Author Topic: Help don't know what else to do (Read 6145 times)

Jorgeconrico · « **on:** October 10, 2009, 05:33:58 PM »

Hey everyone-

Basically the problem I have is that my car won't rev any higher than 5500 rpms. The car revs past that (6800) when the car is warming up, but when the car gets hot the car seems to hit a "rev limiter" at 5500 and won't go any higher. If I shut the car down for 10 -20 min its fine and I can take to the redline, but then the problem continues. I thought the problem was resolved but i put new control arms and CABs on so I was beating on the car a bit today and of course it spoiled my day.

When the problem first started I took care of the "mess under the intake", changed the plugs and fuel filter. BTW I'm not pulling any codes with the stomp test. Any help would be awesome:)

Jorgeconrico · « **Reply #1 on:** October 11, 2009, 05:32:27 AM »

Beat on the car some more and another stomp test revealed a code of 1244 which I believe is the camshaft sensor, guess i'll be buying a new one... Has anyone had trouble with these symptoms which were related to the camshaft sensor?

RED IS 91 · « **Reply #2 on:** October 11, 2009, 05:48:43 AM »

Test your sensor first to see if it's within specs.

The crank sensor is 650+- and the cam sensor is 1250+- .The bentley manual is incorrect. Test between terminals 1 and 2 on your cam sensor and see what Ohms you have .

Jorgeconrico · « **Reply #3 on:** October 11, 2009, 07:55:42 AM »

I'm not getting any resistance. I'll be ordering one today. Thanks a million.

Jorgeconrico · « **Reply #4 on:** October 17, 2009, 10:35:39 AM »

I installed the new sensor, but I'm still not getting a reading. The multimeter is not faulty. I'm out of ideas...:confused::confused:

RED IS 91 · « **Reply #5 on:** October 17, 2009, 12:34:51 PM »

You hooked a multi meter up to a new sensor and you didn't get a reading??

Either your testing it incorrectly or you've got your meter on the wrong setting?

Jorgeconrico · « **Reply #6 on:** October 17, 2009, 01:07:49 PM »

I'm testing on terminals one and two and the multimeter is set to ohms.

DesktopDave · « **Reply #7 on:** October 17, 2009, 03:05:50 PM »

I was going to guess cam sensor myself, it controls spark timing. That could cause what you're seeing now.

But you have to get at least some resistance on the cam sensor... can you ohm out something else like a speaker or light bulb to verify your meter?

Jorgeconrico · « **Reply #8 on:** October 17, 2009, 03:32:35 PM »

The meter is fine. Red IS 91 was right, it was on the wrong setting. Anyway, there is resistance, but the problem now is that I'm seeing oil on the cam sensor. Could this be causing the problem? Does oil seep in the hole which the sensor is located as the car gets warmer, thus causing the high rpm misfires?

The only other thing I can think of is the O2 sensor. I have no idea when it was last changed, if at all.

DesktopDave · « **Reply #9 on:** October 17, 2009, 03:54:29 PM »

Make sure that resistance is in spec. It has to be very close or the DME will ignore the sensor. Oil shouldn't do much by itself, unless it's collecting rust & metal flakes. Then it'll keep things from running right.

Maybe do another resistance test on the sensor when it's warm? You have a spare right now anyway, test the original when it's hot & replace if it's bad.

Jorgeconrico · « **Reply #10 on:** October 17, 2009, 04:59:08 PM »

I just tested it while warm and I got a reading of 1541 Ohms. Do you think the oil is providing the extra resistance, which is causing the high reading?

DesktopDave · « **Reply #11 on:** October 17, 2009, 08:49:54 PM »

Could be. I've never taken one apart. They're just a coil...reverse of an electromagnet. That's why the resistance is so critical. I just had a thought...is there a gap spec for the sensor? Or does it just bolt in?

Jorgeconrico · « **Reply #12 on:** October 17, 2009, 09:03:10 PM »

Yes, I think RED IS 91 posted a page from the bentley manual at the beginning of the thread, which lists the gap spec, but I'm not certain.

RED IS 91 · « **Reply #13 on:** October 18, 2009, 04:42:08 AM »

Test your old sensor to see what the resistance was with it ?

Jorgeconrico · « **Reply #14 on:** October 18, 2009, 07:10:16 AM »

Its dead. I'm just going to say hell with it and buy a COP kit to see if it fixes the problem, but seriously I hope the oil covering isn't the problem, because wouldn't I then have to open up the timing case and change some gaskets??