Question about 1989 Chevrolet K1500

1 Answer

I have a 1989 chev.k2500 and it runs too lean

I have changed the EGR valve and change the spark plugs and the master computer, could it be the throddle bodies. I also changed the pvc valve, and the temp sensor. the o2 sensor is still new.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,450 Answers

Most likely cause would be a vacuum leak somewhere. spray some carb cleaner around intake WHILE ENGINE IS COOL!!! and see if you notice a rpm change

Posted on Dec 08, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

What are the probable causes of DTCs P0400, P0171, P0174 y P0302?


DTC code PO400 could be caused by a clogged EGR valve or EGR tube. try cleaning the EGR valve, tube
DTC code PO171 is fuel system too lean bank 1
DTC code PO174 is fuel system too lean Bank 2
Most likely suspects are O2 sensors, But can be caused by vacuum leaks and also can be Mass airflow sensor (MAF) try cleaning with electrical parts cleaner
DTC code PO 302 is a misfire at cylinder # 2
Check spark plugs and wires
Try cleaning the EGR Valve first along with changing the spark plug first, and see if any codes erase, in other words start with the cheaper fixes first, as some problems can be causing the other other codes

Sep 18, 2015 | Cars & Trucks

2 Answers

Rough idle chevy 350


Have you checked/replaced the O2 sensor(s). They produce the data that your computer reads. Bad/clogged O2 sensors will trick the ECU into running lean/rich.

Aug 23, 2014 | 1990 Chevrolet C1500

1 Answer

Rough idle chevy 350


have you check converter clug and o2 sensor
vacuum leak check leak with w40 or else
rotor,cap.quality of fuel
hope it helps

Aug 23, 2014 | 1990 Chevrolet K1500

1 Answer

1989 chevy blazer full size rough idle


Check the CO/Temp sensor in the exhaust manifold. It may tell the ECU that the engine is hot when it is cold or cold when hot, getting the mixture wrong.

Mar 25, 2014 | 1990 Chevrolet K2500

1 Answer

97 ford expedition cutting off at idle . it was skipping and hesitating under strain . had it checked by a computer and it said egr valve and number 6 cylinder misfire . i changed egr valve , plugs, wires...


pull wire off # 2 see if idle changes if not there s no spark... test coil....test all vacuum lines for leaks also. if all good then idle speed sensor.

Mar 20, 2011 | 1997 Ford Expedition

1 Answer

Recently had all plugs and EGR Valve changed.


firewall

4 - 8

3 - 7

2 - 6

1 - 5

front

The spark plug firing order is 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 Make sure the coil is good.

Jul 21, 2010 | 2000 Ford Expedition

1 Answer

I have a 1999 oldsmobile intrigue that is misting a lot. It idels rough, and runs rough. I can still take off it is a little slow, but I can still go pretty fast, but it still mist at the high speeds...


fuel pressure regulator on the fuel rail is probably it or the egr valve is stuck open allowing burnt fuel to flood the intake, im leaning towards the fuel pressure regulator because the o2sensor is probably reading rich or if its reading lean then i would choose the egr valve . good luck

Jul 06, 2008 | 1999 Oldsmobile Intrigue

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

64 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...