1990 Volvo 740 Logo
Anonymous
Anonymous Posted on Dec 25, 2012
Answered

Floods when cold - 1990 Volvo 740

  • 1 more comment 
  • Anonymous Dec 25, 2012

    engine getting too much fuet when initial start whe 32 f or less

  • Anonymous Dec 25, 2012

    floods only on cold start 1991 regina disconnected cold start valve didnot help does not have pe valve system car runa very good after initial start if not careful car will drown in gas

  • ddd228 Dec 25, 2012

    The temp sensor that controls the cold start valve may be open circuit.hard to find it.Ground it to diagnose.Short terminals going to the sensor.Try again.Time to buy a block heater.

×

2 Answers

Sulieman

Sulieman

Level 1:

An expert who has achieved level 1.
New Friend:

An expert that has 1 follower.
Welcome Back:

Visited the website for 2 consecutive days.

  • Contributor 1 Answer
  • Posted on Feb 27, 2014
Sulieman
Contributor
Level 1:

An expert who has achieved level 1.
New Friend:

An expert that has 1 follower.
Welcome Back:

Visited the website for 2 consecutive days.

Joined: Feb 27, 2014
Answers
1
Questions
1
Helped
330
Points
1

Volvo s80 2002 fuel washer flooded

ddd228

Level 2:

An expert who has achieved level 2 by getting 100 points
All-Star:

An expert that got 10 achievements.
MVP:

An expert that got 5 achievements.
Sergeant:

An expert that has over 500 points.

  • Expert 311 Answers
  • Posted on Dec 25, 2012
ddd228
Expert
Level 2:

An expert who has achieved level 2 by getting 100 points
All-Star:

An expert that got 10 achievements.
MVP:

An expert that got 5 achievements.
Sergeant:

An expert that has over 500 points.

Joined: Nov 14, 2012
Answers
311
Questions
2
Helped
112616
Points
675

Define flooding.


  1. Black smoke out of the tail pipe?

If the fuel return line is plugged,it will flood.If the fuel pressure regulator has lost its vacuum signal ,it will flood.

If there is a large vacuum leak,the O2 will see a lean condition and cause the rich condition.gas mileage will suck,big time.

This "flooding" happens when the engine is cold? ONLY?
Be sure the air filter is not clogged and the PCV is not plugged up solid.
Also,there are a few tubes from the valve cover that vents oil vapors into the air filter housing.

During this flood mode,hold the pedal to the floor and shut the engine OFF-it should NOT keep running.(Leaky injectors)...

Do this when engine is hot and cold.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1helpful
2answers

Will not start when engine is warm sounds like it is flooded cold engine OK
Bad coolant temp sensor--makes ECU think engine is still cold so sends too long injector pulse flooding engine. Very common, and easy fix.
Read full answer
Apr 02, 2016 • Cars & Trucks
1helpful
1answer

Engine coughs and sputters and acts like its flooded on cold start.
Unlikely it's flooded, but I did have a similar problem with my car, and replacing the temperature sensor fixed it.
Read full answer
Jun 04, 2015 • Cars & Trucks
0helpful
1answer

I have a 1990 ford 4.9 straight 6 that floods out when cold.
Could be the "heat riser" isn't working properly. Also check the choke on the carb. Both are there to help with cold running. If it's injected, not carburetor, check temp sensor.
Read full answer
May 24, 2015 • Ford F-150 Cars & Trucks
0helpful
2answers

Injector sprays too much fuel after starting. Engine floods out
Suspect (potentially) either a stuck injector, or a failed/failing fuel pressure regulator. One sign of a failed fuel pressure regulator can be gas in the oil. (I suffered that side effect, along with bogging, and black smoke rich running, worsening as warmed up, turned out to be fuel pressure regulator). If the injector is loose in the throttle body, or has bad o-rings, can also cause some wonky behavior. Good luck.
Read full answer
Mar 14, 2015 • 1992 Geo Tracker
0helpful
1answer

Flooding cold start
Hello. It sounds like it needs a whole new tuneup done to it.
Read full answer
Apr 19, 2014 • Dodge Dakota Cars & Trucks
0helpful
1answer

87 bronco2 2.9v6
Most likely is the temperature sending unit/sensor. Nobody ever thinks about how it works. When engine is started, and cold, the temp sensor tells the computer to put the engine into cold start mode, putting more fuel into the engine and to a bit higher idle. Once it warms up to operating temp, said sensor tells the computer to turn off cold start mode and it stops dumping excess fuel in. If the sensor puts it in cold start mode, malfunctions and doesn't take it off cold start mode, it's still dumping excess fuel in and flooding the engine. Sometimes a re-start will reset the computer, but not always. Makes sense now, doesn't it. Find the temp sensor and replace it like you did all the others.
Read full answer
Nov 29, 2017 • Cars & Trucks
0helpful
1answer

Trys to flood on cold start
what vechicle type model and the year.older cars carb type if automatic choke not working or vacuum pull off not working carb will flood out engine.for cold start up engine need good spark and fuel.if engine flooding could have weak spark due to worn out spark plugs and wires.could have vacuum leak or bad engine coolant temperature sensor.dirty air filter.dirty fuel injectors.
Read full answer
Dec 20, 2012 • Cars & Trucks
0helpful
1answer

1992 2.0 liter 16v GTI cold start issue,can't use the gas pedal until car is @124 degree engine temp or it will die,floods,has new fuel pressure regulator,knock sensors,distrubutor,idle stablizer,
What faults codes are showing on a test of the electronic engine control module?
Read full answer
Jul 28, 2017 • 1992 Volkswagen GTI
0helpful
1answer

1989 mpv mazda does not start on cold mornings and days
I'm assuming the engine cranks with the starter but does not start and run.

check the operation of the cold start injector. This is a separate fuel injector that injects fuel into the intake manifold to help richen up the mixture for cold starts. It operates on a timer that is linked to a sensor that measures engine coolant temperature. Once warm or the timer runs out, the cold start injector is turned off. Other things to check:

Fuel pressure too high (floods engine through cold start injector), engine coolant temp sensor or intake air temp sensor is stuck at full hot (doesn't allow enough fuel for cold starts), fuel injectors are leaking (floods engine with fuel).
Read full answer
Feb 10, 2011 • 1989 Mazda MPV
1helpful
1answer

454 ci gm turns over hard backfires timing ok acts flooded
Check fuel pressure, and regulator. A leaking regulator gives a warm engine more fuel [ it does not like it] a cold motor does. same as a flooded motor. Good luck
Read full answer
Mar 17, 2009 • 1999 GMC Suburban
Not finding what you are looking for?

View Most Popular

1990 740

  • Cars & Trucks

Related Question

Will not start when engine is warm sounds like it is flooded cold engine OK

  • Cars & Trucks

Related Topics

340 views

Ask a Question

Usually answered in minutes!

Popular Questions

Timing belt replacement

Volvo 740 Cars & Trucks

Steering wheel lock stuck, key won't turn

1990 Volvo 740

Stereo wiring harness diagram

1991 Volvo 740

Fuse box for volvo 740

1990 Volvo 740

1989 volvo 740 gl CAR WON'T START -----HELP

1989 Volvo 740

Check Out the Latest Top Trucks Report!
Check Out the Latest Top Trucks Report!

View all Fixya Reports

Top Volvo Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

john h

Level 3 Expert

29494 Answers

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

Answer questions

Manuals & User Guides

PDF Manual
. 1990 740 Manual

1990 740

Loading...