TH700R4 from a 1986 4x4 6,2 diesel

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TH700R4 from a 1986 4x4 6,2 diesel

Home > Discussion Forum > Mechanic's Corner - Transmissions

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All Messages in Thread	Author	Date
TH700R4 from a 1986 4x4 6,2 diesel	Martin	9-12-06
Hi Guys greetz to you all hope that someone can help me. I am sittung in europe and my TH700 in my Blazer quited working. ther is no friction in forward or reverse. no burnt oil or any noise it just stopped working during highwayuse around 45 miles per hour, enigne goes up and car stops slowly. foamy oil.. now noe foam in oil and any torque.. Need some help for the troubleshooting... ideas waht is good to repai an upgrade? it has a 4 plug cable on the left side rear conected? and it is 4 speed automatic.. Is the oil pump gone or is the band gone? need help THX Martin
Re: TH700R4 from a 1986 4x4 6,2 diesel	mike e	9-13-06
Don't know much about diesel but Tranny maybe controlled by vacuum. Diesel does not make vacuum so they use a small pump to get vacuum.Check around for a small pump that makes vacuum,it may not be working and causing problems with tranny. MIKE
Re: TH700R4 from a 1986 4x4 6,2 diesel	left	11-4-06
TH700R4's are controlled by the TV cable which is directly linked to your throttle in a gas application. Now the diesel's were controlled all internally with a check valve in place of the electronics. The electronic plug litterally does nothing in your case. Take it to a tranny shop or start checking it out yourself, I would guess the torque converter is probably bad.
Re: TH700R4 from a 1986 4x4 6,2 diesel	john	11-15-06
May blaizer just stopp to i split the th but that was god but the converter is gon