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Sticking solenoid, or ???


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reybo
User

Oct 10, 2010, 12:06 PM

Post #1 of 5 (2761 views)
Sticking solenoid, or ??? Sign In

This morning my '89 Isuzu Trooper, an otherwise excellent car, locked its solenoid in ON position, I think. Before I replace it, I'd like to hear others' thoughts.

Background. For a week, it failed to connect with the solenoid until moving the gear shift lever. (automatic trans, L4 SOHC engine.) "Failed to connect" defined as nothing happened in the starter circuit when the key was turned; no click.

I went to a battery dealer Thursday and learned this old Exide was 6.5 years old. I replaced it with a new one, the size recommended for the Trooper.

The problem went away until this morning, Sunday. I started the car and heard a small roar. Turned off the key and the starter continued to run. Got a wrench from the tool box but before I could loosen a battery terminal, the solenoid let go and the starter stopped.

I started the car again, then again, then again. No repeat of the problem.

The Trooper is going in for a radiator flush Monday. Should I have the solenoid replaced? So far as I know, it's original, 21 years old, 168,000 miles. Seen how many spins? 45,000 or so?

This is a $213 part even from Rockauto, costing way more than the starter it sits on. So I'm not replacing it unless necessary. The photo shows it can be disassembled and presumably rebuilt.

I'm familiar with rebuilding solenoids and starters. Did my first one on a '49 Plymouth in 1953. But I'm over 70 and my days under cars are over. So I'm listening to advice. Is replacing the costly solenoid essential, or should I begin by replacing the starter first and see if that fixes it?

personal info removed



(This post was edited by Hammer Time on Oct 10, 2010, 2:14 PM)


reybo
User

Oct 10, 2010, 12:20 PM

Post #2 of 5 (2757 views)
Re: Sticking solenoid, or ??? Sign In

Same guy. I went to other online parts suppliers beside RockAuto and found they sell starter w/solenoid brand new for $151 and rebuilt from $58 up. So RockAuto has a parts error with this part.

The best buy may be this remanufactured Bosch Starter-solenoid PART#:BSSR398XMFR#:SR398 priced in the $90s. Best because it has a 2-year warranty while others have just one.

So the answer is replace. Agree?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 10, 2010, 2:13 PM

Post #3 of 5 (2756 views)
Re: Sticking solenoid, or ??? Sign In


Quote
it failed to connect with the solenoid until moving the gear shift lever


You answered your own question in the second sentence. If moving the shifter corrects the issue, then you have a problem with the neutral safety switch.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



reybo
User

Oct 10, 2010, 7:39 PM

Post #4 of 5 (2743 views)
Re: Sticking solenoid, or ??? Sign In

You believe there's a way the neutral safety switch can cause the solenoid to remain energized when the ignition key is turned off?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 11, 2010, 2:23 AM

Post #5 of 5 (2732 views)
Re: Sticking solenoid, or ??? Sign In

Sure it's possible but I would expect it to be tested before replacing.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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