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Join Date: Jul 2018
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993

hi
My English is not good, so please advise.

I have a Porsche 993 and some problems have occurred.

The engine idling at 600 rpm~800 rpm, high and low back and forth!

Already replaced
TPS
ISV

What else do have to do?
Old 08-03-2018, 10:49 PM
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Location: Central, Ohio
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Originally Posted by EVANpo View Post
hi
My English is not good, so please advise.

I have a Porsche 993 and some problems have occurred.

The engine idling at 600 rpm~800 rpm, high and low back and forth!

Already replaced
TPS
ISV

What else do have to do?
You will find more technical information on rennlist forums for 993.

https://rennlist.com/forums/993-forum
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Old 08-04-2018, 05:53 PM
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hi
Today i launch engine~~~Feeling very good!!!
After the engine reaches the working temperature, stop the engine....
Start the engine again and start to have problems.
But step on the gas pedal the engine idling in 2000 rpm not down,i shall ISV signal connector removal,engine speed returns to normal......

Report with everyone....
I already replaced...TPS、ISV、MFA、Vacuum hose.
Is there a way to solve the problem of engine idling?
Old 08-05-2018, 07:08 PM
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Location: Geyserville, CA
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Do you have a code reader - any DTC's?

Upstream Oxygen Sensors?
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96 993 Track Hippo | Spinning Hippo Racing
Old 08-08-2018, 03:18 PM
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Originally Posted by Don Plumley View Post
Do you have a code reader - any DTC's?

Upstream Oxygen Sensors?
No fault code~~~
O2 sensor is not faulty!!!!!!
Old 08-12-2018, 05:25 PM
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gduke2010
 
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Location: Minden, NV
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Do you have any engine modifications, like a light weight flywheel? If so, is your 993 a 1995?
Old 08-14-2018, 06:16 PM
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Originally Posted by gduke2010 View Post
Do you have any engine modifications, like a light weight flywheel? If so, is your 993 a 1995?
Dear gduke2010
The engine has not been modified, yes, my 993 a 1995!!
Old 08-14-2018, 07:21 PM
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