Question about 1990 Geo Tracker

1 Answer

1990 tracker idles high all the time unplug map sensor on fire wall it idles down but runs sigh smokes

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 32 Answers

Check for vacuum leaks. this can be done by waving a gas torch (propane) near the intake piping between the throttle body and the intake manifold with the engine running.

Posted on Oct 06, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Why is the engine running erratically?


the map sensor fail means (DTC code not stated sadly)
mean the voltage is stuck at 5v or 0v.
near
the ECU never lies about this, ever.
the ECU enters FAILSAFE mode , in this case. (limphome)
and runs rich has heck , horrid rich, misfires.
RPM limited
idle controls disabled.
and retarded spark timing.

pretty much worst of the worst for EFI ops.
all you need to do is post the DTC error. and all that is what matters.
new MAP time, or fix the vacuum hose. its clogged? cracked.
make sure the vacuum leaves the intake manifold (sucks) and
makes it all the way to the MAP on the fire wall and that the
tiny filter(check valve?) inline is clogged, (blown through it)

This is a G16A ENGINE, With an ECU that does not create or control spark, (old style distributor with mech, and vac, advance)

DTC 31 or 32??????????????????????
http://www.fixkick.com/CEL/CEL.html#OBD1codes

if vacuum line is breached to map , the vacuum is not 0" HG
the MAP outputs 3.9V

the ECU trip points i do not know. but
above 3.9 or below .5v it will trip... somewhere,

here is very good map , graph

http://www.fixkick.com/sensors/my-map.html


all testing of it is here
http://www.fixkick.com/sensors/tests/MAP-testing.html

with photos and how to back probe it with an volt meter.

Apr 29, 2015 | 1990 Geo Tracker

1 Answer

Idle problems


The F 150 depending on the engine has a MAP sensor if the sensor vacuum get disconnected or even if the sensor fails the result is black smoke.RPM jumnping up and down look for a vaccum hose that is disconnected or broken.

Mar 01, 2012 | 1990 Ford F150

1 Answer

1988 gmc 5.7l engine, changed, iac motor, map sensor, fuel press. regulator, fuel pump, fuel filter, timing gear and chain, distributor, has no cat. converter , yet still cranks a long time before...


i have the same exact problem, i have replaced fuel injectors, idle position sensor, idle air sensor, map sensor, temperature sensor,. the only way i can make mine run ok. not great is unpluging the map electrical connector, and it still has no power if u gas on it but it makes it down the road and smells rich, if u find out let me know what the problem was i really love my truck and hate that it doesnt run right, Redemmett21@aol.com

Jan 12, 2011 | 1988 GMC C1500

1 Answer

I have a 1990 Tracker. When cold it idles very high, 2300 RPM, then goes to a surging idle as it warms up< 1400 to 2000RPM, then after it is warm it idles nicely. How do I reduce the idle when cold...


sounds like the idle air control sensor is bad or it could be the idle speed control sensor(module) both can be found on the throttlebody. but to be sure you can take the car to auto-zone and they will run a free diagnostic even if you dont have a check engine light there still may be a code stored.

Aug 22, 2010 | 1998 Chevrolet Tracker

1 Answer

1991 302 runs like it is chocking out, I have changed the fuel filter, plugs wires rotor cap, and map censor, runs rough and worse when in gear, eating gas..help please? The truck is a 1991 f150 NITE 4x4


is it idling high and you put it i gear it runs rougher and smoke black check your coolant sensor also connection or sensor itself and fuel pressure if high check for return line blockage also vacuum leaks make sure you have the right vacuum going to your map sensor you need to check right vaccum at idle going to your map sensor/

Jan 19, 2010 | 1991 Ford F150

1 Answer

Trouble shoot truck performance at times too accelerated and at time running too adle and black smoke comes out of the tailpipe


Check for bad MAP sensor, or bad MAF sensor. could be a vacuum leak somewhere with the idle being high.

Jun 15, 2009 | 1993 Mazda B-Series

1 Answer

1994 Geo Tracker 4x4 Automatic


it is probably out of water as mine did that and the radiator was dry. due to a bad water pump.

Nov 02, 2008 | 1992 Geo Tracker

1 Answer

Map sensor


that is not a map sensor(mass air flow) it is a barometric switch also know as a mps(manifold pressure sensor) if your vehicle idles fine but when you try to accelarate. i have a question? is it a throttle body or a carburator type fuel system?

Aug 24, 2008 | 1990 Ford F150

Not finding what you are looking for?
1990 Geo Tracker Logo

Related Topics:

456 people viewed this question

Ask a Question

Usually answered in minutes!

Top Geo Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8140 Answers

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

Answer questions

Manuals & User Guides

Loading...