Question about 1992 Daihatsu Rocky

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90 rocky check engine light on jump connecter no code flashing

Bad ecu ? runs rich

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Check the o2 and map sensors

Posted on Nov 12, 2008

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Adjust the air and fuel mixture. I have owned a 91 rocky for 16 plus years.

Posted on Feb 19, 2009


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My holden barina was running rich took it to mechanix he said its the ecu i replaced the ecu and serviced it engine looks stressed then now the whole car is vibrating can you help me with diagnosis

1. I would be very wary of any mechanic that told me the ECU needed replacing because the engine was running rich. I would be getting another opinion. The engine may well have been running rich purely because you had a significant vacuum leak or perhaps even a couple of significantly leaking injectors.
Clearly the guy was hopeless and has done nothing to fix the relatively minor problem you had originally.

2. From what you have said the engine is now misfiring badly (this causes the vibrations) which can be due to a number of different issues. You cannot even begin to diagnose the problem(s) until you hook the appropriate scan tool on the car and see what the engine issues are because the faults will then show up.

3. This is not a problem you can really fix yourself with very limited knowledge and equipment and if I were you I would take my car in to Holden service and have them check it over. If you are not happy with their diagnosis you can go elsewhere for another opinion.

Jan 07, 2016 | Holden Cars & Trucks

1 Answer

What does running rich mean? and is it an expensive fix?

The motor runs on a mixture of fuel and air. If the mixture is wrong it's not running at maximum efficiency and in some cases can be bad for the engine. When there's too much fuel in the mix it's called running rich, too little fuel/or too much air then it's called running lean. There are a few reasons why an engine will be providing a wrong mix so it's best to get it professionally diagnosed, that's cheaper in the long run than a new motor. Most likely to be something simple like a dirty air filter but could be broken injectors or faulty ECU.

Jan 02, 2016 | 1999 Ford Explorer

1 Answer

I Have a 1993 GEO Prizm that the O/D light is flashing and it starts off I 2nd or 3rd gear.. the codes that was pulled are 26 and 36.. how do I fix this problem?

1.6L or 1.8L? engine.there are 3 engines,
1.6L with one injector and one with 4 and the 1.8L with 4.
and the ecu is different on each.

tell which terminals were jumped. and which lamp flashed?
Corolla - jump DLC terminals TE1 and E1 with a short lead 1

which transaxle.?
A131, A240i, a241h, or A245e, (the e trans is tcm shifted)
The 7AFE engine has the TCM and ECU in same box.
the 1.6L single injector engine runs a pure hydraulic trans.(no TCM)
TCM's engine/trans setups.
the 4speed, has 3 ranges switches, and 3 solenoids. and speed sensors., the MPI engine ecu shifts the transmission the TBI engine does not. MPI has 4 injectors, this your car?

if the OD flashes driving, this means TCM sees errors.
can be bad sensor inputs to the TCM
or bad shifter switch, (really they are sensors too, status switches)
and the TCM can see bad speed sensors.
the TCM can also flash if the solenoids are dead. or transmission slips. (nut shell answers)
IF it skips gears, the TCM may be in limphome, they do that on errors. to protect the transmission for damage.

first, off , prizm is just a toy corolla and those are really corolla

best page on car., but i cant find your codes? are you sure you counted correclty? 26 is too rich running. (fuel ratio) 36 I can not find anywhere, (stumped me)

post vin on car and we can look up what's under the hood.
put xxxx and end of VIN. for privacy.

May 06, 2015 | Geo Cars & Trucks

1 Answer

94 ford mustang 3.8 engine why is no. 5 cylendre running too rich

How do you know #5 is running rich? error codes tell you that? I doubt it. But if you are sure, check the connections and the wire all the way back to the Ecu. my wild guess, the control is shorted to a positive supply and therefore the injector thinks it is supposed to supply wide open fuel. Or you have a bad ecu that is telling it the same thing.

Mar 21, 2015 | 1994 Ford Mustang

1 Answer

After I start the engine it runs fine until it warms up to operating temperature and then runs rough and produces black smoke until t dies. It will not re-start normally until it has cooled.

Bad coolant temp sensor making ECU think engine is still cold, thus running rich, as if choke is on. There are two temp sensors, one for dash gauge (one wire) and one for the ECU (two wires). You can remove it and test with voltmeter by placing unit in hot or cold water to compare readings.

Jan 14, 2015 | Cars & Trucks

1 Answer

How to fix check engine light 90 skylark 2.5 engine ?

If u know of someone who has an old scanner u can easily access the codes. Otherwise u need to jump pins a and b in the doc together with the ignition.on but the motor not running. The check engine light will flash codes. Long flashes are r tens and fast flashes r ones. It will start with 12. One long and then 2 fast. This will sequence 3 times and then go on to more codes. Once u have the codes u can look them up to get to the correct failure area. U may still need a pro to diagnosis it further but u will have a clue to the affected failure. Fyi the 12 is just a distributor code that will show up
since the engine is not running. This is a normal code and should be ignored.

Aug 17, 2014 | 1990 Buick Skylark

1 Answer

Fouls plugs after 50-55mph

its rich, (which engine, there are more than 1) ?????
and is not in closed loop mode (ECU) fix that first.
so diagnose rich.
EFI engines. no country stated, as others have carbs way newer,.
1: too high fuel pressure, (gage it) has spec. and steps.
2: injector(s) leak. same tool above finds this, ask.
3: ECT reads low temp all time time, (thermostat bad, or missing?)
4: IAT reads too low. (TBI engines, with MAP sensors)
5: 02 sensors bad. (if all else is good and o2 reads wrong its bad)
6: exhaust leaks near, 02, causing o2 to read lean, forcing max rich.
7: did you run the ECU scan codes? the Check engine flashing light using the diagnostic jumper , yet?

mostly those. there are tests for each. ASE ways and means.

if your swift has a heated 02 sensor, it can even hold closed loop
at idle..... sure can, and if so , i check that first.
then closed loop at 2500 rpm , in neutral. (how is complex)
on these old dogs. suz, the worst ,no scan tools. are sold over the counter. so I must use a scope.
i watch the 02 sensors output. and make sure engine goes to closed
loop, if not i fix that. first.
there are ways to do this, (by me forcing lean or rich using other tricks of the trade. ask. I do so , to see if i can wake up the o2 sensor.
this is all covered in ASE courses...... this magic./

id be all over, fuel pressures, REAL not guessing or squirting checks bs.
id be all over exhaust leaks near the O2.
and first a new 02. most cars, its like long ago ,dead and you
look and the tip is , GONE! 1992 oxy sensors are useless.

Jan 21, 2014 | 1992 Suzuki Swift

3 Answers

Car acts like it doesn't want to go..I was told it could be the O2 sensor?

take it to a part store and have them scan it for the codes they do it for free,and let me know thank you ted

Dec 11, 2012 | 2002 Volkswagen Passat

1 Answer

97 wrangler 2.5 running rich

this is a MAP , speed density EFI fueling system,,,,
not misfiring.
in no order,
  1. map reads, low all the time cause rich, (low means low vacuum that is real) the ECU sees that and adds huge fueling.
  2. fuel pressure way too high bad PFR.
  3. injector leaking i do an injector leakdown test, or balance test, like the book shows. (and has 3 causes)
  4. front 02 sensors struck lean , forced ECU to go RICH. Any exhaust (its air sucking in) leaks, cause the 02 to go nuts or stick at 0v all the time. and RICH will happen. unplug it , get better?
we use simple tools to find this.
is vacuum at 19 inches HG at idle.? hot? sealevel #s/
???? clean the map yet?

Sep 08, 2012 | 1997 Jeep Wrangler

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