7mge running poorly...suggestions?

[2genfun]

so here the story...i blew a head gasket, sent the head out and got it resurfaced and checked for cracks. the heads good. put it all back together and i guess the distributor was off a tooth. although it ran very strong at idle it had a funny prrrrrr...blip, blip, prrrr. and it was running at 25 degrees advance timing. so i rechecked the timing found out the cams were both off a tooth. now timing is perfect no bliping from the distributor and car runs at 10 degrees as indicated by the hood diagram (and timing light). when cranked up it would run at 1400 rpm. so i checked the idle screw and got the idle back down to about 750. So heres the problem. When cold the car bogs down under throttle with no misfire basically just making no power. when hot it runs better but u can still feel as though its lacking power. what puzzles me is that if i advance the distributor a tooth it runs very stong again but then has the bliping and wont idle. its mind baffling so any suggestion ill see if they work. thanks

[cre]

First off, the idle screw is a legacy component and not to be used on any of the 7M vehicles. If you have to adjust it to get a consistent idle then you haven't yet found the problem.

Second, have you checked for any diagnostic codes?

Third, when setting the mechanical timing did you check to make sure that the #1 piston is at TDC when the indicator on the balancer says 0?? The rubber in the balancer can twist as it ages putting the 0? mark off more than 10?.

Fourth, when setting the ignition timing, did you have the diagnostic jumper in place?

Fifth, have you tested the ISC valve (electrical and mechanical) and it's plumbing?

Sixth, I dunno what's with the counting.... Started with one and just had to go as high as I could (pathetic, I know).

[2genfun]

lol all good. had the jumper in. #1 was at tdc. havent checked for codes yet. And no i havent tested the isc valve because i dont know what that is.

[cre]

Originally Posted by 2genfun

havent checked for codes yet.

Always start with checking codes. Most of the diagnostic errors which set codes in the memory don't cause the check engine light to some on... your entire issue could be detailed and waiting for you to stop wasting time and just read.

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

Originally Posted by 2genfun

And no i havent tested the isc valve because i dont know what that is.

Idle Speed Control Valve (ISCV or ISC valve).

More reading:
http://www.cygnusx1.net/Supra/Librar...ction=FI&P=106


Did you calibrate the TPS when you put everything back together?

Is the A/C system intact?

[Sonyps307]

Sound like the TPS needs to be calibrated. Check codes if u have code 51 the tps needs calibration.

[2genfun]

so finally got a second to check the codes....and i got none. it blinks quickly non stop. but still runs like its lacking power. now what smart people??? oh and yes the idle valve makes ticka ticka ticka when i shut it off.