Question about 1993 Toyota Camry V6
5sfe engine surging at idle and running rough. Currently running at 1000 rpm. Spark plugs are new and air cleaner ok, have cleaned and tested idle speed control valve and tested all ok. Any help would be much appreciated.
Check for air leaks in the vacuum pipes in and around the inlet manifold, they have a habit if going brittle and splitting.
Another possibility is the temp sender , if the ecu thinks the engine is too cold it will compensate causing the engine to " hunt". This can be something as simple as a worn radiator cap seal letting air into the cooling system and tricking the sensor.
Hope this helps, Marshall
Posted on Apr 29, 2010
What I read here sounds good but I would also consider the mass airflow sensor. These are a heated wire that is cooled by passing air, over time, they break. Disconnect the mass airflow sensor and see if the engine performance changes, if not that is the likely culprit.
Posted on Jun 03, 2016
My 92 camry did the same thing. It ended up being the egr system was cloged. They suggest cleaning the filter. I just deleted the whole system and plated the hole on the manifold. But I ran boost so no need for egr.
Posted on Jun 03, 2016
Fuel Injectors...... just fixed this on my a couple days ago, runs like a champ
Posted on Nov 08, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
Jan 11, 2016 | Toyota Cars & Trucks
Oct 28, 2013 | 1996 Honda Prelude
For idle issue,click the help links provided below :---
Bad miss at idle? http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html---------- Engine stumbles coming off idle when warm?
While stop engine idles like cylinder missing?
Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?
High rpm in neutral? Inconsistant high RPM in neutral? http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
Erratic idle on car?
Low idle when cold out side?
Idle Air Control (IAC) Valve Replacing?
intermittent engine failure while idle?
Engine quits at idle?
Car overheats and Air blows hot at idle? http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
not starting or turning over indicates towards multiple possibilities. It can
be issue with battery or weak battery. But if battery checks out ok, then it
can be starter issue or faulty alternator or problem with low fuel pressure or
no spark at spark plugs due to dirty spark plugs or faulty ignition
coil or injectors getting cracked or dirty and needs to be cleaned.
confirm the problem, the basic troubleshooting is required.
this link below and follow the troubleshooting:------
This will help.
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