone help me narow this down. this is a
great truck and i dont want to junk it. but if i cant fix the problem
it is headed to junk yeard. please help any one

External Since: Jan 09, 2007 Posts: 43

You might want to check your engine coolant temp sensor. If the CTS false
reads your engine temp as high, it will send commands to the computer to cut
back on the fuel trim because it *thinks* (not exactly) that the engine is
at or above operating temperature. If you have access to a scanner or a
digital voltmeter with a resistance funtion, you should be able to test this
easily. If you want to rule out an injector problem, unplug a sensor (ECT
for example) and force the computer into limp mode. If your problem goes
away, I would test all the sensors that have authority over the fuel system
(MAP, ECT, TPS, IAC, etc). I hope this helps? I have seen this exact
problem with a failed ECT with the same cold starting symptoms on many
vehciles. Good luck. You may also want to take a fuel pressure reading and
post the results.

Andrew.

in article 1180049986.941975.179680.DeleteThis@q19g2000prn.googlegroups.com,
ltsimicich.DeleteThis@comcast.net at ltsimicich.DeleteThis@comcast.net wrote on 5/24/07 7:39 PM:

> i have a 96 blazer 4x4 with 4.3 v-6 vortec motor. the problem i have
> is when it is cold it acts like it is flooded and hard to star. when
> it is at normal operating temp. it will start fine. i have been told
> that there is a coldstart valve problem. i have talked to diffrent
> shops and they say that the injectors are in a bank of 6 injectors. i
> don't know what to do. if it is the bank is it going to cost at least
> 800 or so to replace. can anyone help me narow this down. this is a
> great truck and i dont want to junk it. but if i cant fix the problem
> it is headed to junk yeard. please help any one
>