running rough video inside

[lunchb0x]

Hey all im having a lot of trouble with my celica running right.

93 celica gt
5sfe
100% factory everything

1st and most important is the idle. It seems to idle fine in park but when I give it throttle it seems to fluctuate a lot. If I hold it at half throttle it starts sputtering and running rough. If im at a stop and put the p3dal down it starts to feel bogged down then all of the sudden it kicks in. It happens every time and is killing me.


https://www.youtube.com/watch?v=1R3-...e_gdata_player
First video is under hood holding throttle

Https://www.youtube.com/watch?v=fqTy...e_gdata_player
Second video is me taking off from a stop

Lastly im trying to figure out why my tach only reads to 200rpm as shown in video 2

Thanks all

[123crazy]

Tht sounds like my car after i took it to get smoged.. they moved the timing. And i moved it bak. And now it feeps so much better

[lunchb0x]

They adjusted your timing in a smog test? Ive never touched the timing on this motor. Im not sure how itd be messed up.

[BottleCapBandit]

injector maybe.

[lunchb0x]

Thd only timing it could be is a little retard possibly? So just turn the distributor counter clockwise and try it?

[lunchb0x]

Bump. Fresh tank of gas in my truck to fill up the celica when I get home today. Im gunna try rotating rhe distributor slightly. Is that worth a try?

[123crazy]

Just try it. After all u wont lose anything...and their is one less prob to worry about lol

[Old_El_Paseo]

a timing light is not very expensive and a good tool to have ( or maybe you have a friend who owns one ). you should set it to -10 btdc ( factory recommended ).
if timing is ok. make sure spark is good. remove a spark plug wire and check if you get a good spark ( a spare spark plug is great for this ). also make sure spark plugs are not fouled up ...

if thats ok. then maybe its just a sensor ( i would suspect tps sensor ).

if all that is ok, tell us the results and ill tell you what to check for then.

[BottleCapBandit]

Originally Posted by Old_El_Paseo

a timing light is not very expensive and a good tool to have ( or maybe you have a friend who owns one ). you should set it to -10 btdc ( factory recommended ).
if timing is ok. make sure spark is good. remove a spark plug wire and check if you get a good spark ( a spare spark plug is great for this ). also make sure spark plugs are not fouled up ...

if thats ok. then maybe its just a sensor ( i would suspect tps sensor ).

if all that is ok, tell us the results and ill tell you what to check for then.

+1. TPS would cause the sputter at half throttle. But Im leaning on one injector also. Injectors will cause misfire. Ign Timing might help for the lack of power. I had a pretty bad dead spot between 2200-3100 rpm. Going from -10 to -15 degrees solved that issue.

[123crazy]

^I had same problem after smog… i dont know how mich i turned it.but its running like it was bfore smog check lol