Picked up a 92 SC400 and car has no power HELP
04-10-10, 03:46 PM
#17
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04-11-10, 09:35 AM
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but i figured it out just about a week after! it's definitely NOT your catalytic converters! I hollowed mine out and that didnt help at all lol GL
04-11-10, 10:13 PM
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Go buy new distributor rotors and make sure they are put on properly!!! My car was having the same issue after a timing belt and water pump change, the idiot (me) who put the rotors back one put one on wrong but i figured it out just about a week after! it's definitely NOT your catalytic converters! I hollowed mine out and that didnt help at all lol GL
but i figured it out just about a week after! it's definitely NOT your catalytic converters! I hollowed mine out and that didnt help at all lol GLI have just done one side of the distributor caps and rotor (driver side) and have not put in the passenger side as I see that i need to take out radiator hoses and maybe a few more parts. Please advice on how to take out distributor cap cover on the passenger side. i will change that and see what is going on . thank you
04-11-10, 10:14 PM
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04-12-10, 07:01 PM
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Disconnect ignition coil No. 1 electrical connector.
Measure resistance across primary terminals.
Should be 0.40 - 0.50 ohms
You can test that but I don't really think it's a coil. It sounds like a fuel issue. Check the pressure and look for any leaks. They may be really small. And it wouldn't hurt to try a fuel system cleaning.
Measure resistance across primary terminals.
Should be 0.40 - 0.50 ohms
You can test that but I don't really think it's a coil. It sounds like a fuel issue. Check the pressure and look for any leaks. They may be really small. And it wouldn't hurt to try a fuel system cleaning.
04-12-10, 11:38 PM
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Disconnect ignition coil No. 1 electrical connector.
Measure resistance across primary terminals.
Should be 0.40 - 0.50 ohms
You can test that but I don't really think it's a coil. It sounds like a fuel issue. Check the pressure and look for any leaks. They may be really small. And it wouldn't hurt to try a fuel system cleaning.
Measure resistance across primary terminals.
Should be 0.40 - 0.50 ohms
You can test that but I don't really think it's a coil. It sounds like a fuel issue. Check the pressure and look for any leaks. They may be really small. And it wouldn't hurt to try a fuel system cleaning.
It runs like new the power sound until it hits around 2.0-2.5 k rpm in gear . that is when it stutters and will not go any further i have trouble keeping it at 65-70 mph . I will check the fuel pressure and then change fuel filter .
The mechanic say it can be the TPS throttle position sensor , can a bad TPS cause the car not to go?
thanks
04-13-10, 06:52 AM
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Yeah if your coils are bad it would run really rough all the time.
I don't think it's the TPS because you only have this problem when your in gear and the engine is under load right? If you can bring the rpms up when your in neutral just fine then the tps sensor sounds like it's working. Now if this problem occurs both in gear and in neutral than yes I might be a tps sensor. If you have some sort of scan tool that shows data it is really easy to check the sensor.
And if you want to be sure that it is not spark related just go pick up a cheap spark tester from a auto parts store and just check it at every wire before the plug. I think there like $5 and there very easy to use.
I don't think it's the TPS because you only have this problem when your in gear and the engine is under load right? If you can bring the rpms up when your in neutral just fine then the tps sensor sounds like it's working. Now if this problem occurs both in gear and in neutral than yes I might be a tps sensor. If you have some sort of scan tool that shows data it is really easy to check the sensor.
And if you want to be sure that it is not spark related just go pick up a cheap spark tester from a auto parts store and just check it at every wire before the plug. I think there like $5 and there very easy to use.
04-14-10, 08:54 PM
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i got one engine code 71 check out and also a friend of mine said it is the TPS throttle body sensor? Can the TPS cause such a problem with no acceleration or power in gear pass 2,000 rpm?
04-19-10, 11:28 PM
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One mechanic said it maybe a bad TPS throttle body sensor?
any one got any idea now?
04-19-10, 11:44 PM
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oh and your car is running like that becuase it knows someting is wrong. its in fail safe mode. if a vital sensor is sending wacky reading back to the pcm it will ignore it and substitute the value based on all the other sensors in order for the car to still run. but it prevents you from going over a certain rpm or speed limit in fail safe to prevent more damage. and also sets a engine light
04-21-10, 03:09 AM
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oh and your car is running like that becuase it knows someting is wrong. its in fail safe mode. if a vital sensor is sending wacky reading back to the pcm it will ignore it and substitute the value based on all the other sensors in order for the car to still run. but it prevents you from going over a certain rpm or speed limit in fail safe to prevent more damage. and also sets a engine light
thank you
04-21-10, 03:11 AM
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Nope, but I have changed dist cap rotor, wires plugs, ignition fires correctly car runs perfect except when it gets to about 2500 rpm then it stutters and has no power kinda flat lines and goes up slowly now since i did the fuel filter today!!!
One mechanic said it maybe a bad TPS throttle body sensor?
any one got any idea now?