Mechanics

CHECK ENGINE LIGHT 25,26, AND 71.

1995 Toyota Camry • 257,000 miles

I already replaced of new Distribtor system, ECU, MAP, Idle control solenoid, coolant temperature sensor, spark and spark wire, ignition module. Anyway, my car seem no good idle and misfire, but it drive as speed very good after blue smoke gone few second (valve stem leaks bad). So, how do I test the fuel injection, 1 heat oxygen sensor and 2 oxygen sensor? I allways looking for scanner test. But 1995 Camry had no scanner of OBD2 plug, it a Diagnostic system not easy way to test. It like no reading live Data information, only trouble read code. I hate that, and I can't find clue of engine idle rough still.
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Iancarvalho
October 3, 2012.



Today, I finish, everything back on the engine to start the car, it seem not going be better, so far the fuel injection o-ring new and tight seal property on fuel assembly. I wonder why, this car not go up higher rpm for cold start engine, 2000 rpm. It still low rpm below 900 rpm idle at cold start and time to drive more then 30 minutes, still low idle same thing very bad misfire. Now, I have no good to get the fuel test gauge not fit of top fuel filter fitting. It not going to do anything to fit the fuel gauge. I am stuck anyway. Please give a change to figure out, what wrong with rpm and idle. I already change new idle control cost over $230.00. Japanese crazy thieve. I hate it.

Tiny
Iancarvalho
Oct 25, 2012.
If the IAC is working correctly, the idling speed should increase at cold start. Is the circuit working. Check for trouble codes again and see if there are any that has gone away or any that is new. If you did not erase the codes previously, do so and retest till new codes comes back.

KHLow2008
Oct 25, 2012.
Okay, I already clear out the codes from removed EFI fuse last night till morning. I check the Line from ECU terminal's wire of green/red line and green/yellow line to end of connection plug (Idle Control's plug terminal). And one Black/orange line had power 12 voltage. All wire just fine. I start the engine to drive on the road, more then 15 minutes. No new codes at yet and still bad idle stall many time after stop the traffic light, still very low idle rough. But it drive or race very good. It so wierd. Then I test scan on engine light, these light was said, Flashing, flashing, and over again flash light. My god, I already change ECU from Advance Auto Parts last second time few mouth ago. What the "Flashing mean, it bad ECU?"

Tiny
Iancarvalho
Oct 26, 2012.
http://www.2carpros.com/articles/toyota-trouble-code-definitions-and-code-gathering-method-1990-1995

Check the above link for how to retriee the trouble codes and understand what they says.

Bte if you have not cheecked the valve clearances, give it a try to see if they are within specs.

KHLow2008
Oct 27, 2012.
Okay, I have a book owner's manual of import vehicle code reader, same you gave us the information code. It say, Flashing one per 1/2 second, it mean that normal. I surprised about the ECU code read work fine and normal. So, the engine Idle still misfire or rough. That reason, Camry stalled sometime stall again after stop traffic light. But it drive or race still good, so weird again. Anyway. I will check the compressor gauge and fuel pressure test too.

Tiny
Iancarvalho
Oct 28, 2012.
Did you replace the IAC only or completed throttle body? If only IAC, did you clean the throttle body? Did you adjust the idle speed?
At operating temperature, what is the idling speed?
Have you checked the valve clearances?

KHLow2008
Oct 30, 2012.
All right, I got read 41 ips fuel pressure gauge at engine off with jumper at B+ and FP test, Key on. And then remove jumper from B+ and FP test, remove the vacuum hose to the fuel regulator and plug end hose. Measure gauge read say, 39 ips at engine idle. And test again for reconnect hose back to fuel regulator, measure read 38 ips at engine idle. So, I think of fuel regulator come out not match in my book (Chilton's Manul Book).

Tiny
Iancarvalho
Nov 1, 2012.
I all ready got new idle control and cleaning Fuel Injection done.

Tiny
Iancarvalho
Nov 1, 2012.
Was complete throttle body replace with IAC or only the IAC was replaced?
Are there any trouble codes now?
The fuel pressure is higher than specifications by 1 psi when idling with vacuum. This migh cause a rich running condition and can result in engine stalling.

KHLow2008
Nov 1, 2012.
I replaced new IAC from Advange Auto Parts and cleaning the throttle body with air blow and gas cleaner spray can. There no any new codes for engine running alot of hours so far. Do you think Fuel regulator bad? That I got my chilton book for test, it surpose be measure the fuel pressure at idle on 31-37 psi. I have read fuel pressure gauge say, over 38-39 psi. It too high, right. I try out the engine kick higher 2000 rpm, it reading the gauge say very low then 35 as possible, then I let the engine back to idle go up to read gauge say again over 38-39 psi. This book say, it must be idle for 31-37 psi. Okay, then I check each compressure gauge test read, 180 psi (1), 180 psi (2), 179 psi (3), 181 psi (4) cylinder. It hold pressure more then 5 min. All stay up very good cylinder.

Tiny
Iancarvalho
Nov 2, 2012.
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