Re: 1999 S70 runs then dies (1Wagon post)

Klausc · Post by **Klausc** » 22 Oct 2013, 16:04

Just condensated water this time of year, not to worry about it. You ought to see the exhaust clouds here in Minnesota in the winter!!

Klausc · Post by **Klausc** » 22 Oct 2013, 16:06

1Wagon wrote:Codes today are as follows:

PO238
PO236
P1238 (new one post MAF replacement)

Just one of those would have most people looking at the turbo boost controller. To have all 3 is indicative of a failed MAP sensor. Call IPD.

1Wagon · Post by **1Wagon** » 22 Oct 2013, 18:55

I am on iPd website now and trying to find the MAP sensor. I already found it once but what is another name for it? MAP sensor is not coming up on the iPd search.

Thanks,
Amy

Klausc · Post by **Klausc** » 22 Oct 2013, 19:01

http://www.ipdusa.com/products/6936/114 ... 40-s60-s80

1Wagon · Post by **1Wagon** » 22 Oct 2013, 20:20

So a MAP sensor is a BPS? I hope you can understand my confusion.

Klausc · Post by **Klausc** » 22 Oct 2013, 20:30

intake Manifold Absolute Pressure measures the pressure in the intake manifold. Boost pressure sensor is another name. There is also a Barometric pressure sensor. These are not simple Model A ford engines.

Post by **abscate** » 23 Oct 2013, 03:26

Only a MAP on your Electronic throttle body 1999, you have the right part in your post and pic above.

A turbo boost valve problem wouldn't be causing your idle stall IMHO. Those almost always fail closed which kills your boost.

As with all electrical parts, take the connector off and inspect it for corrosion, and connect/ remove a few times to see if the connector is the problem before replacing. Clear codes and see if it comes back.

You can disconnect that MAF if it helps your drive ability in the meantime too.

1Wagon · Post by **1Wagon** » 29 Oct 2013, 20:49

I inspected and jiggled the MAP sensor and didn't notice corrosion. I have not disconnected the MAF yet since I wanted to see what, if anything, would come of jiggling the MAP. I cleared codes and now four codes are showing:

PO236
P0238
P0455
P1238

This was three days ago and the car hasn't stalled or delayed once. Check engine light is on. I want to see what my car does before I disconnect MAF and order new MAP sensor. Sound reasonable?

Post by **abscate** » 30 Oct 2013, 09:01

I was getting worried your hood was going up far enough this late in the year.

P0236 and P0238 are Turbo boost sensor errors - I think the MAP is the only thing that measures air pressure on your 1999, so its pointing us to that.

P0455 is the generic EVAP code which we aren't too worried about right now

P1238 is a Turbo Control Valve Error (also called Boost Control Valve) - here is a post on that

First I changed the MAF sensor, the car still cycles at 500-1000 rpm, but the MAF sensor code is gone, only P1238 remained.
So I started to read about the MAF sensor and the whole intake system, and turbo. At this point, I found that there is a vacuum hose connecting the fresh air pipe and the pipe going to throttle body was disconnected, I put that back on. The problem persisted. There was no spring Clamp on the vacuum hose.

Since P1238 is for the TCV valve, I tried to replace it with a used one from ebay before spending $500 on the throttle module and time to take it out. The engine still cylces between 500-1000, but the code P1238 is gone.

Then today I finally lied down under the car, and found that the turbo pipe was loose from the radiator. I secured it, BINGO! Now the car finally went back to normal. The turbo pipe was attached with two small plastic hose clamps!

Two weeks ago, I had the lower coolant pipe replace by a local shop - thought he was nice, but now I think he intentionally did not put the clamps back on and used the plastic string instead of metal clamp. I almost went back to him after two-week of stress of dealing with my car. Good thing is that now I'm very clear about the ETC modules, MAF Sensor, and the air intake system!

Thanks for all of your advice!

I think you need a really good look at your air induction hoses from air cleaner, down to turbo, from turbo to intercooler (lives in front of radiator) and intercooler to ETB. These are the fat 4 inches hoses. I chased one of mine for 2 months before I found a bad connection - just like above. The hose doesn't attach to radiator, just near it on top and bottom.

I think I still have my old TCV which was not throwing codes in my kit. Its a 5 minute off/on located on the air cleaner.

Klausc · Post by **Klausc** » 30 Oct 2013, 10:37

abscate wrote:I think I still have my old TCV which was not throwing codes in my kit. Its a 5 minute off/on located on the air cleaner.

I think abscate should PM you and send you his used TCV, it only take 10 minutes to replace and is easy to reach (thinking of swollen belly).

The Intercooler piping can be easily checked, except for the bottom one where it attaches to the bottom of the intercooler. Just take an old, dirty shop cloth, wrap it around an intercooler hose near all of the clamps and try to twist it. If the IC hose moves, tighten the clamp. This includes the connection at the throttle body where the intake air enters the intake manifold.

I realize the MAP sensor is $80 and money doesn't grow in gardens, so ask IPD if it is returnable if the first 2 codes don't go away. They will probably say no, but it never hurts to ask.
EDIT:
I just looked at Amazon and found this: https://www.amazon.com/Bosch-0261230029- ... automotive
For $40.

Re: 1999 S70 runs then dies (1Wagon post)

Re: Re: 1999 S70 runs then dies (1Wagon post)