Starting issue

[LGAFF]

Having an issue with my 90

-Car starts fine; then I come out and car does not start, no cranking, dead silence.(I believe the fuel pump energizes).

-There is a voltage drop when I turn the key, but no clicking, nothing happens

-Had the battery checked: no issues 12.6 volats

-Checked the alt: outputting 13.8-14.1 volts; steady output

**If you jump start it, bang....starts right up and will run good for days

**Starter is new

[LGAFF]

Starter interupt relay?

[-=Jeff=-]

VATS?

[Dynomite]

Originally Posted by LGAFF

-Car starts fine; then I come out and car does not start, no cranking, dead silence.(I believe the fuel pump energizes).

-There is a voltage drop when I turn the key, but no clicking, nothing happens

-Had the battery checked: no issues 12.6 volats

-Checked the alt: outputting 13.8-14.1 volts; steady output

**If you jump start it, bang....starts right up and will run good for days

**Starter is new

When you jump start (from another car running) you are probably jumping with 13+ volts. I would say your starter solenoid is a bit sticky and does not move with less than 13+ volts. A voltage drop when key is turned but no clicking would suggest current is being applied to Solenoid coil but Solenoid is not moving. Or......you have some poor connections taking voltage (getting warm) reducing the voltage the starter Solenoid sees.

I may be missing this all together but just saying.

[LGAFF]

I am puzzled on this one; I will try driving with the other keys in hand...and also watch for the security light to address vats.

to me it seems the battery is not fully charged but it tests ok, will test in the morning. When I turn the key the volts drop close to the "8"

I replaced the cable to battery bolts today to see if that makes a difference.

Not sure, might swap the relay to make sure, I noticed the relay has the same symptoms as the stuck starter solenoid.

[Tyler Townsley]

This is the classic description of a 90-91 no start condition linked to the clutch switch, Check the problem section for suggested solutions including jumping the switch at the purple wire at the dash. The final fix is to leave it jumped there and deal with the start in gear or replace the switch with one that can handle the amperage.

Tyler

[LGAFF]

Tyler, would there be a volt drop if the clutch switch was not working?

[Tyler Townsley]

Originally Posted by LGAFF

Tyler, would there be a volt drop if the clutch switch was not working?

yes dash etc gets energized. the clutch sw gets hot and will stop current flow but sometimes the additional amperage can jump the sw points. thanks to some earlier troubleshooting by scot fabre, I believe, it was determined the sw was way undersized for the current flow. the whole ckt design was changed in 92.

tyler

[Z51JEFF]

I had a no start issue and ran a separate ground from the stater relay.Its hard to say if that fixed the problem,its only happened 3 time in 6 years but 2 of those times were in the last 6 weeks.The separate ground wire fix was from a suggestion someone got from Gordon Killebrew.I was able to eliminate the clutch safety switch before I did the ground mod.

[RICHARD TILL]

from experience i vote starter solenoid.