1990 740 gle gas delivery problem?

[joedrt77]

Thanks, going to try to isolate the sensors.

[joedrt77]

Tried unplugging sensors, no change, could the squealing sound from the 2.4 ecu be caused by a bad ground? thanks.

[joedrt77]

Still have the ecu squealing, but after those new parts and a rsr relay and connector replace and the aux. one next to it, just used a 5 pin relay and left off 87a which is for normally closed, taped it off, which is not needed. car is not stalling anymore. would like to fix the ecu squeal but don't know how. Thanks for the help Lummert.

[joedrt77]

Odd, when I turn the heat selector all the way right, full defrost setting, the ecu squeals constantly but when it's in the other 2 or 3 positions it doesn't squeal at all and when the heater is set to off, ecu squeals, very strange.

[lummert]

Verify where the noise is coming from.

[joedrt77]

it's from the ecu.

[lummert]

One thing ecu related to the heater would be to increase idle speed when running the a/c.

[joedrt77]

Are the front bearings the non service type on these?, it has the axle nut that you hit to secure it, got it off with lots of effort, no cotter pin type nut. I took it apart and can see the bearings, the bearings that auto zone had, that was suppose to match, seem way off in size and form, for about 20 more bucks can get the whole unit, not from az of course. Not even sure if they're bad, they seem to be howling, wonder if they just need repacked, maybe someone over tightened them, not sure.

[joedrt77]

Trying to figure out which carrier bearing and support I need for it, the driveshaft is 2 inches diameter.

[lummert]

Center support bearing for 1990 740 GLE:

AZ = 109FF

Volvo 1340501 and 183265 fits models with 50.8 mm diameter driveshaft. Bearing measures 45 mm ID x 75 mm OD. 1340501 is the support. 183265 is the bearing.