Question about 1991 Volvo 740

1 Answer

Car sometimes wont start;sometimes cuts off while idling;sometimes cuts off while riding at normal speed.

Observations:when attempting to start for the first time of the day ive noticed that the fuel pump isnt coming on when key is turned to on position.
-when driving it seems like it has run out of gas but it does sputter or anything it just goes off as if someone has killed power to the fuel pump.
-it used to restart within 10 to 15 minutes, the last few times its taken over an hour and in that time i have, attempted at various intervals,to restart each time pausing at the on position to listen for the fuel pump but it is always absent.but,finally when i try to restart,and i pause to listen for the sound of the fuel pump i hear it.......thats when the car starts.from what ive read theres a solenoid valve that acts as a backup to the wastegate on the turbocharger, and under certain conditions it "if boost pressure exceeds a specified level,then the solenoid valve stops the fuel pump circuit and the fuel supply to the injectors"

Posted by on

  • Anonymous Sep 08, 2008

    car will not start no current to fuel pump

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 102 Answers

Dont worry about boost/replace the fuel pump relay behind the fuses (white,squire,tall)

Posted on Aug 26, 2008

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:

2 Answers

1995 dodge neon cuts out during normal driving runs at full throttle


hi I assume this is a fuel injection vehicle and if so it sounds a lot like you have a throttle body problem or throttle sensor problem ,have you also checked that the fuel filter is not blocked,remove the fuel filter and blow thru it in the direction of flow and if your cheeks blow up while blowing thru the filter it is blocked or restricted -replace.
hope that helps .
Nazeer

Dec 07, 2013 | 1996 Plymouth Neon

1 Answer

Hi, 1997 monte carlo that idles, but cuts out when put in gear, or at times while driving. 3.1 engine. 184,000 mi.


I don't have an answer for you, but I do have a similar or maybe even the same issue with mine. It usually starts up fine, and idles and runs fine when first started, however a few blocks or a few miles down the road it starts to cut out on me, sometimes dying completely... throwing it into neutral and pumping the gas usually will keep it running. This has gone on for a couple of months. When it does die, It normally will restart after sitting for a few minutes. Then a couple of weeks ago it died on me (normally this happens when slowing down and coming to a stop,) and would not restart even after a 1/2 hr, I had to have it towed. I periodically attempted to start it for over a week, it would turn over, but nothing more...then someone suggested that I disconnect the auto start box...It started right up. However, it still continues to cut out when slowing or stopping unless thrown into neutral and pumping the gas. It seems to run better on the open highway, than it does in town with all the slower speed and stop n go. I bought this car used about 6 mos. ago, and considering it's age and the 135K miles on it, I don't want to put any more money into it. I just read there is a recall on this vehicle for the fuel pump and additionally the fuel assembly, I'm not sure if this would be the answer to the whole problem or not.

Dec 30, 2010 | 1997 Chevrolet Monte Carlo

1 Answer

My Subaru legacy grandwagon has started cutting out at idle speed (intermittently) & also sometimes if you go on a short errand then it wont start when you get back in the car. Engine turns over...


You could have a number of problems. First do a complete tune up, proper timing, new plugs etc.

Turn the key and do not give it gas. If it starts slowly give it gas and let me know what it does. I suspect it will cut out. In that case, you might have bad injectors. Let me know if I can be of further help

tom

Jun 20, 2010 | 1992 Subaru Legacy

3 Answers

My daughter's 2003 Mazda Tribute sometimes won't stay running. It will start but when you take your foot off the gas it stalls. She's had it towed home and then it starts right up!


if when running it runs well apart from idle problem i would suggest you have the throttle body and idle speed control valve cleaned out and add a fuel system cleaner to fuel tank also check wireing to idle speed control valve

Dec 23, 2009 | 2003 Mazda Tribute

1 Answer

High idle speed when the engine is cold


The high idle speed at start up is normal. As the engine temperature increases, the engine idle should kick down automatically. Insofar as the emissions results, if there were a problem, the check engine light should be on. If it is, take the car to an autoparts store and have the fault codes read. Most parts stores will perform the scan for free. If the check engine light is not on, and the idle question was all you were worried about, you are good to go! Hope this helped and best wishes.

Jul 31, 2009 | 2002 Toyota Camry

1 Answer

Rev counter jumps when idling and then engine cuts out


sounds like the idle speed sensor,if your rpm's are idling up and down

Feb 09, 2009 | 1999 Suzuki Vitara

3 Answers

944 turbo throttle dropout problem


I would start with the TPS, and if it doesn't solve it then the AFM would be the problem.

Nov 22, 2008 | 1986 Porsche 944

Not finding what you are looking for?
1991 Volvo 740 Logo

Related Topics:

264 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volvo Experts

yadayada
yadayada

Level 3 Expert

63801 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

Mark Jones

Level 2 Expert

76 Answers

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

Answer questions

Manuals & User Guides

Loading...