20V MK1 Engine Swap i need help, im about to go insane!!!

monkeydemond · 04-23-2008, 09:32 PM

ok so i just got this mr2 and it has a silvertop, and it runs like crap.

problems are as follow:

-idles at 1500rpm's
-runs rough
-gets horrible gas mileage
-it smokes constantly, smoke pours out during fast acceleration (black smoke)
-whenever i use a turn signal, power windows, or apply brakes my volt guage dips down.
-check engine light is always on

i'm fairly mechanicaly incline but im not to familar with car electronics. any help would be helpful, maybe someone from central fla could help? i'll buy the beer!!!

TIA

Mista 2 · 04-24-2008, 06:23 AM

Have you run a diegnostics on it?

monkeydemond · 04-24-2008, 10:13 AM

man im gunna sound like a n00b, how do i do that?

Timon · 04-24-2008, 10:48 AM

You need to have a diagnostic machine to connect your ECU to, or you can bring it to a parts store. I believe Checkers does it for no charge.

nitrate · 04-24-2008, 11:00 AM

you can turn the idle doown if you want to. hi idle can be from many things being wrong. the gage will move when you turn on any thing in a MR2 they have the best amp gages of any cars i think. so thats working right. the smoke . that can from literly any thing on the motor. or in the motor. the cheek eng light can be rest N/p just have some one read the code first. i would start looking for a new motor befor you end up with to much of your time working out the lilttle problims just to find out you need piston rings.

monkeydemond · 04-24-2008, 11:07 AM

Quote:

Originally Posted by Timon

You need to have a diagnostic machine to connect your ECU to, or you can bring it to a parts store. I believe Checkers does it for no charge.

where is the diagnostic port? and what does it took like?

mr220v · 04-24-2008, 11:09 AM

Quote:

Originally Posted by Timon

You need to have a diagnostic machine to connect your ECU to, or you can bring it to a parts store. I believe Checkers does it for no charge.

This would be if it were an obd2 car. In your case, all you need to do is bridge T (or Te1) and E1 on your diagnostic connector. This will set the check engine light to blink out your codes.

If you don't have a diagnostic connector, you can ground pin Te1 on the ecu.

Do you have any pics of this car?

monkeydemond · 04-24-2008, 11:14 AM

Quote:

Originally Posted by nitrate

you can turn the idle doown if you want to. hi idle can be from many things being wrong. the gage will move when you turn on any thing in a MR2 they have the best amp gages of any cars i think. so thats working right. the smoke . that can from literly any thing on the motor. or in the motor. the cheek eng light can be rest N/p just have some one read the code first. i would start looking for a new motor befor you end up with to much of your time working out the lilttle problims just to find out you need piston rings.

i really dont think its the rings, it got tons of power. when i give it a rev it revs smooth, i just cant seem to figure out y its running so rich.

nitrate · 04-24-2008, 11:21 AM

the eng light will flass a number of times at ytou them paus. then flash difrent number of times paus. there can be more than one code so sit back and watch and count the number of flashes betwin paues.

muffinman · 04-24-2008, 11:22 AM

Black smoke means it has to be running rich. The diagnotic port is right next to the AFM do what mr220v said and check to see what code its giving it's probably an O2 sensor. Do a full tune up plugs,cap,rotor and wires. You might want to change your fuel filter if it hasn't been changed. After all that adjust your idle.

nitrate · 04-24-2008, 11:23 AM

black smoke is never a good thing. i dont know how much black smoke your seeing. did the car sit for a long time befor you got it ? it could just be burning out carbon build up. and most MR2 have great power befor they blow up

muffinman · 04-24-2008, 11:44 AM

Check the simple and cheaper stuff first before you start shopping for a new motor.

mr220v · 04-24-2008, 11:47 AM

I'm going to make a guess and say that when you pull codes, you'll get a code for afm (or map if you're on BT electronics), or for knock sensor. Possibly water temp or iac, but you're not saying you have the normal symptoms of a problem here.

O2 won't cause a CEL.

Also, is the starter slow to turn over?

muffinman · 04-24-2008, 12:40 PM

mr220v in the OBD1 is't a code 5 a faulty O2 sensor circuit or faulty O2 sensor or am i wrong?

mr220v · 04-24-2008, 12:56 PM

I don't know what it is on the 16v ecu, but with newer ecu's, including the 20v, it's code 21.

mr220v · 04-24-2008, 02:18 PM

From the photos you sent me, I noticed that your IAC valve is unplugged. There's the reason for your CEL right there.

monkeydemond · 04-24-2008, 07:53 PM

ok so i ran the diagnostic and heres what it gave me,

2-1-2-4-2-5-3-3-4-1

after that it repeats.

i pluged in the AIC and it ran alittle better, but still not how it should. are there any place/people in the central florida area that maybe i could take it to? i kinda feel in over my head with this car.

kazin1111 · 04-24-2008, 09:47 PM

Reset your ECU and see what codes you pull up. I don't know how to do this on a Toyota but i'm sure someone will post really fast on how to do it. Usually involves unplugging the battery for 20-30 minutes and then plugging it in and letting the car idle for a long time. Or maybe you are supposed to drive the

out of it. I don't exactly know...

I do know. if you just plugged in a sensor that has been disconnected, then your ECU has mapped your A/F with a bad setting, and need to be remapped, IE Reset your ECU.

Mista 2 · 04-25-2008, 05:29 AM

In my experiance just unplug your battery and put your foot on the brake.
those codes are 21 24 25 33 41.
as MR220V said 21 is your O2 but your car wont run bad from that. i didnt have an O2 and mine ran fine.

kazin1111 · 04-25-2008, 09:06 AM

but not having an 02 usually makes your car run way too rich. I would still reset your ECU and see if some of those codes clear. I had a crx with a bswap that was running really bad and throwing codes. I reset the ecu and It dropped 4 of those codes and started running a whole lot better.

04-23-2008, 09:32 PM	#1 (permalink)
monkeydemond No Skills Join Date: Apr 2008 Location: detona, fl Posts: 19 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	i need help, im about to go insane!!! ok so i just got this mr2 and it has a silvertop, and it runs like crap. problems are as follow: -idles at 1500rpm's -runs rough -gets horrible gas mileage -it smokes constantly, smoke pours out during fast acceleration (black smoke) -whenever i use a turn signal, power windows, or apply brakes my volt guage dips down. -check engine light is always on i'm fairly mechanicaly incline but im not to familar with car electronics. any help would be helpful, maybe someone from central fla could help? i'll buy the beer!!! TIA

04-24-2008, 11:21 AM	#9 (permalink)
nitrate All the skills Join Date: Nov 2007 Posts: 439 Thanks: 0 Thanked 6 Times in 4 Posts iTrader Rating: (0/0% )	the eng light will flass a number of times at ytou them paus. then flash difrent number of times paus. there can be more than one code so sit back and watch and count the number of flashes betwin paues. Attached Thumbnails

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

04-24-2008, 06:23 AM	#2 (permalink)
Mista 2 Cage Fighter Join Date: Nov 2006 Location: Adelaide, Australia Posts: 463 Thanks: 16 Thanked 21 Times in 21 Posts My Google Map iTrader Rating: (0/0% )	Have you run a diegnostics on it?

04-24-2008, 10:13 AM	#3 (permalink)
monkeydemond No Skills Join Date: Apr 2008 Location: detona, fl Posts: 19 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	man im gunna sound like a n00b, how do i do that?

04-24-2008, 10:48 AM	#4 (permalink)
Timon MR2 MKI AW11 Join Date: Feb 2008 Location: Utah Posts: 669 Thanks: 13 Thanked 42 Times in 37 Posts My Google Map iTrader Rating: (1/100% )	You need to have a diagnostic machine to connect your ECU to, or you can bring it to a parts store. I believe Checkers does it for no charge.

04-24-2008, 11:00 AM	#5 (permalink)
nitrate All the skills Join Date: Nov 2007 Posts: 439 Thanks: 0 Thanked 6 Times in 4 Posts iTrader Rating: (0/0% )	you can turn the idle doown if you want to. hi idle can be from many things being wrong. the gage will move when you turn on any thing in a MR2 they have the best amp gages of any cars i think. so thats working right. the smoke . that can from literly any thing on the motor. or in the motor. the cheek eng light can be rest N/p just have some one read the code first. i would start looking for a new motor befor you end up with to much of your time working out the lilttle problims just to find out you need piston rings.

04-24-2008, 11:22 AM	#10 (permalink)
muffinman U-P-G-R-A-Y-E-D-D Join Date: Jan 2008 Location: Sunny South Florida Posts: 5,881 Thanks: 53 Thanked 283 Times in 272 Posts Blog Entries: 1 My Google Map iTrader Rating: (2/100% )	Black smoke means it has to be running rich. The diagnotic port is right next to the AFM do what mr220v said and check to see what code its giving it's probably an O2 sensor. Do a full tune up plugs,cap,rotor and wires. You might want to change your fuel filter if it hasn't been changed. After all that adjust your idle.

04-24-2008, 11:23 AM	#11 (permalink)
nitrate All the skills Join Date: Nov 2007 Posts: 439 Thanks: 0 Thanked 6 Times in 4 Posts iTrader Rating: (0/0% )	black smoke is never a good thing. i dont know how much black smoke your seeing. did the car sit for a long time befor you got it ? it could just be burning out carbon build up. and most MR2 have great power befor they blow up

04-24-2008, 11:44 AM	#12 (permalink)
muffinman U-P-G-R-A-Y-E-D-D Join Date: Jan 2008 Location: Sunny South Florida Posts: 5,881 Thanks: 53 Thanked 283 Times in 272 Posts Blog Entries: 1 My Google Map iTrader Rating: (2/100% )	Check the simple and cheaper stuff first before you start shopping for a new motor.

04-24-2008, 11:47 AM	#13 (permalink)
mr220v Beams Owners Group Join Date: Mar 2006 Posts: 2,529 Thanks: 13 Thanked 176 Times in 147 Posts iTrader Rating: (11/100% )	I'm going to make a guess and say that when you pull codes, you'll get a code for afm (or map if you're on BT electronics), or for knock sensor. Possibly water temp or iac, but you're not saying you have the normal symptoms of a problem here. O2 won't cause a CEL. Also, is the starter slow to turn over?

04-24-2008, 12:40 PM	#14 (permalink)
muffinman U-P-G-R-A-Y-E-D-D Join Date: Jan 2008 Location: Sunny South Florida Posts: 5,881 Thanks: 53 Thanked 283 Times in 272 Posts Blog Entries: 1 My Google Map iTrader Rating: (2/100% )	mr220v in the OBD1 is't a code 5 a faulty O2 sensor circuit or faulty O2 sensor or am i wrong?

04-24-2008, 12:56 PM	#15 (permalink)
mr220v Beams Owners Group Join Date: Mar 2006 Posts: 2,529 Thanks: 13 Thanked 176 Times in 147 Posts iTrader Rating: (11/100% )	I don't know what it is on the 16v ecu, but with newer ecu's, including the 20v, it's code 21.

04-24-2008, 02:18 PM	#16 (permalink)
mr220v Beams Owners Group Join Date: Mar 2006 Posts: 2,529 Thanks: 13 Thanked 176 Times in 147 Posts iTrader Rating: (11/100% )	From the photos you sent me, I noticed that your IAC valve is unplugged. There's the reason for your CEL right there.

04-24-2008, 07:53 PM	#17 (permalink)
monkeydemond No Skills Join Date: Apr 2008 Location: detona, fl Posts: 19 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	ok so i ran the diagnostic and heres what it gave me, 2-1-2-4-2-5-3-3-4-1 after that it repeats. i pluged in the AIC and it ran alittle better, but still not how it should. are there any place/people in the central florida area that maybe i could take it to? i kinda feel in over my head with this car.

04-24-2008, 09:47 PM	#18 (permalink)
kazin1111 Weak Skills Join Date: Feb 2008 Posts: 122 Thanks: 11 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	Reset your ECU and see what codes you pull up. I don't know how to do this on a Toyota but i'm sure someone will post really fast on how to do it. Usually involves unplugging the battery for 20-30 minutes and then plugging it in and letting the car idle for a long time. Or maybe you are supposed to drive the out of it. I don't exactly know... I do know. if you just plugged in a sensor that has been disconnected, then your ECU has mapped your A/F with a bad setting, and need to be remapped, IE Reset your ECU.

04-25-2008, 05:29 AM	#19 (permalink)
Mista 2 Cage Fighter Join Date: Nov 2006 Location: Adelaide, Australia Posts: 463 Thanks: 16 Thanked 21 Times in 21 Posts My Google Map iTrader Rating: (0/0% )	In my experiance just unplug your battery and put your foot on the brake. those codes are 21 24 25 33 41. as MR220V said 21 is your O2 but your car wont run bad from that. i didnt have an O2 and mine ran fine.

04-25-2008, 09:06 AM	#20 (permalink)
kazin1111 Weak Skills Join Date: Feb 2008 Posts: 122 Thanks: 11 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	but not having an 02 usually makes your car run way too rich. I would still reset your ECU and see if some of those codes clear. I had a crx with a bswap that was running really bad and throwing codes. I reset the ecu and It dropped 4 of those codes and started running a whole lot better.