Question about 1990 Oldsmobile Cutlass Supreme Conv

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ECU My car 90 olds. put it check engine soon light and rougth, etc special in idle time , Mecanic chanche spark plugs , then coils , etc sensors and divices finally he said me is the ECu actual the cars don´t start the last time started god ans rans about 5 min. and stop .What it could be? can I change only the eprom? i understand for my car is the ANLP 3645 .if I change it only could it to being out? The ECU looks like new.I mean no broken pars no smell caratherictic on short etc... pllease help me cause in my country there no special people for this m,ake Thanks a lot from Ronny

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I would do injector test and you shouldnt pay more than $100 for this at a dealer but for 8 bucks try some chevron injector cleanor see if that helps

Posted on Jun 18, 2008

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1 Answer

How do i seat the oops timing to the spark plugs


hello Stu
no engine options stated, there are 4 engines. we cant guess that.
all 4 spark plugs dead, ?????????????????????????????????????
we next use a scan tool,
plug it in, get comms.
then crank for 5 seconds,
release key.
then see why there is no spark (ecu cuts fuel if spark is missing)
use any scan tool.
Generic for all EFI cars made.
if all you want to do is guess. then nobody can help. you.
here is a short list
1: bad fuse (looks good but is not) 0v on one side. key on.
2: bad connections in the EFI system (spark related)
3: bad ECU, (nah) (I repair them)
4;bad coil
5: bad ignitor to coil.
6: bad CMP (cam sensor)
7; bad CKP sensor (if separate from CMP) depends on engine used.
8: bad wiring to any of above. bad connectors to any of above.


learn to use a scan tool and win over 90% of the time,
working spark or injector or A/T transmissions.
on 2006 and newer cars, even more true.
on newer cars the scanner can even tell you the fuse is blown
even though the mech thinks its good.
some fuse have hair line cracks, that cant be seen.

the Scan tool does report bad sensors, if you just look.
at all times !!!

Apr 10, 2015 | 2006 Suzuki Forenza

2 Answers

Crank sensor for 1994 jeep laredo


keep it simple first disconnect coil wire from distributor leaving coil connected, put a screwdriver in wire place it away from fan or other moving parts such as belt , and crank engine, u shld see spark. if not u found ur problem. coil needs to be replaced

Feb 14, 2014 | 1994 Jeep Grand Cherokee

1 Answer

No electricity spark plugs 4,00 liter


check all fuses first, every time, something fails EFI.
the scan tool will tell you why 90 % of time.
connect scan tool
key on
crank for 5 seconds, see scan tool show 300 RPM? about.
good, no RPM is bad sensor (Cmp or ckp)
release key , do not turn off yet
see DTCs stored, now, bingo, its telling you what is bad. OMG.
p0340/ 355? and the like? are bad CMP, bad CKP, or others get em
post em or look them up in the FSM. or at alldata.com
Theory:
the ECU creates spark
there are the 2 sensors that tell the ECU when to spark (inputs)
and the ECU DRIVER the ignition IGNOTOR, that runs the ignition coil.
1 coil or 6 coils. depends on year.
4.0L I6 Jeep engines.


did you check for spark directly at the 1 coil car or at all 6 coils for 6 cop coil cars?

cops are coil over park plug, i think your car is 1 coil, had a 99 jeep.
and this old six still had one, coil, so does this one coil make spark
to a test spark plug, Y/N
if yes, the dizzy cap is bad or wired wrong. to plugs.
I no spark here, do the DTC scans above.!!!!!
post back results.

Jan 20, 2014 | 1996 Jeep Grand Cherokee

2 Answers

1990 nisan n13 motor 1.6, has no spark to coil i drove car to train station, when i got back the car would not start, replaced coil, distributor, ecu box, all fuesible links, plugs & plug leads, fuel...


Your car has both a crank and cam position sensor. First start with your crankshaft position sensor. It is located by the harmonic balancer on the front of the motor.

Nov 28, 2013 | 1990 Nissan Pulsar

1 Answer

Replaced cps,distributer(cap,rotor,cam position sensor)checked coil good still no spark,replaced coil wire and plugs is the computer next?ignition control module is in the pcm i think


If the check engine light does NOT come on when cranking at the times when it won't start, then your ECU is in need of repair. The engine will only start after the check engine light comes on and the ecu is what controls that. It's likely going bad, causing the delayed start problem typical of early 90's jeeps. Repair or replacement services for your jeep ECU are available on ebay.

Aug 26, 2012 | 1993 Jeep Grand Cherokee

1 Answer

No spark on 1994 jeep grand cherokee /wont start


If the check engine light does NOT light up on the dash when you turn on the ignition, then your ECU is in need of repair. The engine will only start after the check engine light comes on and the ecu is what controls that. It's likely going bad, causing the delayed start problem typical of early 90's jeeps. Repair or replacement services for your jeep ECU are available on ebay.

Jul 24, 2012 | 1994 Jeep Grand Cherokee

1 Answer

Car wont start


being 94' im sure it has high miles, cam and crank sensor common to fail over time do to wear and heat exposure. check the basic, make sure you getting fuel and sparks. fuel pump only work as long the engine is turning over due to the crank sensor sense the flywheel turning. crank sensor may be faulty. no sparks, check coil make sure is good and putting out 12v, auto zone can test it for free. good coil, than check cam sensor, cam sensor senses the cam turning and tell the ecu to tell the coil to disperse the sparks to the plugs. cam and crank sensors, there no way of testing it but replacing the unit unless you have the special equipment to test it; both is fairly cheap to replace, check ebay.

Oct 24, 2009 | 1994 Mazda MX-6

1 Answer

No spark, 1988 Toyota Camry 3SFE 4cyl, 5 speed.


there is no crank sensor on this vehicles 2.0L. If you have power to the coil, new coil, cap and rotor try this if not done yet>>>Unplug coil power first....Try pulling off the distributor cap, and make sure the rotor is spinning with the cam...If this fails to spin, inspect the entire distributor assembly. If it passes, Inspect all the power circuit and wiring to the dist assembly, if ok possible ecu. i recommend having a mechanic check it out!! Hopefully this helps...please rate...thanks

Aug 11, 2009 | 1988 Toyota Camry

3 Answers

'93 Mitsubishi Mirage Still Not Starting


Hi there are few things that you have not check that can cause this problem,cap and rotor , pick up coil regular coil ,fuse (start with the less expensives) good luck

Aug 18, 2008 | 1993 Mitsubishi Mirage

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