Hi all, been a while since I've been on the boards since I sold my Volvo, but now I'm working on my moms. I need to find a new IACV for her '90 740- it's the two wire valve I need, anyone know a good source for them? FCP has them, they're a little pricy but I may just have to spend that much.

If you're wondering why I'm replacing it, it's because I have most of the common problems related with a faulty valve and it's not giving me the right ohm reading (it's regietering 4ohms).
Thanks

--Ben

If you're more of a morning person than I am.. send me an e-mail and we can probably work something out.

Wes is going on a road trip, so we're swapping cars (his is a 90 765).. if you want to parts swap to make sure it really is the idle motor (assuming you've got a Bosch car not a Regina one). That is if they can pry the keys to mine out of my hands.

FCP Groton is about as low in price as you can go, and still find an honest businessman behind the product.

Otherwise have you:

Tried cleaning the valve?
Tried adjusting the TPS and throttle valve to the proper specs?

--
alex

'89 765T, 175,6xx mi

Hey, what's up Alex?
Unfortunately I think it is a Regina, one mechanic told us that once and I don't know enough about them to know how to identify whether or not it is- do you know? All I know with regard to the ICV is that it's the two wire, which according to my 240 Bentley manual should be 8ohms whereas it's reading 4, which also seems odd since it's an even number.
I emailed the guys at FCP regarding how to tell which injection type we have so we'll see what they say- sucks if it is the Regina, being that valve is about $100 more than the Bosch.
I tried cleaning the valve but didn't adjust the TPS or valve, partly because of the differing ohm reading leading me to think the ICV is the fault.
OT, how's the 765t?

--Ben

Unfortunately I think it is a Regina, one mechanic told us that once and I don't know enough about them to know how to identify whether or not it is- do you know?

Check the FAQ, there may be pictures.

The big difference is that the power stage is integrated with the coil on the Regina system. So there's a big scary looking heat sink on the coil. Also, no AMM. The MAP does have connector on it, but it should look different from the AMM (obviously no Bosch PN on it). For shits and giggles I ordered a Rex/Regina manual (hey, it was only $10) along with the LH 2.4 book for fiddling with the friend's 760, and if all goes well they should be here next week.

http://www.brickboard.com/FAQ/700-900/ElectricalIgnition.htm#BoschorRexReginaIgnition

All I know with regard to the ICV is that it's the two wire, which according to my 240 Bentley manual should be 8ohms whereas it's reading 4, which also seems odd since it's an even number.

The resistance listed in the Bentley manual is for the LH 2.4 motor. If you can scam a Bosch part number off of the motor you've got, you'll get an idea of what's wrong.

If you search the archives you can unearth some real useful posts from a Volvo tech who posted here quite a bit on the Regina setup. I believe there were ECU updates and an updated FPR issued to smooth out the idle problems with the Regina system.

I love the service at FCP Groton, Nick is a great guy to deal with.. but I don't think he knows the cars as well as some of the more seasoned brick boarders/sbricks listers.

My 760 is doing great. New motor mounts and a rear sway bar.. and it feels like a whole new car. Had to bust out the impact tools for the right side mount. Of course it's not rattling so much either, now that I've ripped apart enough of the interior :)

--
alex

'89 765T, 175,6xx mi

Yup, it's a Regina. So much for using my 240 manual for this car, guess I can get rid of it now. I'll do some searching to see what I can find around here on the Reginas. Anyone know what Volvo made these versus just doing all Bosch?
Alex, I may need to reference you once you get your Regina manual ;) Perhaps it's time we get a manual for this car.
Thanks for the info.

--Ben

Supposedly the Regina system was cheaper (I believe the MAP sensor is a common GM part) to install in cars. AMMs and associated Bosch hardware are expensive while new.

Of course the economies of scale really hurt the people who own Regina cars now.

As for the manual, good luck. I happened upon it when browsing through some other Volvo manuals for sale (someone other than Skip, go figure). Volvo wants some ungodly sum for it (probably $30-$50). www.volvotechinfo.com.

- alex

FCP is least expensive, so your next shot is a boneyard.