Question about 1991 Volvo 740

1 Answer

1991 volvo turbo idles fine runs ok but the exhaust manifold gets glowing hot after highway speeds. help

Posted by on

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
  • 98 Answers

Please stop driving you will ruin your motor.the problem you are having is a vacum leak. and that is causing your engine to run very lean.

Posted on Mar 11, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

One side of the turbocharger become red-hot


it is common for turbo to glow under normal use at a high idle its caused by extra fue lgoing to exhaust

Jul 07, 2015 | Cars & Trucks

2 Answers

MY 1991 740 TURBO SEEMS TO BE CLOGGED


I think turbo must be repaired or replaced.

May 29, 2008 | 1991 Volvo 740

1 Answer

Loses power after running awhile


do a compression test on the exhaust when hot use a rag and cover the exhaust and listen for hissing sounds. if you hear some then you have a leak and not getting the right back pressure from the engine. you will lose speed and use more fuel. also check the manifold you may need some to listen to this wile covering up the exhaust. if all fine then check the egr valve and check the breather pipes on the engine make sure they not blocked.

Dec 02, 2013 | 2003 Oldsmobile Bravada

1 Answer

Exhaust manifold and pipe glowing red hot hyundai accent 97


Exhaust Glowing Red Hot

Start over--you do not have the timing
belt on correctly

Dec 06, 2012 | 1997 Hyundai Accent

2 Answers

Does my 2002 S80 Volvo have turbo or not?


is this a t6? if so yes. turbocharged engines have more horsepower than naturally asprirated engines, a turbo charger works like a supercharger by forcing more air into the intake, while a super charger is usually belt driven a turbocharger is exhaust driven, it will be located in the exhaust pipe or exhaust manifold and is turned by exhaust gases passing thu with the opposite side connected to the air intake pipeing, some have the intake air piped thru a intercooler which is mounted in front of the radiator(cooler air is more horsepower)
type 2002 s80 volvo in your search bar and you can find a ton of info

Nov 11, 2009 | 2000 Volvo S80

1 Answer

91 volvo stalls at anytime


TRY ANOTHER FUEL PUMP AND FUEL FILTHER THESE PUMPS ARE FUNNY ON VOLVOS HAD SAME PROBLEM ON 850 TURBO AND SURE ENOUGG IT WAS THE PUMP

Apr 11, 2009 | 1991 Volvo 940

1 Answer

1991 volvo turbo idles and runs ok exhaust manifold gets glowing hot after highway speeds checked and repaired all vacuum leaks had replaced air mass unit before this happened. timing by the book 12...


The Garrett turbo-charger is notorious for leaking oil into the intercooler, and, into the emissions system. This happens because the bearing wears in the turbine assembly, and dumps lubricating/cooling oil into the combustion and intercooler system. It also ruins all of the rubber hoses that come in contact with the oil.

A result of this, after thousands of miles of driving: Your catalytic converter is clogged. The backpressure from the clogged exhaust increases the manifold temperature to cherry hot!

When I had my Volvo service and sales business, I lost money on only one Volvo; a turbo-charged 1988 wagon! A friend of mine who made his living salvaging Volvos had similar experiences with turbo-charged 240's and 740's. I hate to break the news to you my friend, but you will need to spend lots of money on that vehicle.

Trust me, do not try to fix it as it's a black hole---$700-900 for the rebuilt turbo ($250 for the rebuild kit), $200-300 for the catalytic converter and on and on! When I bought that vehicle from the original owner, It had a stack of repair receipts an inch thick!

The only recommendation, if you must keep and drive the car: remove the turbo-charger, intercooler, and all attendant hoses. Replace the air assembly with one from a normally aspirated B230F, and keep the airmass you just installed. Replace the catalytic converter with a good used one if you can find it.

Mar 25, 2009 | 1991 Volvo 740

1 Answer

Toyota mr2 1991


The catylitic converter is clogged. It needs replaced on it will be fine.

Mar 12, 2009 | 1991 Toyota MR2

5 Answers

940 GL Stall problem


crank sensor problem

Jun 16, 2008 | 1992 Volvo 940

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

Related Topics:

171 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volvo Experts

yadayada
yadayada

Level 3 Expert

60792 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 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...