1990 Volvo 740 Logo

Related Topics:

Posted on Aug 15, 2009

We did a motor change in a 740 gl sedan and it sounds like the timings off could it be the flex plate oh and what is a flex plate

  • Anonymous May 11, 2010

    If the engine will rev up to 5 or 6 thousand RPM's without hesitation and backfiring your timing should be fine. If you removed any spark plug wires be sure that you have the order correct. If you replaced the engine as a whole, including all of the sensors you may have an engine that ran off of a different computer. Volvo 740's had 2 or three different models of engine computers. Please tell us what exactly was replaced and what wasnt replaced. Were the motors the same? (Both 8 valve, both 16 valve) Were spark plugs, timing belt, distributor replaced or swapped?

×

2 Answers

Anonymous

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Mayor:

An expert whose answer got voted for 2 times.

Problem Solver:

An expert who has answered 5 questions.

  • Contributor 7 Answers
  • Posted on Jan 16, 2010
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Mayor:

An expert whose answer got voted for 2 times.

Problem Solver:

An expert who has answered 5 questions.

Joined: Jan 16, 2010
Answers
7
Questions
0
Helped
6104
Points
8

The flex plate has a timing reluctor ring attached and two pins that must be in faze with #1 piston on the compression stroke.pin must be ~15* below horizon oposite starter.

Anonymous

Level 1:

An expert who has achieved level 1.

  • Contributor 1 Answer
  • Posted on Sep 17, 2009
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.

Joined: Sep 17, 2009
Answers
1
Questions
0
Helped
213
Points
1

A flex plate is the plate that is bolted one the back of the engine that the torque convertor bolts on to. I dont see how the flex plate would have anything to do with how the car runs. i would check the timing, plug wires, and maybe vacuum lines.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
1answer

My non turbo 88' 740 gle just started to "chug" like a smooth withdrawal of power about a 2-3 seconds worth of time, maybe 3-4 times in a row. It usually happens when the cars sets about 8 hours to...

have the flex plate for the automatic checked as it is thin and is not under stress when the brakes are off
run the fault codes to determone other sensor problems
0helpful
1answer

Can the timing be set on a 1990 volvo 740 gl

on a 1990 volvo 740 GL the timing is not adjustable, this is computer controlled.
0helpful
1answer

Need to change rear shocks on a volvo 740 gl sedan

u may have to get in trunk and there be rubber inserts in holess above the shock where they mount
0helpful
3answers

Flex plate timing 2.3 sohc at tdc

Get the car to a volvo mechanic for repair of the flex plate.
0helpful
1answer
0helpful
1answer

NOISY FLEX PLATE, KEEPS CRACKING AROUND MOUNT ING SCREWS (3) , WELDED UP CRACKS AND REPLACE SCREWS, IN A WEEK STARTS GETTING NOISY AGAIN WE HAVE WELDED THESES CRACKS 3 TIME NOW, HAVE REPLACED NEW FLEX...

sounds like it is incorrect flex plate
for bolts to keep coming loose i wouldsay the bolt threads in end of crank have been streched thru over tightening
you may be able to redrill and tap these
to do this you will have to pull engine
you alsocannot weld craCKS IN A FLEX PLATE
FLEX PLATES flex THEREFORE WELDING IS A WASTE OF TIME
WELDING WILL ALSO PUT FLEX PLATE OUT OF BALANCE WHICH AGIAN WILL CAUSE CRACKS AND PROBABLY WAS THE ORIGINAL PROBLEM TO START WITH
0helpful
1answer
2helpful
2answers

Started motor problems on Toyota Camry 2000

You need a new starter bendix, or a whole starter. Best do it soon before you tear the teeth of the flex plate. Once you do that you have to pull the transmission to change it.
0helpful
1answer

1989 volvo 740 gl. Put new starter in, now it

i cannot remember but i think there is a starter relay, its located in the engine bay the wire color is the same as its is on the starter motor, and feeds back to the relay, in the relay box in engine bay if this model dont have the relay as some models did not have it fitted and it was a straight from the ignition it can cross over on the ignition switch, and that would need to be replaced, or changed to button press, were by cutting the wire on the starter wire on the ignition and feeding it to a switch button.
2helpful
1answer

Engine swap, car will not start

It sounds like you don't have the correct flex plate and it is throwing the timing off not letting it fire at the correct time.
Not finding what you are looking for?

223 views

Ask a Question

Usually answered in minutes!

Top Volvo Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6988 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

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

Answer questions

Manuals & User Guides

Loading...