Question about 1990 Ford Thunderbird

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Looking for a vacuum line off the manifold on a 1990 ford tbird for a brake booster.

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Look at the base of the back of the carb, should be a 1/2 " tube , some are also on the manifold in same general area...

Posted on Sep 05, 2009


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1 Answer

Loss of power breaks

Your power brake booster went out or the one way check valve in the vacuum line going to the booster from the intake manifold

Jan 08, 2012 | 1990 Buick Riviera

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The line that connect from the intake to the brake booster

This is a vacuum line. It produces vacuum to the brake booster which in turn makes it easier for you to press the brake pedal to stop.

Feb 09, 2011 | 1998 Ford Contour

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I have a 1990 Ford F250 with the 7.3 diesel. When braking, the pedal pushes in hard but can't stop very easily. I changed the master cylinder and bled all the lines, but still no difference. I was...

Toyota93 man,
I have the same problem with my 97 f-250 right now, same engine. I just replaced the booster and it didn't solve the problem. Obviously we are losing the vacuum somewhere. Check your vacuum lines for cracks as that is the cheapest. also the check valve on the booster itself. The vacuum line from the booster goes to a "vacuum tree" "vacuum solenoid"? I dont know, no one can tell me. Not even the ford dealership. but its mounted on top of the wheel well and it has 4 vacuum hoses coming off of it. The largest hose then goes to a vacuum pump on top of the power steering pump. That is my next change. I'll let you know if that fixes it. Let me know if you get an answer.

Feb 02, 2011 | Ford F-250 Cars & Trucks

2 Answers

Where is the brake booster vacuum line on the 89 toyota camry?

Booster line will attach to back side (firewall side ) of booster chamber.

Should find a metal elbow coming out of the booster chamber that the vacuum line will slip over.

When you look at the booster chamber from the front, the location of the line should be at approx. 9 o'clock (as if looking at a clock dial)

Jan 24, 2011 | 1989 Toyota Camry

1 Answer

Hard brake petel need to know the inch pounds for the vacumpump

Make sure you have a secure vacuum line from intake manifold to booster. Hard brake pedal is a lack of vacuum to booster or a leaky diaphragm in booster.

Oct 17, 2010 | 1985 Ford F350

2 Answers

Engine increases rpm when brake pedal is depressed

Inspect brake booster vacuum line from engine intake to brake booster for leaks also inspect brake booster check valve, more than likely your brake booster is causing a vacuum leak to your Intake thus leaning mixture wich increases idle rpm

Apr 03, 2010 | 1990 Toyota Pickup

3 Answers

No vaccum on brake booster inlet

make sure the vac line is connected to the intake if so replace one way valve at booster

Jan 06, 2010 | 2005 Ford F-150

1 Answer

Vacume line

This is the power brake booster vacuum line, the little round thing is a vapor separator to keep gas from entering the brake booster and destroying the rubber diaphragm, the line goes to the intake manifold near the rear of the manifold, the length of the vacuum line is a good guide to where it hooks up, if you run the engine you will hear a very loud vacuum leak to say the least.

Oct 22, 2008 | 1995 Pontiac Bonneville

1 Answer

1990 ford f250

I believe the connector you are inquiring about is where your vacuum connections come into play. If you have power brakes this is where the larger line hooks up from your power brake booster. The others will be specific to your engine configuration. Any leaky lines will adversely affect your vehicles performance and idle characteristics.

Aug 02, 2008 | 1990 Ford F250

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