1985 Toyota Celica GTS overdrive stopped working

Asked by Jun 20, 2012 at 08:33 AM about the 1985 Toyota Celica GT-S Convertible

Question type: Maintenance & Repair

I had the valve cover off adjusting valves and now the overdrive doesn't work.  Thought I might have pinched a wire or knocked a terminal loose but no.  I see there are three inputs to the relay, temp switch, O/D switch, and the cruise control computer.  There is power going to the temp switch and the O/D switch.  Not sure if the temp switch is working though and I can't find the relay.  Cruise control seem to be working so it's getting it's speed sensor inputs.  Any hints

7 Answers

1,615

maybe the overdrive switch's clip got loose disconnecting it

No it's tight and the switch turns the light on so it's working. I was thinking it might have been the temperture switch because that's near the valve cover but it's ok too.

1,615

how long has it been since your last transmission oil change ?

I just got the car so possible a while.

17,725

Idk becuase mine is a 5speed but are there any vaccum lines to the transmission that may have been disconnected?

I wish, that would be a simpler fix. It's all electronic. The only vacum lines are to the emmsions controls. I think I'm doomed to shooting wires to see where I'm not getting power from.. I did find a technical serve bulletin that talks about fourth gear not kicking out that if the electronic were working there's a check valve in the valve body in the transmission. Then it'll be a call to Amco for an appointment.

It was the overdrive switch on the transmission. I was on another forum and someone had the same problem but used one from a volvo. Appearently vlvo, Mittubeshee and a couple others used the same transmission just configured them to their cars. Toyota wanted almost $200 for it. I found the volvo one on ebay for $65 and just spliced the old connector on to it. Works like a champ. Not usre why it went out after I adjusted the valves though. Probabely coincidence.

Your Answer

Add photo

Related Questions

  • Intermittent Starting Problem with 1985 Toyota Celica 20 answers

    My 1985 Toyota Celica beauty is just about to turn over to 40K miles. Overall she is great, but for the last two months she has had an intermittent problem starting that neither me nor my mechanic can...

    1985 Toyota Celica GT Hatchback

    -

    Maintenance & Repair

  • 1985 Celica GTS 1 answer

    Searching for several; parts: outside power mirrors that work, factory radio that works power antenna that works, power top pump that works. call me at 866-809-7500 or email me at jamesformanek@yahoo....

    1985 Toyota Celica

    -

    Maintenance & Repair

  • how long can a toyota celica last 4 answers

    i am looking to buy a 2001 toyota celica gts with 240000 yes or no>>>???

    2001 Toyota Celica GTS

    -

    Maintenance & Repair

  • aug 1987 toyota celica gt 1 answer

    i have a 1987 toyota celica and need to know is a 89 celica motor will work

    1987 Toyota Celica GT Coupe

    -

    Maintenance & Repair

  • 1985 Celica GTS 5 answers

    To everyone who owns a Celica GTS I am interested in buying your car preferably Black and automatic. Low miles would be nice... call me at 866-809-7500.

    1985 Toyota Celica GT-S Convertible

    -

    Shopping & Pricing

Celica

Looking for a Used Celica in your area?

CarGurus has 325 nationwide Celica listings starting at $1,799.

ZIP:

Search Toyota Celica Questions

Toyota Celica Experts

#1 dandyoun
dandyoun
Reputation 580
#2 tenspeed
tenspeed
Reputation 380
#3 joedynamo
joedynamo
Reputation 310
View All

Related Models For Sale

Used Toyota Corolla
758 Great Deals out of 74,633 listings starting at $1,991
Used Honda Civic
482 Great Deals out of 81,846 listings starting at $558
Used Ford Mustang
334 Great Deals out of 45,523 listings starting at $2,000
Used Toyota Supra
43 listings starting at $43,997
Used Toyota Camry
857 Great Deals out of 90,788 listings starting at $1,200
Used Honda Accord
696 Great Deals out of 83,201 listings starting at $500
Used Chevrolet Camaro
149 Great Deals out of 34,916 listings starting at $1,995
Used BMW 3 Series
1,071 Great Deals out of 34,811 listings starting at $900

Used Cars For Sale

2005 Toyota Celica For Sale
19 listings starting at $3,995
2004 Toyota Celica For Sale
26 listings starting at $3,450
2003 Toyota Celica For Sale
54 listings starting at $2,800
2002 Toyota Celica For Sale
52 listings starting at $1,799