1989 VOLVO 740 GLE NEED HELP

BARRYALLEN50 · Post by **BARRYALLEN50** » 02 Nov 2007, 20:54

100.000 MILES CAR JUST STOPS. REPLACED PLUG, WIRES, BOTH FUEL PUMPS AND FILTER. NOT THE PROBLEM. RUNS GREAT TILL IT WARMS UP THEN JUST STOPS LIKE NO SPARK MAYBE. THEN SOMETIMES HARD TO RESTART. BUT IT WILL EVENUTALLY START BACK UP. WILL BE DRIVING DOWN THE STREET AND IT JUST CUTS OUT AND SOMETIMES WILL RESTART ON ITS OWN JUST ROLLING TO A STOP. NEED HELP IM NOT GOOD AT EXPLAINING THIS. IF YOU HAVE ?S I WILL TRY TO ANSWER. REPLACE THE FUEL RELAY. SORRY ABOUT THE CAPS. STUCK KEYS

wojeepster · Post by **wojeepster** » 05 Nov 2007, 15:44

fuel pump relay, or hall pickup in distributor,

lovk262 · Post by **lovk262** » 15 Sep 2009, 19:36

I am having the same problem with my 1990 240DL; starts and then quits suddenly without warning after running very briefly. If i wait 10-20 minutes it usually restarts. It was happening about 2x/week while in my driveway, until it recently happened while driving about 40mph and wouldn't start again. No engine noise or warning, just suddenly didn't have any power and realized the car had quit. It did seem like it either did not have gas or air.
There is no engine noise or action when I tried to restart it.
I brought it to the garage, had it towed and they could not duplicate the problem.
But they had a very hard time making the diagnosis of what was wrong. So not quite sure all they recommended is needed.
They did not have a definitive answer on which part is actually causing the problem. They told me the current parts are old and should be replaced as the ECM is original and others are very old.
The garage is recommending a new electronic control module, fuel pump relay, crank sensor, knock sensor (check engine light is also on) and I'm thinking it might be a good idea to replace the neutral safety switch too (as viewed on forum).
It seems like because they are not sure, they believe changing out these parts are the most likely fix.
Any suggestions?
I replaced the O2 sensor, battery, and catalytic converter in last 3 mos. Thanks any help is certainly appreciated.
Trying to avoid buying new.

jessie240dl · Post by **jessie240dl** » 24 Jan 2010, 12:50

Hey did you ever get this figured out? I have a 1990 240 dl- same problem thinking about switching or clearing the brain and checking the fuel pump relay-any advise on that?

Post by **billofdurham** » 24 Jan 2010, 15:26

Have you checked for any fault codes that may have been set?

I don't think "resetting the brain" will achieve much.

It could well be a fuel pump relay. Can you hear the pumps kick in when you first switch on? The in-tank pump can be heard easier if you remove the filler cap and have someone else switch on the ignition with your ear next to the hole. The main pump can be felt running using another person to switch on. In both cases the run should be momentary as you aren't burning any fuel.

Bill.

talbott357 · Post by **talbott357** » 25 Jan 2010, 20:59

Check the power stage module, sometimes they flake out, and you lose ignition. Another thing to check is the plug on the coolant sensor, the metal connectors inside the plug pull out a little losing contact with the sensor. This sensor is the second one back, under the intake, towards the firewall end of the engine. Also, check your battery cables, especially the grounds, any corrosion will cause problems like this.