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Problems at normal temp, rough idle, clicking.....

chu77

By chu77
in 986 Series (Boxster, Boxster S)

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chu77 Member

chu77

Posted
Posted (edited)

I just got a 1999 boxster, 2.5L, 5spd, it runs great until it hits 180F.

At 180F

1) Idle is rough, drops below 400 and back to 1100 everytime after I rev it.

2) Stalls at fiction point

3) Idle will produce oil light below 400rpm and somtimes stall

4) Clicking noise rear right side, almost a rattle in 1 and 2 gear

I've cleaned the IACV, check the oil levels, added octane boost

Is there a way to reset the computer?

Or is this another RMS or IMS problem? But the car runs perfect below 180F.............

Edited by chu77
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RFM Member

RFM

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Try to catch the fault codes with a diagnostic tool, disconnecting the battery will reset the DME ( watch the radio code ), it is probably not RMS or IMS.

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chu77 Member

chu77

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Try to catch the fault codes with a diagnostic tool, disconnecting the battery will reset the DME ( watch the radio code ), it is probably not RMS or IMS.

Got code P1691 which is a short for the cel light. I checked the light and it was not burned. Are there a fuse for the CEL?

Also the engine is very hard to start once warmed up, I have to give it half gas in order to have it catch.

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chu77 Member

chu77

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P1691 Check Engine Malfunction Indication light (MIL) - Open Circuit

Potential cause:

- Break in wiring.

Are you sure that is the only code?

Yeah that's the only code, but now I hear the clicking noise at cold temps too. Sounds more like a clunking noise now that I read up on more threads about the IMS. I'm also getting some oil leaks (2-3 drops per day) from the RMS area.

From what I know of the car's history it's been sitting for 2-3 years. I drove it 2k miles from U.S back to Canada and the engine still felt powerful but had this problem about 1k miles into the drive home.

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chu77 Member

chu77

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Well I was making a video for you guys to take a look and the engine quited on me. I tried to rev it to make the clicking noise and sounds like something seized and the engine stalled......

Any ideas? Here's the video

(Link to youtube, did it worked?)

Edited by chu77
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chu77 Member

chu77

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does the car start now after this incident?

No start, I've changed the oil, found lots of small sandy metal and the oil color was dark grey and thick (lots of metal in there)

Put new oil in the boxster, still no start. I tried push starting it and no luck.

Also there is no "Hummmm" before I start the car. Isn't that the fuel pump or the oil pump?

Edited by chu77
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Sputter Member

Sputter

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If you're right when you say "lots of metal" and "dark grey and thick", flat bed it to a shop. Don't be trying to run it at this point.

How did the oil look when you picked the car up?

You say it started doing this on the way back from buying it?. When you did the PPI prior to sale, what did the report say?

I don't want to scare you more than you likely are. A porsche shop will give you a much clearer picture.

Good luck man.

does the car start now after this incident?

No start, I've changed the oil, found lots of small sandy metal and the oil color was dark grey and thick (lots of metal in there)

Put new oil in the boxster, still no start. I tried push starting it and no luck.

Also there is no "Hummmm" before I start the car. Isn't that the fuel pump or the oil pump?

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1schoir Member

1schoir

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Engine is seized, looks like I'm going for a 3.4L swap. Anyone have one for sale? lol

Sorry to hear the bad news. Looks like you are trying to turn that negative into a positive though.

Try member "tholyok". I think he had one for sale recently.

Also, you could look at Mike Focke's Boxster Pages. He's got a good list of recyclers that deal in engines on a regular basis.

Regards, Maurice.

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