Hesitation under hard highway acceleration?
#1
Racer
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Join Date: Jul 2001
Location: Victoria, BC, Canada
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Hesitation under hard highway acceleration?
Hey, lately my (stock) 87 924S has been developing a slight engine hesitation under hard acceleration above 4,500 rpm. It will usually only happen in 3rd or 4th gear.
This is only noticable on the highway. Around town the engine is a smooth as silk. Also, the hesitation does not happen in hard take-offs in 1st and 2nd.
If I back off slightly from the gas when I get the hesitation, it stops.
It's not the biggest deal, because 95% of the time I do not drive the car full out in 3rd or 4th gear.
A friend of mine who was with me said that it felt like a bad spark plug, plug wire, or connection. Any ideas?
Thanks
-MAS
This is only noticable on the highway. Around town the engine is a smooth as silk. Also, the hesitation does not happen in hard take-offs in 1st and 2nd.
If I back off slightly from the gas when I get the hesitation, it stops.
It's not the biggest deal, because 95% of the time I do not drive the car full out in 3rd or 4th gear.
A friend of mine who was with me said that it felt like a bad spark plug, plug wire, or connection. Any ideas?
Thanks
-MAS
#2
I agree, change the filter, but also put a bottle of fuel injector cleaner in the tank on next fill up. It cleans a lot of crude out of the lines, pump and injectors.
You are running premium from a good gas station (read high volume, no water in tanks) right.
You are running premium from a good gas station (read high volume, no water in tanks) right.
#5
Three Wheelin'
I had a similar thing last summer and fall. It seemed that in 1st and 2nd in would drive right thru it, but in 3rd and 4th around 5k it was a violent stutter. Caused me to hit the visor a few times. Turned on to be a bad DME. As bad as it sounds to have to consider a bad DME as well, don't rule it out. See if you can find someone to swap with and test it. Might as well test it than buy one first.
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#8
Three Wheelin'
Originally Posted by CameronKame
I don't think we're having a hesitation quite that violent.