Car runs like crap, spits, sputters etc! HELP

[Z'mnypit]

Ok, a little backgound on the car. I bought it with a BHG. got that fixed and ran good for a couple days then I washed under the hood with some greasedlighting to clean it up a bit. Well needless to say that was a bad idea. Everysince then its ran like pure crap. Spits, sputter,no power, backfiring idles fine, want rev past 2500rpm even when it does rev that high its all it will do to get there. I have one SES code being 31 for the MAF. Im pretty sure that isnt the problem though beings the code was there the couple days it ran good.

Ive swapped out all plugs with new ones, changed air filter, cleaned all electrical plugs with start fluid and still runs like crap. Timing is right at 10-12* everything is lined up right. Then again it ran fine for two days with nothing being changed other then washing under the hood.

Yesterday, I found a vacuum leak right at the TB where it bolts up to the intake. Replaced that and the fuel filter today and still runs like crap. Im all out of ideas and cant think of anything else to try since Im new to these cars.


The car is an 87, 5spd, turbo.

Any suggestions?

[west_side_supra]

check your spark plugs/wires, then make shur there all plugged in, check you coil pack harness wires because mine melted on me and i had to rewire it, check and little hard for any vacume leaks, test your igniter, because it really sounds like your missfiring.

but your timeing if i recall should be 15 i think, dont take my word im to lazy to look at the motor in my garage, but the 2nd marking from the left is the one you want it at.

also check you cam position sensor wires. mine where melted there, although i was just getting a code 14 and 52, but it ended being the coil pack harness, i mixed a power and ground, its hard to make out them damn faded colors, there green then barley lighter green, then another green.

[Toyota87Supra]

I did the same thing with my car, and was having the same problems, and was getting the same code. I replaced my MAF sensor and the car ran fine after that. You probably sucked the cleaner through your air filter and it got on the sensor.

[j3pz]

the ignition timing should be 10, some people run 14-15

http://www.cygnusx1.net/Supra/TechTi...ng_timing.aspx

[IHateHacks]

Base ignition timing should be 10 degrees BTDC not 15. That is base igniton timing, the ECU will provide an electronic advance and, under boost, you do not want more than stock advance.

You definatly messed something up when you "washed" the engine bay. Did you use a power washer, or what?

You probably sprayed the coil packs or the MAF or the igniter and fubar'd it. Time to start testing with a multimeter, do you own a TSRM? If not, there is a link in the sticky's in this forum.

You are never suppost to wash the engine with anything. You want a clean engine? Take it apart and rebuild it, cleaning the parts as you take them off. Looks like you learned the hard way. Sorry.

[Z'mnypit]

ALright, so next Ill check the MAF. Ill check on ebay for a new one.

Guess tommorow Ill break out the multimeter and start checking the MAF, igniter, coil packs and anything else I can find.

I sprayed it down with greased lighting and then sprayed it off with a water hose.

I do own a tsrm. Any other suggestions?

[IHateHacks]

Originally Posted by Z'mnypit

and then sprayed it off with a water hose.

Thats is a big no no.

I find it hard to believe you didn't know you aren't suppost to do that.

[j3pz]

i have a suggestion: next time you decide to wash the hood, take it off...

/smartassness

[redmaro]

Good luck buying a new MAF sensor they cost like $400+.

[Toyota87Supra]

go to supramania and ask for a maf sensor i got one for 50 bucks works great... and it got shipped in 1 day