240 General: - wont start

dan 244 · Dec 7th, 2011, 23:34

My dad has a 1989 240 B200, it woudnt start a couple of weeks ago, it had stood for two days, and would turn over but woudnt fire, but would ocasionaly backfire. So changed the plugs, rotor arm, and checked leads. After a few atempts at starting over three days it finally went, and was ok for about a week, but yesterday morning, he drove about 5 miles, stoped at the shop, and now it wont start again, any ideas what to check / replace.

Volvon · Dec 8th, 2011, 09:35

It could be anything Dan....... you will have to use the process of elimination.

I would be inclined to start with the ignition as it sounds like it is getting fuel, albeit unburnt. Leads can look fine and still be playing up so I would replace them as a matter of course. Have you checked the spark on each plug?

ALLOA · Dec 8th, 2011, 12:05

Start with the basics. It needs fuel and it needs a spark. If the car is fuel injected check the relay. These are notorious for failing. Can you hear the fuel pump before the engine cranks?. If you have no spark there are various possibilities depending on the model. There is an ignition amplifier which lives behind the battery on the inner wing. These are also known to fail. Get back with the exact model and even post a pic of the engine if you are unsure. You will get plenty of help on here!

Best of luck

Scott

wooble · Dec 8th, 2011, 19:05

What engine is it? if it's a B200F (electronic fuel injection) sounds like a bad crank position sensor.

dan 244 · Dec 8th, 2011, 22:44

Hi thanks for the coments, I will find the answers to the questions when I see the car tomorrow. Previously a long time ago, probably 3 years, the under car fuel pump wasn't working so as a temporary fix we wired it to work in the aux position, so it can be heard prior to trying to start the engine.

we have tested for a spark at the first plug, but not the rest.

Where is the crank sensor and dose it just unscrew, we have a donner car with a blown head gasget for spares.

wooble · Dec 8th, 2011, 23:14

It's only on the EFI engines (B200F), if your car has k-jetronic injection (B200E) it won't have it.

Either way it's located at the rear of the engine on top of the bellhousing held by one 10mm bolt. The wire to it degrades with age and causes an intermittent no spark.

dan 244 · Dec 9th, 2011, 07:04

Ok thanks I think it's a b200E but I will check.

Paul240480 · Dec 9th, 2011, 07:21

Dan, look at the air intake manifold. If it is 'flat' as someone said 'a good place for your cuppa', then it's a b200e, if it is 'banana' shaped then b200f

tannachyallen · Dec 9th, 2011, 08:06

Quote:

Originally Posted by dan 244

Ok thanks I think it's a b200E but I will check.

It will tell you on the sticker at the top of the black plastic timing cover if it hasn't peeled off.

Dave A.

dan 244 · Dec 10th, 2011, 14:06

It's a b200E

Dec 7th, 2011, 23:34	#1
dan 244 Master Member Last Online: Yesterday 23:44 Join Date: Dec 2007 Location: Norwich	wont start My dad has a 1989 240 B200, it woudnt start a couple of weeks ago, it had stood for two days, and would turn over but woudnt fire, but would ocasionaly backfire. So changed the plugs, rotor arm, and checked leads. After a few atempts at starting over three days it finally went, and was ok for about a week, but yesterday morning, he drove about 5 miles, stoped at the shop, and now it wont start again, any ideas what to check / replace.

Dec 8th, 2011, 09:35	#2
Volvon Master Member Last Online: Nov 13th, 2020 06:29 Join Date: Mar 2010 Location: The Land of Ice & Snow	It could be anything Dan....... you will have to use the process of elimination. I would be inclined to start with the ignition as it sounds like it is getting fuel, albeit unburnt. Leads can look fine and still be playing up so I would replace them as a matter of course. Have you checked the spark on each plug? __________________ 1999 V40 1.9D (D4192T2 engine) Current mileage: 211,000 miles Average MPG: 54.4

Dec 8th, 2011, 19:05	#4
wooble Stay gold baby! Last Online: Jul 24th, 2022 16:15 Join Date: May 2009 Location: Bristol	What engine is it? if it's a B200F (electronic fuel injection) sounds like a bad crank position sensor. __________________ Click to see 240 parts I want to give you money for!

Dec 8th, 2011, 23:14	#6
wooble Stay gold baby! Last Online: Jul 24th, 2022 16:15 Join Date: May 2009 Location: Bristol	It's only on the EFI engines (B200F), if your car has k-jetronic injection (B200E) it won't have it. Either way it's located at the rear of the engine on top of the bellhousing held by one 10mm bolt. The wire to it degrades with age and causes an intermittent no spark. __________________ Click to see 240 parts I want to give you money for!

Dec 9th, 2011, 07:21	#8
Paul240480 Ovlovnut Last Online: Feb 25th, 2024 08:58 Join Date: May 2006 Location: Nivillac View Photos By: Paul240480	Dan, look at the air intake manifold. If it is 'flat' as someone said 'a good place for your cuppa', then it's a b200e, if it is 'banana' shaped then b200f __________________ 2004 V70 2.4SE Auto 'The Welshmobile’ 2002 Laika Ecovip 400i ( Motorhome on an Iveco 2.8TD) http://www.gitessouthbrittany.com/ http://moncopainmonchien.jimdo.com/

Dec 8th, 2011, 12:05	#3
ALLOA Master Member Last Online: Today 14:36 Join Date: Dec 2003 Location: ALLOA	Start with the basics. It needs fuel and it needs a spark. If the car is fuel injected check the relay. These are notorious for failing. Can you hear the fuel pump before the engine cranks?. If you have no spark there are various possibilities depending on the model. There is an ignition amplifier which lives behind the battery on the inner wing. These are also known to fail. Get back with the exact model and even post a pic of the engine if you are unsure. You will get plenty of help on here! Best of luck Scott

Dec 8th, 2011, 22:44	#5
dan 244 Master Member Last Online: Yesterday 23:44 Join Date: Dec 2007 Location: Norwich	Hi thanks for the coments, I will find the answers to the questions when I see the car tomorrow. Previously a long time ago, probably 3 years, the under car fuel pump wasn't working so as a temporary fix we wired it to work in the aux position, so it can be heard prior to trying to start the engine. we have tested for a spark at the first plug, but not the rest. Where is the crank sensor and dose it just unscrew, we have a donner car with a blown head gasget for spares.

Dec 9th, 2011, 07:04	#7
dan 244 Master Member Last Online: Yesterday 23:44 Join Date: Dec 2007 Location: Norwich	Ok thanks I think it's a b200E but I will check.

Dec 10th, 2011, 14:06	#10
dan 244 Master Member Last Online: Yesterday 23:44 Join Date: Dec 2007 Location: Norwich	It's a b200E

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