Question about Toyota Pickup

1 Answer

Have check engine light coming on, 1988 toyota pickup, 22re engine, trouble code 71 EGR system. the EGR Valve is ok & working. IT also Efecks the temperature sometimes. Where shoud I look next?

Posted by on

  • toycruise42 Jul 26, 2009

    I,m sorry I should have specified that my toyota is fuel injected . the diagram and components you sent were for a carbed engine.


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 1,959 Answers

The Thermo Sensor valve would be the next place to look. Since the EGR valve is ok, and your experiencing temp problems, the Thermo Sensor would make sense. Below is a diagram showing the layout and where the valve is. Before removing or replacing, check all the vacuum lines for leaks. It's possible the components are good but a pinhole in a vacuum line could throw a check engine light. Best of luck.
have check engine light coming - d74df5f.gif

Posted on Jul 26, 2009

  • Greg Margossian
    Greg Margossian Jul 26, 2009

    Checking the vacuum lines for leaks and clogs is still the best place to check out first. If all lines are good, there are 2 temp sensors for the EFI engines, the (IAT) air temp sensor and water temp sensor. The IAT would be the next logical place to investigate.

  • Greg Margossian
    Greg Margossian Aug 01, 2009

    Kindly rate the solution you've been provided if you feel it answered your question. Thank you.


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What does an engine light that flashes seven times and then one means?

If you are retrieving trouble codes, that is code 71-EGR system malfunction. A problem with the EGR valve.

Mar 04, 2014 | 1988 Toyota Pickup

1 Answer

94 toyota 22re misses at idle

think its time to remove the head and renew the gasket ,also remove the valves and renew the seals and gring them in a bit ,maybe even renew the valve springs ,or buy a newer vehicle as its nearly 20 yrs old

Nov 16, 2013 | 1994 Toyota Pickup

2 Answers

Egr valve faults

Yes, you need to reset the codes by disconnecting the battery negative terminal for about 15-20 minutes with the ignition key ON. Turn OFF the key, connect the cable again and turn the key. The CEL will turn off.

May 24, 2013 | Toyota Pickup Cars & Trucks

1 Answer

Check engine light flashes 4-3-7-1 what will be the code number

I would guess 2 codes--43 and 71. 43 says starter signal not reaching ECM. Are you push starting the truck? If not, might be a bad wire from the ignition switch to the computer.
71 is low EGR gas temp. Could be the sensor signal is not reaching the computer but more likely the EGR valve is not opening. May be stuck/clogged, has torn diaphragm, or is not getting vacuum. I believe the vacuum is controlled by a thermal valve. Check to see that the thermal valve is getting vacuum from the intake manifold and opening to deliver vacuum to the EGR valve when the engine reaches operating temp.



Dec 04, 2011 | 1991 Toyota Pickup

1 Answer

94 Toyota 22RE engine. Cold engine starts and

i would check the egr valve sounds like its sticking.

Jan 29, 2010 | 1994 Toyota Pickup

1 Answer

I have a check engine for a 1995 Toyota Corolla- diagnostic code 71...What is it and also what parts do I need? Thanks

EGR system malfunction. Check EGR circuit/switches. Check/replace EGR vacuum hoses. Check/replace EGR Vacuum Modulator. Remove and clean EGR valve. Test EGR valve by applying vacuum to open. If necessary, replace.

Nov 22, 2009 | 1995 Toyota Corolla

1 Answer

1995 Toyota Camry - Code 71 - failed emissions tests

replace the EGR switching valve and have the machanic clear the engine check light. I think it should help

Mar 25, 2009 | 1995 Toyota Camry

1 Answer

1990 22re lopes at idle and sputters

You can remove your Egr system and the engine will run fine. has a kit for this.

Feb 17, 2009 | 1994 Toyota Pickup

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

522 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8195 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides