These are the symptoms-possible causes?
#1
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These are the symptoms-possible causes?
Car is a 89 TII. 20k miles on the engine, 100k on the rest of the car.
- while idling, it 'hiccups' every couple of seconds which corresponds to a minor drop in rpm
- almost zero boost even under full throttle. needle creeps to maybe about a quarter inch above 0. pegged below -20 during regular driving and when engine is off / ignition is 'on'
- under full acceleration, the car seems to jerk. (as if the turbo was engaging/disengaging)
should i believe i have a vacuum leak somewhere which is causing my mixture to be too rich?
- while idling, it 'hiccups' every couple of seconds which corresponds to a minor drop in rpm
- almost zero boost even under full throttle. needle creeps to maybe about a quarter inch above 0. pegged below -20 during regular driving and when engine is off / ignition is 'on'
- under full acceleration, the car seems to jerk. (as if the turbo was engaging/disengaging)
should i believe i have a vacuum leak somewhere which is causing my mixture to be too rich?
#3
controlled kaos
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broken wastegate diaphram.. those normally don't go bad thou.... check your boost controller.. is the car really loud like an exhaust leak..... it could be either the gasket between the engine and the manifold or the gasket between the manifold and the turbo. those doo blow out....i've had both blow before... ??????
#4
Keep Right Except to Pass
- almost zero boost even under full throttle. needle creeps to maybe about a quarter inch above 0. pegged below -20 during regular driving and when engine is off / ignition is 'on'
I'm assuming the car is stock?
- under full acceleration, the car seems to jerk. (as if the turbo was engaging/disengaging)
#5
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Heff, the car is pretty much stock, cept for the intake.
I've got gauges in the mail, waiting for their arrival because I assume the stock boost gauge is gone. What worries me is the not-so-steady acceleration I'm getting. It's hard to describe; basically it feels like it's choking under full throttle. The car doesn't buck - it just doesn't pull away from the line steady. Happens throughout the power curve in the lower gears, not so noticable once i'm cruising at higher speed.
It definitely feels like it's being held back. I've never owned a turbocharged car before so I dont have any experience with how much power i'm supposed to 'feel' - however this does not seem right at all.
I've got gauges in the mail, waiting for their arrival because I assume the stock boost gauge is gone. What worries me is the not-so-steady acceleration I'm getting. It's hard to describe; basically it feels like it's choking under full throttle. The car doesn't buck - it just doesn't pull away from the line steady. Happens throughout the power curve in the lower gears, not so noticable once i'm cruising at higher speed.
It definitely feels like it's being held back. I've never owned a turbocharged car before so I dont have any experience with how much power i'm supposed to 'feel' - however this does not seem right at all.
#6
Keep Right Except to Pass
I know grounds can be a problem with the transition point of the secondary injectors. And stock cats can become restrictive after a lot of miles and prevent the car from revving feely.
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#8
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Originally posted by Josepi
So the turbo has 100K miles?
So the turbo has 100K miles?
#9
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I'd check the condition of the turbo. Shaft play...everything.
Stock turbo's for most turbo cars last 80-100K before needing service. I'm up to 103K on mine, and it's not boosting steadily.
Stock turbo's for most turbo cars last 80-100K before needing service. I'm up to 103K on mine, and it's not boosting steadily.
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Originally posted by amused
how much does it cost usually to have it rebuilt by a place like turbonetics? they dont have much info on their site
how much does it cost usually to have it rebuilt by a place like turbonetics? they dont have much info on their site
Check out the FSM (factory service manual) at www.fc3s.org ...
If the turbo is out of spec, give them a call. Plain rebuilds shouldn't be too much in price. Upgraded compressors and the "works" is generally something like 7-900.
Check everything else. Be sure what you replace is broken. I've done the opposite waaaay too many times.