Question about 1989 Oldsmobile Ninety Eight

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89 oldsmobile 98 won't start

Done changed coil pack and crank sensor put in new spark plugs and wires still will not start replaced starter as well it's a 89 ninety eight regency fe3 My 89 oldsmobile 98 is having starting problems. CAA checked out battery and it was fine as well as the starter. The CAA guy said he thinks it has something to do with Gas. Any Ideas?? I only have a 500 dollar budget to fix this car:(

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If you suspect its a fuel problem best to do a fuel pressure test, you can rent a tester at auto zone and do it yourself. They also can show you how to use it and what pressure it should be. Also if you turn the key to on position you should hear a hum from the gas tank and then a click that is the pump running and the click is the relay, if you don't then the pump isent running, also chk. the fuse and relay, it could be as simple as a blowen fuse or a bad relay.

Posted on May 26, 2009

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I chased this same issue with my 89 olds cutlass supreme started out with feul pump,sending unit and filter. That helped but still had issue then did air check valve, and throttle position sensor it helped a little more with runability but still had irregular starting so tested and replaced feul regulater oh boy that helped more yet didnt take care of issue. So beings the car ran great when it ran why do the injectors right. So i went after plugs and coilpacks and ignition modual lol boy this car runs good but still have starting issue lol so i took it to a garage for there input they told me ijectors and ECM was bad, boy so i did injectors and pc myself and bam car starts great on demand and when i want it to start. If you do the work your self but dont have the money for all kinds of parts call around for a diagnostic only cost for me was $30.00 and parts were under $300.00 injectors and ECM. All the other parts came up to almost $700.00. So if you got a budget to work with and want to get striaght to the issue have a garage with diagnostic eq. tell you what is wrong with it. They dont mind not doing the repair. Its still work for them just to do diagnostics. Good luck on your repair

Posted on Mar 31, 2012

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Your fuel pressure will leak down 1psi per every five minutes if it leaks down afaster tthan that then you have a problem if it has 40 psi while trying to start and when running that is what you need it will leak down overnight these cars are bad to have faulty ignition modules that makes the car try to run out of time.

Posted on Apr 30, 2010

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Just checked on a new fuel pump and it says it is 40psi. But we ran a test at the fuel rail and it waw 40psi with just the key to on. At the time it wouldn't start.

(It only starts... quickly, in morning or when sitting for hours. But, not always. Sometimes it is irregular.)

Someone told me that the 40psi needs to be constant... but, that isn't the case as the following day the fuel filter line had ZERO psi.

So check on how many checks to fine the proper psi. Found one site that said check fuel pressue on the rail after taking out relay... i think it is 2nd down on right column behind glove box. Then use jumper wire to bypass relay.

Then do another test... etc.

So find out proper testing for this car.

Also, need to check fuel pressure regulator.

good luck.

Posted on Jan 06, 2010

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Get like 45 dollas to get an alternater from the junk hard

Posted on Jul 23, 2009

  • both4ever Sep 20, 2010

    my father inlaw had the same problem until one of the mechanics found the problem was the plate thats under the coilpack that was it they told his that piece has a sensor that sends the signal so he got a newone and bam no problem started right up
    hope this helps

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97 oldsmobile achieva wont fire changed coil pack spark plugs cam sensor still wont start


Make sure battery has a full charge and battery connections all good.
If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse.
If you having a problem with more than one system, I want to check for rpm signal, that usually comes from the crank sensor. Not sure why you replaced cam sensor? I always want to check sensor wiring circuits before replacing anything. Don't replace anything unless your testing points in that direction.

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1997 Oldsmobile Achieva won't spark


id start by checking wires from crank sensor to pcm, using ohm meter, for resistance, or for open. at crank sensor connector, with it unplugged, probe each spade, one at time, with one lead and touch the other lead to good ground location. if you get a reading, you have a short to ground. if this is the case, i find it easier to run new wires from pcm to the sensor, vs tracking problem to its source. if you find no problem w the crank circuit, id first check wiring to coil housing, if it checks ok, try another coil tower, as i have got bad new parts in this same situation, on a quad 4. hope this helps. james white, white automotive, hopkins mo.

Feb 04, 2013 | 1997 Oldsmobile Achieva

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Crank, won't start problem. I checked the spark plugs on Jeep 98. Looks good. Could it be the crank sensor or starter coil?


Yes it is very much possible.But there are many other possibilities too,including starter and spark plugs issue.

If your engine cranks normally but will not start because it has no spark, or it stalls and won't restart because it has no spark.

You can also do a test to confirm the problem .The procedure to do the test is as follows:---

If your engine has spark plug wires, disconnect one of the plug wires from a spark plug and place the end of the wire near a metal surface on the engine. Then insert a small Phillips screwdriver into the end of the wire (the plug boot), or a small bolt or nail to provide a conductive path. Then crank the engine and look for a spark to jump from the screwdriver, bolt or nail in the end of the plug wire to the engine. If you do not see a spark, there is an ignition problem.

OR-----------

If your engine has a coil-on-plug ignition system with no plug wires, In that case remove one of the coils from the spark plug and insert an old spark plug, a spark plug tester or a screwdriver into the end of the coil. Ground the spark plug or plug tester to the engine, then crank the engine and look for a spark. No spark indicates an ignition problem.If the engine has no spark, check for voltage at the coil positive terminal when the ignition key is on. If NO voltage, then problem is on the trigger side of the coil (pickup, crank sensor, ignition module or primary wiring circuit).

But If there is NO voltage at the coil itself, then in that case the problem is on the supply side (the ignition switch or ignition wiring circuit).-----------------

Jeep cranks but no start:----------------

A jeep that cranks over but doesn't start, in many cases will be due to a bad fuel pump, a broken timing belt, an inoperative cam sensor or crank sensor. Also these problems are related to faulty spark plug. Check the spark at spark plugs when you start the jeep. Do you notice any spark. Actually you should see. If in case there is no spark then it's a spark plug problem. Also the coil pack gives power to spark plug. So check the voltage at coil pack. It will show 12 volt. If there is no voltage noticed at coil pack then its faulty coil pack that has to be replaced. If all the possible options checked out ok then check the car starter. The starter gets power from battery to start the jeep. If the starter is faulty then it will not let the car to start. Also check and confirm that there is fuel in the jeep. If its very low fuel then in some cases this causes the problem. Also check and confirm that fuel pump is functioning properly and the fuel filter is not clogged. One of the easiest ways to check for a fuel pump related problem is to spray a little starting fluid into the air intake while trying to start the jeep. If the car starts momentarily, then there's a good chance the fuel pump is not working or the jeep is out of gas. You can also listen for the fuel pump's humming sound when the key is first turned on. Also if a inoperative fuel pump is suspected, a good technician will always check to verify there is power and ground being supplied to the pump, to eliminate the possibility of a bad relay or electrical issue. Fuel pressure can be checked with a pressure gauge and if there is pressure, pulse can be checked at the fuel injectors in several ways including the most common, with the use of noid lights. If the injectors don't have pulse the engine won't start. ---------- This troubleshooting tips will help you to solve the problem. Thanks. Helpmech.

Jan 07, 2011 | Jeep Cherokee Cars & Trucks

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My '93 F250 5.8 l Automatic was turning over slowly when cranking to start. Replaced battery no change; Then after sitting for 2 mo. turning key to start produced only a click and dead gauges (battery...


The battery to starter connection has power.the battery is ok.but there are many other possibilities related to battery and its other connections,the spark plugs,the fuel pump,the fuel itself,the sensors(o2 sensor,maf sensor)the valve(IAC valve,egr valve). Most probably the spark plug,the coil pack and crank shaft sensor.This 3 are not getting power to get the car start.

There are some possibilities which you will have to check in this case:--

1) First of all check the power and voltage to the battery. With meter it will show exact 12 volt if the battery is charged. If the voltage is less get the battery charged at local auto repair shop. If the battery is internally drained and not getting charged then its time to replace the battery.

2) When you crank the car do you see spark coming at the spark plug? If no then its time to check the spark plugs and coil pack. If the spark plugs are not worn out and looks new then its time to check coil pack. The spark plug gets power to spark from coil pack.

3) The other thing to check in this case is the starter solenoid of the car. If the battery is charged and you start the car then it gives power to the starter to start the car. But if starter is faulty or not connected properly then car will not start.

4) The other thing to check in this case is fuel in the car. If there is fuel in the car then check the blockages in the fuel pump if the fuel pump looks proper then check the fuel filter above the fuel pump.

5) If all the above possibilities mentioned above checked out OK/perfect then it's a electrical issue and the wiring's in the car needs to be checked. The car gets power from the battery to get started. so the wires from battery needs to be checked one by one.



Thanks. keep updated for any more query.you can rate this solution and show your appreciation.

Sep 20, 2010 | 1993 Ford F250

1 Answer

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to many things have been done=wasting money.test the spark by remouving the plug wire put a1/4" bolt in the end of the wire hold it with an insulated pliers near the engine metal and have someone turn the keyas though starting.if you have a good stoung cracking spark ok.irf not the computer may not be activaitng the coils.+cam crank sensor no good. the cam sensor has been a big problem.probably find further info at the library.or have it towed to a sop.there are a lot of more complicated issues involved with a no start that need to be tested before throwing more parts at it.

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1 Answer

1998 Pontiac transport van wont start:


Well you hit all the major ones, could be crank position sensor, ignition module, a bad coil pack (it should have 3), you need to check that you have spark to each plug while the engine is turning over (!!!be careful as this will hurt if you get shocked!!!), this will rule out coil packs. if you have no spark to any plug your looking at a bad ingnition module (which is what the coil packs bolt to). Hope this gets you on the right track!

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