shawns88

I recently blew a head gasket lask week end and replaced it my self, it ran great before the head gasket blew and it still runs great now, but it seems to be lacking power, my gramps has an 87 yota with 22re 5 speed and it has more nuts than my truck. any ideas?
o btw my yota is 1988 22re with 5 speed.

shawns88

58 views and nothing?

Tubbyfatty

Timing.

yayfortrees

x2 on the ignition timing. Make sure to follow the procedure by jumping the two terminals in the diagnosis harness. It should tell you on the sticker under the hood.

Good luck!

shawns88

ok thanx, i am going to check it later today.

desertcox05

ck valve adjustment too

shawns88

i dont thinks its that, it runs fine it idles at about 1k, just seems to be way under powerd, my truck hasitates do go up my hill in 3rd gear doing 30... and my gramps truck gos up at 50 in fourth gear and his need thotle sensor.

shawns88

i just looked under my truck and saw that my o2 sensor was completly off and wraped around the frame. could that be the problem and is there more than 1 o2 sensor?

Seanwain

Test the Catalytic Converter anti-freeze burned in the combustion chamber will clog one up quick, fast and in a hurry!

yayfortrees

Some trucks run two O2 sensors, some only run one. You'll just have to check it. It's possible that the O2 sensor being unplugged could affect the power, but I've also read where people have replaced the exhaust and didn't even hook up the O2 sensor.

Seanwain made a very good point about checking the cat. To check that, can you just feel how much air is coming out the exhaust, or do you have to disconnect it?

I'm still placing my money on the ignition timing.

Keep us posted!

Seanwain

You have to drill a small hole on either side of the Catalytic converter and test the pressure in front and the pressure behind the cat. If there is a significant difference 10psi in front and 3psi behind then the cat is clogged. Most muffler shops will test them for free although will over charge you to replace them. You can get a Magniflow high flow cat direct replacement bolt on for about $100.00 on eBay (California emissions is around $200.00).

yayfortrees

Oh wow. Do you plug these holes after testing? What do you use to plug them? That's really cool, I haven't yet heard of this technique. Good to know!

Seanwain

Just a small tack with the welder will seal them back up. Haven’t actually done this myself but read about it a few months ago when I was looking to replace my catalytic converter. I ended up just buying a new one considering my truck 320,000 miles and it had never been changed. When I took the old one off you could only see a speck of light about the size of a dime through it the new one you could see light for the whole diameter of the opening. Made a big difference in power and in mpg the truck ran a little cooler too. Just test it if you’re unsure.

Seanwain

http://www.youtube.com/watch?v=IzyvL5tQLzU

shawns88

its straitpiped into a hallow cat

shawns88

the plug wires and cap are almost new, may need plugs but i cleand them up a bit. But would just the o2 sensor make it loose that mutch power? because it idles awsome and idles at 1k, (not shure if thats good or not). and then my gramps has the same motor and tranny and it has way more nut than my truck?

thook

I'd slow down a bit here. Chances are if the truck was running fine before the headgasket replacement, the problem lies in something that you had to tinker with during the replacement. Namely ignition timing.

The '88 only had one O2 sensor. And, that could affect power. Did you plug it back in? And, did it change anything? Have you checked you're timing? Timing being off is real common after a rebuild, you know.

HeavyD

I blew a head gasket and it ran like a dog after it was fixed. I had to replace the Cat and O2 sensor to get it to run right again. Coolant in the exhaust is a common item for poisoning the Cats. Don't just gut it either, replace it. You may look at the EGR valve also, which can get gunked up by the coolant.

thook

<<blink!!>> Good points!

shawns88

Before i did the head gasket it did the same thing, but it idled great and seemd to run good.

the o2 sensor i pluged in, its just sitting over the top of the frame with a pice of exhaust welded to it, i will check the timing as soon as the rain stops,

how would i put the o2 sensor back in? its all strait piped so theres no hole for it, and does it go behind the cat or infront?