Questions On A 2000 Volvo S70

santem · Post by **santem** » 09 Dec 2011, 17:44

I'm new to this form, but not to volvos. I currently own a 2000 S70 AWD and have two questions regarding it. I have noticed that the car seems to struggle to start. Sometimes slightly and sometimes I have to try a second time to get it to start. Now after i purchased the car and about month before I noticed this I got a P440 (I Believe) but I know it was about the EVAP emision system. After removing the hoses to the EVAP solenoid (The one in the front of the car near the radiator) and reconnecting them the light went away. I guess my true question is before I go replacing the Spark Plgs, considering its a 12 year old car, should I be looking at anything else? The check engine light hasn't come on since and the car runs fine. I have a good amount of Mechanical skills and want to get to the root of the problem before New England winter sets in.

Second Question: My passenger side front speaker does not work, should i replace it or first check the wiring and connections considering the electrical "history" with this model type? Also if I need to replace could anyone reccomend how to replace it and a place to buy a replacement?

Thanks...

P.S Replaced the battery for an OEM one after purchasing the car

Post by **BEJinFbk** » 09 Dec 2011, 23:43

You may have a flakey check valve between the pump and engine.
Just for grins, when you go to start it, turn the key into "run",
give it a slow count to about 5 and see what happens.

As for the speaker, that's one electrical component that generally holds up well.
In fact, the wiring on these cars is usually fine. It's the switches and other peripherals
that can give you grief. Keep reading! MVS covers all the common items very well.
Window switches, door latch/lock actuaters, blower motors and other ECC parts, etc.

It's easy enough to remove the radio and check the speaker with a small battery.
Be sure you have the radio code before you unplug it. Then, using the wiring diagrams
available here, you can "pop" the speaker with a AA battery to see if your problem is
with the wiring/speaker or the radio itself. If you need to replace it, it's no biggie.
Pop the door panel and there it is. You should be able to pick up a used single for cheap.

Diagram downloads: https://www.matthewsvolvosite.com/volvo-wiring-diagrams/

And if you haven't found out about your "Doomed to Fail" Electronic Throttle Module yet:
https://www.matthewsvolvosite.com/forums ... m.php?f=12

By and large, these are really nice cars. And you scored AWD - Enjoy!

santem · Post by **santem** » 10 Dec 2011, 06:47

Thanks, and by turn the key to "run", do you mean position II on the ignition switch?

Post by **BEJinFbk** » 10 Dec 2011, 13:20

Yes, sir - Just give the pump a few seconds
to build pressure before you bump it over.

falconbrother · Post by **falconbrother** » 10 Dec 2011, 21:16

I have a 2000 V70 that had a hard start issue. I did the check valve install and it blew out my fuel pressure regulator. The only way to be sure about the check valve is to use a fuel pressure gauge. You can pick one up at Harbor Freight right now for 20 bucks.

A fairly common reason for hard starts in 2000 V/S70s is the antenna ring at the ignition switch. That was the fix for my issue. I ordered one from Volvo and replaced it in about 15 minutes. It requires no programing. There may be a code stored in the OBDII system without getting a light. You'll need to get a reader or go by Auto Zone and let them hook up a reader. The antenna ring issue usually goes like, the car starts, runs for a second and cuts off. Then it may take one or more tries to start it after that. What's happening is that the car starts, test for the security chip in the key, doesn't find it and shuts the ignition off. Pull the key out, flip it over and try to start again. Sometimes that will help.

Anyway, don't assume anything. If you think it might be the fuel pump check valve make sure to test it. The in-line check valve may cause too much pressure to build up on the fuel rail after engine shutdown, especially in the summer when it's hot out. In a post shutdown "after boil" the fuel pressure at the rail can get quite high and start forcing fuel out of the system. Plus, I spoke with a mechanic at Volvo and they said that they almost never find a bad check valve in the 2000 fuel pumps.

Hope this helps. If the antenna ring is bad and causing the hard start there should be a code stored in the system. It's one of those codes that doesn't necessarily turn the check engine light on.

santem · Post by **santem** » 11 Dec 2011, 06:48

Ok thanks, will try to check it this weekend, and when checking the speaker with the battery, What should I be looking for if its working?

Post by **mikealder** » 11 Dec 2011, 07:05

P1670 is the code you get for poor immobiliser contacts - Mike

santem · Post by **santem** » 11 Dec 2011, 07:11

Ok thanks, so far no check engine light (Knock on Wood) so I'll replace the sparks plugs becasue I'm pretty sure they need to be, then if that doesn't help I'll check the check valve. Where is it located on the S70 car?

santem · Post by **santem** » 11 Dec 2011, 11:16

Just replaced spark plugs using E170_Driver's tutorial https://www.matthewsvolvosite.com/forums/viewtopic.php?f=9&t=27232&p=122733 and the car is running much better. Will have to see what happens during the week.