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1993 Lexus GS 300 Repair Question


Topics covered: Sensor, Battery, Battery cable.
Mileage: 204,000 miles.

Asked on September 19, 2011

Lost of power,rough idle & when giving it gas rpm's drop

I was diving one day doing 60mph and all of sudden i could not accelerate and lost power coming from emission test that i passed. ive just had a full tune up change mass air sensor no change,still no power and rough idle...
Avatar Asked by terrell brandon

Answer

Replied on September 20, 2011

check catalytic converter for plugging, check for vacuum leaks, check fuel pump pressure.

Tiny Answered by Jacobandnickolas (expert)
57,318 answers provided
Replied on September 20, 2011

When I unplug the mass air flow sensor it idle & run the mass air flow is new out the box the second one I took the first one back because their was no change

Tiny Response from terrell brandon
4 questions asked
Replied on September 23, 2011

It is your ECU Module. Probably got hit by severe heat. Typically it is the capacitors that need replacement on the board (less than $2) but you need a TV repair place to solder the new caps on board. $20 generally. The problem is finding where it is. This was ask before but was not answered. Instead they said check the battery cables. lol

Tiny Answered by ronsellers
0 questions asked

Replied on September 23, 2011

Do this work?

Tiny Answered by ronsellers
0 questions asked
Replied on September 23, 2011

You could not accelerate because to ECU dropped you into Limp mode. You will need to downshift to run the car.

Tiny Answered by ronsellers
0 questions asked
Replied on September 23, 2011

I will try that what do it look like & where is it located

Tiny Response from terrell brandon
4 questions asked

Replied on October 1, 2011

once agian same problem;now changed the ecu,full tune,checked the cats new vac hoses new mass air flow sensor and also change the complet throttle body & cleaned it car still wont idle rpms are low

Tiny Response from terrell brandon
4 questions asked