1993 Toyota Corolla Low idle power

ABHITA

MEMBER
1993 TOYOTA COROLLA
4 CYL
4WD
MANUAL
180,000 MILES

Hi there.I don't know why my car misses sometimes and the idle power decreases alot. Sort of like a jerking. I have changed all spark plugs and the bougi cords and it was fine but after a week the problem still persists now and then. Please help me as I really need a solution

Thank you
Abhita

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Get the engine compression check and the fuel pressure check thencome back with the readings so I can decide what direction to take.

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Monday, October 13th, 2008 AT 5:26 AM

ABHITA

MEMBER
2 POSTS

Hi there. Thank u for your advice but I found the problem was a dead spark plug. I do have another problem dealing with my radiator. It heats up over the halfway mark and the water in the radiator is always drying up. What could be the problem? Have a nice day and thanks again for your help:)

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Tuesday, October 14th, 2008 AT 3:22 AM

RASMATAZ

MECHANIC
75,992 POSTS

Try replacing the thermostat-also check the water pump -do below

One way to test for a bad water pump is to squeeze the upper radiator hose when the engine is hot and idling. Careful, because the hose will be HOT! If you do not feel much coolant circulating through the hose when you rev the engine, the pump may be bad. The other cause might be a bad thermostat that is not opening properly (remove and inspect the thermostat), or a clogged radiator.

Inspect the radiator for clogging-feel across the front of the radiator it should be the same temperature-any cold spots means that its probably partially clogged.

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Tuesday, October 14th, 2008 AT 5:33 AM