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Max revs of 4500 rpm, ideas?
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Old 02 Mar 2008, 06:21 PM   #1 (permalink)
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Max revs of 4500 rpm, ideas?

Hey folks,

First advice post here so hope someone can help me out!

I just bought a nice 93 import scoob, but after about 10 miles driving home, the Check Engine Light came on, i txt the seller and he said was cool and i should just do a wee ECU reset when i got home, i did this which sorted the issue for about 3 miles, then it started again.

When i put a bit of power on the car pulls like a train up to 4500 rpm (in all gears and when in neutral also)

I have read some other posts on this, and from what i gather it could be several different issues?

As i have no idea about the engines to be honest, anyone give me a wee started for 10?

CHeers folks

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Old 03 Mar 2008, 12:55 PM   #2 (permalink)
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the 4.5k is the default 'safe' mode, its switche's to that when the ecu detects an issue thats serious enough to possibly do perminent damage to the engine.

it could just be a duff sensor or it could be more serious, best bet get it to a specialist and see what they say
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Old 03 Mar 2008, 05:31 PM   #3 (permalink)
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just manually checked codes, 24 and 33, which is system idle malfunction/stuck ISC valve/short in isc valve and vehicle speed sensor, this sounding particularly bad yet? or am i not in for a hefty wallet dent?

Last edited by 2087; 03 Mar 2008 at 06:09 PM.
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Old 03 Mar 2008, 08:09 PM   #4 (permalink)
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does the speedo work??
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Old 03 Mar 2008, 08:10 PM   #5 (permalink)
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yeah buddy everything in full working order, except that the car wont go over 4.5k rpm in any gear and neutral, and as a direct result wont go faster than maybe 100mph
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