My Goldsmobile might be done...

[Ross Love]

Thanks, Serge. Ill report back with an update when I have it.

[Ross Love]

Update:

Replacement ECU from 1995 Bonneville - Not solving issue. I put it in today, fans still come on when I put the key to the start position. The car cranks, putts a little when I put the gas on - but wont idle.

The ECU from my car was a remanufactured item, my mom had replaced it years ago. But since I know these things fail frequently, I went ahead and tried another one.

I'm going to Harbor Freight right now because they sell a fuel pressure guage/ tester. Hopefully it will work on my car.

Any other ideas or things I can check? I leave for 2.5 months of work on Sunday in Alaska, and I would like to have it running tomorrow, any input on something else it could be would be helpful!

WHat about the coil packs? Are those worth taking in and getting bench tested????

I will take any advice...

Thanks serge.

[Ross Love]

To add to the above post: Fuel pump is priming. I'll report back about fuel pressure if this unit I'm going to buy is the correct one.. I'm looking for 4X PSI correct?

[Ross Love]

Update:

Fuel gauge was not built for GM cars. No dice.

Any ideas? I'm running low on both time and money.

[serge_saati]

Check the CKP sensor for proper operation. Rotate engine and check voltage pulse.
And also check coil pack's input and output resistance.
Input (connected to ECU): 0.5-0.9 ohm for the 3 coils.
Output (connected to plugs): 5K-10K ohm for 3 coils @ 70-80°F.
Then check MAP, IAT and MAF sensor. Then EGR and PCV system. Then upstream O2 sensor.

No check engine light?

[Ross Love]

Okay, I should be able to pull the IAT, MAF and O2 sensor pretty quick and run them to Autozone to bench test.

I have to pull the crank pully to get to the crank position sensor right? Do you know off the top of your head whether or not I will need any special tools to do this? Or if I need to do anything like remove the engine mount on that side or anyting? I've got the Haynes repair manual, but its not a whole lot of help, it covers years 85-99 or so and is kind of ambiguous.

Also, do you know if the MAP sensor is located on the firewall with a vacuum hose going to it? My manual says it could be in a couple different locations, and doesn't give specifics.

And also, how might I go about checking the PCV valve and EGR? I believe the PCV is located here:



This is just a one way check valve right?

Thanks, Serge.

[serge_saati]

You don't need to remove the belt to remove the CKP sensor. Nor remove engine mount. Just use the socket wrench to unbolt it. You should remove it from the bottom.
3800 engine have 2 CKP sensor.

On early 3800 engine, the MAP sensor is located in front of the alternator, at right of intake manifold. There's no hose.

Yes, the PCV valve is here, under the MAP sensor. Yes, it's a one way check.

About the EGR system, I suggest you to check DPFE sensor instead of EGR valve. Cause it usually fails more often than valve. I don't know on GM, but on Ford it fails often.

[razr_88]

i would get the codes if it is at all possible from the car... even if you weren't able to get a stable idle for long the computer is your friend. really it is. your car probably has the OBD2 DLC. Autozone uses an OBD2 code reader. that is not compatible with your system. you need a real scan tool. I would ideally recomend a GM techI or TechII but any otc, snap-on, vetronix should do just fine. if this isn't what you have if you have a different one heres a GREAT website to find out http://www.troublecodes.net/GM/