1989 740GL Wagon, Automatic, Air.


Fuelcode results
1-2-1 MAS this is after I pulled it with the engine running, it reset fine after clearing codes
3-1-1 Speedometer signal What effect will this have?? Speedo does seem to stick, but I thought it was a gear

Ignition test code results
1-4-4 Bad fuel injection relay; faulty wiring from LH to EZK; bad LH module WHAT IS LH and EZK
2-3-4 Faulty wiring or TPS; TPS adjusted incorrectly. But tested ok in the Mode 2 test.

Cleared all codes and made some adjustments.

Then ran a full mode 2 test with the following results;
I did not get a RPM test code, I did not get compressor OK code , and I did not get Engine idle code. Not sure why I didn't get RPM test code, it tested fine when I pulled the coil and cranked.

Then ran full mode 3 injection test with the following: Fuel injector tested ok, IAC tested OK (sounds like flapper being picked up and dropped), I did not get cold start valve test, I did not get a radio suppression relay (I assume it runs the pump momentarily), and I did not get fuel pump relay test (I assume it runs the pump momentarily) But the car starts and drives? Anyone have any ideas.

Car occasionally acts as if Engine lacks power; stalls; doesn't start or is jerky, I assumed a injector relay which was confirmed by the OBD code 1-4-4.

I know this is long and discombobulated.

 

First year and model please.
Then I can give you more info from there.

 

Can't believe I missed the most imporant part.

1989 740GL wagon Automatic w/air

 

Ok now the code comes back right away after clearing?

The speedo's on these things are known to burn up all the time and act really wacky.

Another quiestion do you have a Regina or Bosch ingition system?
(Bosch round coil Regina square coil.)

 

Fuel codes 3-1-1
injectioncodes 1-4-4
2-3-4

All came back. Mode 2 and 3 tests were done after the cleaning.

Have Bosch system (round coil onpassenger side by shock mount). But the codes I get from here make it seem I have a Regina system. This is why I'm so confussed. I'm trying to avoid just pulling and replacing relays, but that's where I'm at. There seems there might be TOO much information online for Volvos


Know aboujt the speedo, just surprised it sends a code. Wanted to make sure it wasn't something more.