4A-GE MK1 Engine some idle problems here to

t1bmxrder · 04-17-2007, 10:36 PM

my car has been perfenct for a while now no problems but today it was acting funny. when ever i had to stop red light, stop sign, ect. the revs would drop to like 500 and it would seem that that car was not running so i give it some gas to get it to start and it would be fine. it kept on doin that. i have no idea whats wrong with it. i havent replaced anything. other then the thermostat like 3 months ago. what do you gusy think.
86 na mr2

Ben · 04-17-2007, 11:14 PM

A Simple Start And Basic Maintenance Item Would Be To Clean The Throttle Body. Carbon Gets Built Up And Can Keep The Throttle Plate Stuck Closed = Low Idle.

blazer9903 · 04-18-2007, 09:33 AM

if cleaning doesn't solve it, check the air filter; maybe replace fuel filter.

t1bmxrder · 04-18-2007, 11:58 AM

ok i ordered a new fuel filter. can you tell me were it is and how do i replace it.

blazer9903 · 04-18-2007, 12:12 PM

You should find it on the firewall behind the engine; you'll see the AC canister to the left and the fuel filter is next to it on the right. Disconnect the neg. battery cable, there are 2 connections on the top and bottom of the filter and a small bracket holding it to the firewall. hold a thick rag around the fuel lines when you disconnect them as gas may spray out (remove slowly) - you'll probably want to get under the car to remove the bottom one. Try to keep the fuel lines pointing up so less fuel will leak out all over you. (smoking not recommended when doing this) - remove filter from bracket, put new filter in and reconnect the lines. I know last time I replaced mine I had to hold the throttle to regain good fuel pressure when starting it. Just hold the gas about 25-50% down when you start it until it fires up. It has been a few years since I did this on an MK1 but I'm pretty sure thats all there is to it. I'm sure someone will offer corrections if I missed anything.

t1bmxrder · 04-19-2007, 08:13 PM

i think i found the problem. i thin its my mass airflow senson. i hit it and the iddle jumped. then i gave it some gas and it was fine. so i think i need a new mass air flow senso

04-17-2007, 10:36 PM	#1 (permalink)
t1bmxrder R.I.P DIRTWOOD Join Date: Nov 2005 Location: pawtucket, rhode island Posts: 34 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	some idle problems here to my car has been perfenct for a while now no problems but today it was acting funny. when ever i had to stop red light, stop sign, ect. the revs would drop to like 500 and it would seem that that car was not running so i give it some gas to get it to start and it would be fine. it kept on doin that. i have no idea whats wrong with it. i havent replaced anything. other then the thermostat like 3 months ago. what do you gusy think. 86 na mr2

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04-17-2007, 11:14 PM	#2 (permalink)
Ben Same In The End Join Date: Aug 2006 Location: Oceanside, CA / Reno, NV Posts: 4,274 Thanks: 20 Thanked 309 Times in 284 Posts My Google Map iTrader Rating: (16/100% )	A Simple Start And Basic Maintenance Item Would Be To Clean The Throttle Body. Carbon Gets Built Up And Can Keep The Throttle Plate Stuck Closed = Low Idle.

04-18-2007, 09:33 AM	#3 (permalink)
blazer9903 No Skills Join Date: Apr 2007 Location: St. Louis, MO Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts My Google Map iTrader Rating: (0/0% )	if cleaning doesn't solve it, check the air filter; maybe replace fuel filter.

04-18-2007, 11:58 AM	#4 (permalink)
t1bmxrder R.I.P DIRTWOOD Join Date: Nov 2005 Location: pawtucket, rhode island Posts: 34 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	ok i ordered a new fuel filter. can you tell me were it is and how do i replace it.

04-18-2007, 12:12 PM	#5 (permalink)
blazer9903 No Skills Join Date: Apr 2007 Location: St. Louis, MO Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts My Google Map iTrader Rating: (0/0% )	You should find it on the firewall behind the engine; you'll see the AC canister to the left and the fuel filter is next to it on the right. Disconnect the neg. battery cable, there are 2 connections on the top and bottom of the filter and a small bracket holding it to the firewall. hold a thick rag around the fuel lines when you disconnect them as gas may spray out (remove slowly) - you'll probably want to get under the car to remove the bottom one. Try to keep the fuel lines pointing up so less fuel will leak out all over you. (smoking not recommended when doing this) - remove filter from bracket, put new filter in and reconnect the lines. I know last time I replaced mine I had to hold the throttle to regain good fuel pressure when starting it. Just hold the gas about 25-50% down when you start it until it fires up. It has been a few years since I did this on an MK1 but I'm pretty sure thats all there is to it. I'm sure someone will offer corrections if I missed anything.

04-19-2007, 08:13 PM	#6 (permalink)
t1bmxrder R.I.P DIRTWOOD Join Date: Nov 2005 Location: pawtucket, rhode island Posts: 34 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	i think i found the problem. i thin its my mass airflow senson. i hit it and the iddle jumped. then i gave it some gas and it was fine. so i think i need a new mass air flow senso