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Old 11-18-2013, 11:06 PM   #1
XDoXWhatX
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Default High idle at start or when put in park from gear and vibration

when i start my car it goes up to 2k rpm then slowly rises to 2500 rpm stays there for about 30 sec then goes down to 1100 rpm and thats where it stays i cleaned the IAC and checked for vacuum leaks and it finally threw a code p1599 and when it slows down to 1100 it has bad vibration through out car motor mounts are good any suggestions?

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Old 11-18-2013, 11:08 PM   #2
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Default Re: High idle at start or when put in park from gear and vibration

1599 is a stall.

Have you replaced the ECTS and checked the connector and wiring?

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Old 11-18-2013, 11:11 PM   #3
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Default Re: High idle at start or when put in park from gear and vibration

yes replaced ECTS and IAT and wires

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Old 11-19-2013, 12:37 AM   #4
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Default Re: High idle at start or when put in park from gear and vibration

and its a 2001 sl2

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Old 11-19-2013, 07:30 AM   #5
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Default Re: High idle at start or when put in park from gear and vibration

Is this the same rebuilt engine from another post or a different car?

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Old 11-19-2013, 07:47 PM   #6
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Default Re: High idle at start or when put in park from gear and vibration

same engine i did engine swap/ heads on

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Old 11-19-2013, 08:53 PM   #7
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Default Re: High idle at start or when put in park from gear and vibration

When the car is idling high, pop the hood and tap on the TPS. See if your idle changes. If it does you've found the problem and the TPS needs to be replaced.

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Old 11-19-2013, 09:01 PM   #8
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Default Re: High idle at start or when put in park from gear and vibration

already replaced tps bout to try iac and i borrowed a friends scan tool it says the engine is at a 41.5 % load at idle is this normal if not what would cause that?

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Old 11-19-2013, 09:16 PM   #9
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Default Re: High idle at start or when put in park from gear and vibration

Map sensor faulty? Its a load sensor to help the pcm determine fuel/air mixtures along with other sensors. Swap it out if in doubt.

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Old 11-20-2013, 12:24 AM   #10
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Default Re: High idle at start or when put in park from gear and vibration

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Originally Posted by XDoXWhatX View Post
already replaced tps bout to try iac and i borrowed a friends scan tool it says the engine is at a 41.5 % load at idle is this normal if not what would cause that?
Try cleaning the entire TB assembly, Richpin has a video on it.

But - I'm almost 100% sure it's the TPS. With the scan tool connected and the idle is high, keep your foot off the pedal and if the TPS is reading <> 0 there is something wrong with it or the wires.

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Old 11-20-2013, 03:23 PM   #11
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Default Re: High idle at start or when put in park from gear and vibration

ok just cleaned out tb iac and tried tapping on tps with no luck replaced intake manifold gasket no change and i will try map but on my friends scan tool it showed it was operational but never know and when i accelerate too quickly when in gear the vehicle starts to die throws the p1599 and then comes back to normal after i get it past 10-15 mph it runs great has excellent power

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Old 11-20-2013, 04:29 PM   #12
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Default Re: High idle at start or when put in park from gear and vibration

Scan tools are useless unless you know how to read and interpret static/live displays.

Example A member posting in the L-series reported the usual maladies with his engine along with an error code or two. Using a scan tool to check on error codes didn't seem to reveal anything except a question about maf sensor readings. Without any comparison to another maf sensor's readout and how to interpret displayed data, he was lost. Since I have the same engine it was just a matter of reading signals at idle and at speed. To throw things into perspective, there are different values used - one reader will display mass air flow in grams per second while another may display pounds per minute. Now what? Once a conversion is made to make sense of just one reading, a comparison was made and a hunch turned into finding a faulty maf sensor. It would be guessing any other way.

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Old 11-22-2013, 04:28 PM   #13
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Default Re: High idle at start or when put in park from gear and vibration

Ok replaced crankshaft position sensor high idle wnt away then next day car threw. P1626 and u1064 and another u code and lost all power and often stalls when accelerating I think its time to fill with gas and push off cliff. I really appreciate all your guys help if any1 can shine some light on my new delimas? Couldn't find anything helpful online.

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Old 11-22-2013, 04:35 PM   #14
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Default Re: High idle at start or when put in park from gear and vibration

Quote:
Originally Posted by XDoXWhatX View Post
Ok replaced crankshaft position sensor high idle wnt away then next day car threw. P1626 and u1064 and another u code and lost all power and often stalls when accelerating I think its time to fill with gas and push off cliff. I really appreciate all your guys help if any1 can shine some light on my new delimas? Couldn't find anything helpful online.
I dont believe a crack sensor can cause high idle, ive never seen one do that, High idle would be caused by a vacumm leak or a bad TPS, did you check all around the intake for leaks, When you removed the TB did you hook the hose back on to the purge control solenoid under the intake manifold, Are the connections for the temp sensor soldered and shrinked wrapped??

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Old 11-30-2013, 07:23 PM   #15
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Default Re: High idle at start or when put in park from gear and vibration

replaced ALL sensors re-did ects wiring yes did heat shrink and checked for backed up exhaust (sounded cool as hell) but no improvement looking towards injectors or fuel regulator? now the car only has idle problem know when hot and to fix loss of power i disconnected tps from tb and still left it connected to harness and opened tb more than tps (using a screwdriver and my friend holding it) and power problem seemed to go away immediately??? too much gas not enough air is it possible for fuel pump to give to much gas? or would that be injectors?

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