Idle and Braking Problems

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Sep 22, 2002 | 03:35 PM

Johnathan Thomas

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Idle and Braking Problems

I have a 1988 F-250 4x4 with a inline 6cyc (300). The brake lines all went bad so I replaced them all. (A long, aggrivating experience. Replace one and another pops.) Now, I have bled the brakes 3 times and the pedal will maintain pressure and brakes for a few hours and then straight to the floor again. Plus, the truck idles funny after it warms up. While it is warming up it runs like a champ, but as soon as it is warm it starts surging and it loses a lot of horsepower. Any suggestions would be great.

Thanks,
John

Sep 23, 2002 | 06:49 AM

Stephens

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Idle and Braking Problems

I just did my brakes, flushed the system, new lines for the front calipers and new calipers. Those lines are &%$# to get off, the little slotted tube wrenches won't do a thing to break the fittings loose, I ended up using vise grips. Check your fluid level 1st. As you suspect you have a leak somewhere. I'd look for any sign of fluid weaping, check the caliper also. If I found nothing, I'd suspect the booster.

Sep 23, 2002 | 06:57 AM

Stephens

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Idle and Braking Problems

For the idle and power problem, I had the same problem in my 88 recently, it ended up being a bad injector. I had no codes, it idled perfectly, missed like a &*% on acceleration. Ended up putting on a new coil (14 yrs is long enough for the OEM), rotor, cap, wires, plugs (a couple of weeks back), cleaned my IAC and plenum and then checked the compression on each cylinder which found it OK. I found #2 plug all fouled up and knowing all the others were OK and since my wires and cap were good that it must be fuel related. It made the ticking noise its supposed, but I replaced it anyways to ensure that the cylinder is getting fuel and that cured the problem. Last time I took my wife's van in, it cost me $310 for a new coil, so I don't mind putting extra nerw parts on it, you still come out cheaper.