HELP : More about my top speed problem
10-22-2004, 10:56 AM
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HELP : More about my top speed problem
ok..so I'm still having odd top speed issues.. and so after pulling the EFI fuse yesterday it still has the same symptoms...
ECT : off
O/D : on
89 octain
even on flat roads I get up to 69-75 but I can't hold it.. the overdrive kicks in and lowers my RPMs to ~2800 and then I loose speed... I can gun it and the tranny kicks down and my RPMs go to about 4000, I gain speed again... but once I back off the gas a bit, the RPMs go back down and I loose speed. it seems like the speed it likes to be at without downshifting is ~64.. I don't have the egg smell so I don't think the cat is bad...
anybody have any ideas? please?
ECT : off
O/D : on
89 octain
even on flat roads I get up to 69-75 but I can't hold it.. the overdrive kicks in and lowers my RPMs to ~2800 and then I loose speed... I can gun it and the tranny kicks down and my RPMs go to about 4000, I gain speed again... but once I back off the gas a bit, the RPMs go back down and I loose speed. it seems like the speed it likes to be at without downshifting is ~64.. I don't have the egg smell so I don't think the cat is bad...
anybody have any ideas? please?
10-22-2004, 02:19 PM
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Originally Posted by Brett636
Do you have a mechanical fan? If so check your fan clutch, could be frozen.
10-22-2004, 02:28 PM
#7
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Do a tune-up:
Plugs
Wires
Rotor
Cap
Fuel Filter
Air Filter
Redline S1 Fuel system cleaner
Check your timing - if it's too retarded (haha) you will definitely be losing power.
Do that stuff first then get back to us.
:bounce2:
Plugs
Wires
Rotor
Cap
Fuel Filter
Air Filter
Redline S1 Fuel system cleaner
Check your timing - if it's too retarded (haha) you will definitely be losing power.
Do that stuff first then get back to us.
:bounce2:
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10-22-2004, 02:36 PM
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Location: 100 miles offshore as much as possible, & Springfield Oregon USA
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Sounds like the problem is that once you get to that speed your throttle position is at the 'kick-down' point - it thinks you want to go faster (you do!) and you don't have the "oomph" to do it without a lower gear. Same way a Vette with a six speed can attain it's top speed only in 5th, not in 6th - need the rpms for more power. On older vehicles I would think adjusting the kickdown rod is in order... Is your Throttle Position Sensor adjustable? Or do you just need a tune up as AgRunner suggests?
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