Question about 1989 Chevrolet Suburban

1 Answer

1989 Chevrolet Suburban Problem

I can not keep my suburban running , it will not start at all with the vaccum hose hooked up to the map sensor, but you take it off it runs ok for just a bit, but not enough to drive,

thank you for your help
frank

Posted by on

  • kankles70 Dec 21, 2008

    I have the same problem with my 89 suburban it will run fine when the MAP is disconnected from the vacuum line allowing for a major vacuum leak, but when plugged back into the MAP sensor the engine RPM would tidal from normal idle speed to almost dying out. I tried replacing the MAP sensor ($60) with no difference noted. A friend has suggested the fuel pump, but I already tested the fuel pressure to be at 10 lbs which is within specs. I was wondering if you had found out what the issue was on your suburban before I start spending money replacing more stuff. I already checked for codes, which there weren't any... My only other thoughts are possibly TPS or??? Thanks

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I've Been reading up on this problem and working on an 89 suburban with the same problem, tps, vacuum leaks, fuel pump, fuel filter, IAC, EGR, MAP Sensors are not the problem

Posted on Nov 22, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a1997 suburban 5.7 eng. hesitates and backfires on rapid acceleration.


check that your map sensor has direct (unregulated) vacuum. I don't believe that the purge solenoid can create that kind of problem.

Feb 27, 2013 | 1997 Chevrolet Suburban

1 Answer

1989 chevy surburban


i think map sensor is faulty

Jun 10, 2008 | 1989 Chevrolet Suburban

1 Answer

Where is the map sensor on a 2003 chevy Suburban with a 5.3l engine


{: ) The Manifold Absolute Pressure sensor, also called the MAP sensor can be found at the rear of the Intake Manifold. See no. 6 on the sample diagram:


wyet_helps_13.gif

Jul 23, 2011 | 2003 Chevrolet Suburban 1500

1 Answer

I have a 87 Suburban V10 I have change temp sensor, new throttle body, map sensor, spark plugs. wires, and still can't figure it out. Went to pass someone and it started flooding itself and would not stay...


Change your fuel filter. Replace the distributor cap and rotor. If you have the HEI ignition, they are really bad about burning through the igniton rotor.

Dec 19, 2010 | 1987 Chevrolet Suburban

1 Answer

Runs poorly(very Rich, stumbles) when map sensor is plugged in, but runs smoother with it unplugged...new map sensor, EGR, TPS, O2, Fuel Pump, timing is right, good vacuum at map, no vacuum leaks,


If it is fuel injected you may have a bad fuel pressure regulator. The regulator is attached to intake manifold with a vacuum hose and the bladder sometimes fails causing gas to be dumped directly into the intake manifold. Only solution is to replace the fuel pressure regulator.

Dec 10, 2010 | 1994 Chevrolet Suburban

1 Answer

Starts then shuts down


check all your vaccume hoses for leaks, cracks or if they are not connected properly. Map sensor vaccume hose will cause this if it is broken or cracked.

Jun 15, 2010 | 1989 Chevrolet Corsica

1 Answer

1989 GMC Suburban speedomeeter


Before you start taking apart your dash make sure that your vehicle speed sensor is working. It should be attached to your transmission. Hope this helps.

May 15, 2010 | 1989 Chevrolet Suburban

1 Answer

Having an idle problem...89 model suburban 5.7 liter with a throttle body...every sensor and switch has been replaced...the throttle body has been rebuilt and the fuel filter has been replaced...when it is...


Check your timing. With 5.7's from 1989 I have encountered slipping harmonic balancers, so make certain tdc is actually where your "mark" is, otherwise you'll get an incorrect setting and it'll run like ****. Depending on your mileage you may have a toasted timing chain.

Jan 24, 2010 | 1989 Chevrolet Suburban

2 Answers

1989 SUBURBAN 350CID HESITATION AT SLOW SPEED


check the catalytic converter they get clogged and dont allow the vehicle to run right

Feb 09, 2009 | 1989 Chevrolet C1500

1 Answer

Where are the map and maf sensors located on a 1990 r2500 suburban?


your vehicle has a MAPS and not a MAFS, the MAPS will be passenger side of the intake manifold, above the valve cover and mounted on a bracket


Oct 13, 2008 | 1990 Chevrolet Suburban

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

Related Topics:

590 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61168 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...