Service Engine Soon Light and Rough Idle (Below 1200 rpms)

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Question about 1995 Chevrolet Blazer

Service Engine Soon Light and Rough Idle (Below 1200 rpms)

My 1995 Chevrolet Blazer 4.3 Vortec has had this problem for the past couple of months. I have replaced the fuel pump, fuel filter, spider fuel injection system (CMFI), rotor button, distributor cap, wires, plugs, PCV vent, checked for vacuum leaks, checked for upper intake manifold leak, installed internal fuel lines, replaced the MAP sensors, and the problem still exists.

Can someone please help??

Anonymous Feb 12, 2009

all the same problems all the same problems

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Know if my 95 chevy blazer has a spider CPI?

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milespeed · Accepted Answer · 2008-10-07T03:55:51.7370000Z

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599 Answers

Do you get check engine codes?..have you done a leak down test and compression test to determine mechanical engine health?

Posted on Oct 07, 2008

Steven C Wilson Jan 19, 2014

I have the same problem and we are getting engine codes. The codes indicated problems with the Map sensor, TPS or EGR sensor.
Steven C Wilson Jan 19, 2014

We have done a compression test and it checked out fine. I am not sure what a 'leak down test' is.

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Service Engine Soon Light and Rough Idle (Below 1200 rpms)

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milespeed

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Related Questions:

Our fuel pump stopped working on our 98 Chevy Blazer V6 4.3L Vortec Engine, so we bought a new one. A couple days later (before replacing the fuel pump) it started up and ran but ran crappy. So we did

Got a 92 S10 Blazer 4.3 Vortec with CPI. will start with priming but wont stay running. Replaced pump (x2), filter, spider (x3). Third spider got it started and ran ok for 20 minutes. Shut off to cool down...

1995 s-10 blazer 4.3 vortec wont start. have 57 psi at intake. wont fire with eather, new gm spider. advance auto fuel pump. filter.

95 blazer not getting fuel new tank,sending unit/pump, relay. has 4.3l cpi vortec engine

95 chevy blazer vortec 4.3 changed fuel pump 2 days later it started to bog and sputter when giving gas change fuel regulator dont see any leaks or spray from the spider or the in lines they were replaced...

Know if my 95 chevy blazer has a spider CPI?

1998 blazer will not start

93 CHEV 4.3 VORTEC. CHANGED SENDING UNIT & PUMP HOWEVER ONLY HAVE 32-40 LB AT GUAGE NOT ENOUGH TO START? OR POSSIBLE INJECTOR PROB??? SPIDER INJECTORS WERE REPLACED 2YRS AGO AND ONLY HAVE 1 MILE ON...

In a 4.3 vortec 1995 s-10 blazer, could the crank sensor be the cause of injectors not opening? i have replaced the fuel pump (65 psi), filter, spider assembly, and ignition control module. i am getting...

95 blazer with vortec spark is fine fuel is not

Not finding what you are looking for?

1995 Blazer

Our fuel pump stopped working on our 98 Chevy Blazer V6 4.3L Vortec Engine, so we bought a new one. A couple days later (before replacing the fuel pump) it started up and ran but ran crappy. So we did

Open Questions:

1995 Chevrolet Blazer LT 4WD 4 door, How do I know which ABS module I have? options do not list option K29, anti lock break light is on when you begin to drive, garage says it the ABS Control module?

Serpentine belt diagram for a1995 Chevy blazer 4.3 6cylinder automatic without ac

vacuum for 95 blaze 4.3

i need the diagram for vacuum lines on a 1995 chevy blazer 4.3

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Service Engine Soon Light and Rough Idle (Below 1200 rpms)

1 Answer

milespeed

1 Suggested Answer

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

Our fuel pump stopped working on our 98 Chevy Blazer V6 4.3L Vortec Engine, so we bought a new one. A couple days later (before replacing the fuel pump) it started up and ran but ran crappy. So we did

Got a 92 S10 Blazer 4.3 Vortec with CPI. will start with priming but wont stay running. Replaced pump (x2), filter, spider (x3). Third spider got it started and ran ok for 20 minutes. Shut off to cool down...

1995 s-10 blazer 4.3 vortec wont start. have 57 psi at intake. wont fire with eather, new gm spider. advance auto fuel pump. filter.

95 blazer not getting fuel new tank,sending unit/pump, relay. has 4.3l cpi vortec engine

95 chevy blazer vortec 4.3 changed fuel pump 2 days later it started to bog and sputter when giving gas change fuel regulator dont see any leaks or spray from the spider or the in lines they were replaced...

Know if my 95 chevy blazer has a spider CPI?

1998 blazer will not start

93 CHEV 4.3 VORTEC. CHANGED SENDING UNIT & PUMP HOWEVER ONLY HAVE 32-40 LB AT GUAGE NOT ENOUGH TO START? OR POSSIBLE INJECTOR PROB??? SPIDER INJECTORS WERE REPLACED 2YRS AGO AND ONLY HAVE 1 MILE ON...

In a 4.3 vortec 1995 s-10 blazer, could the crank sensor be the cause of injectors not opening? i have replaced the fuel pump (65 psi), filter, spider assembly, and ignition control module. i am getting...

95 blazer with vortec spark is fine fuel is not

Not finding what you are looking for?

1995 Blazer

Our fuel pump stopped working on our 98 Chevy Blazer V6 4.3L Vortec Engine, so we bought a new one. A couple days later (before replacing the fuel pump) it started up and ran but ran crappy. So we did

Open Questions:

1995 Chevrolet Blazer LT 4WD 4 door, How do I know which ABS module I have? options do not list option K29, anti lock break light is on when you begin to drive, garage says it the ABS Control module?

Serpentine belt diagram for a1995 Chevy blazer 4.3 6cylinder automatic without ac

vacuum for 95 blaze 4.3

i need the diagram for vacuum lines on a 1995 chevy blazer 4.3

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